Paint spray nozzle

Claim 2

A paint spray nozzle, comprising: a body including first and second straight fluid passages extending therethrough for receiving paint and pressurized air, respectively, said fluid passages originating in inlet openings adjacent one end of said body and terminating in exit openings adjacent the other end of said body; means in fluid communication with said first fluid passage for supplying paint to said first fluid passage; means in fluid communication with said second fluid passage for supplying pressurized air to said second fluid passage; and plug means removably secured to said body at said one end and covering said inlet openings, said plug means when removed from said body exposing said passages for cleaning; said plug means including a passage therethrough communicating between one of said passages in said body and the corresponding one of said fluid communication means.

Claim 3

A paint spray nozzle, comprising: a body including first and second straight fluid passages extending therethrough for receiving paint and pressurized air, respectively, each of said fluid passages being tapered from a larger entrance opening adjacent one end of said body to a smaller exit opening adjacent the other end of said body; means in fluid communication with said first fluid passage for supplying paint to said first fluid passage; means in fluid communication with said second fluid passage for supplying pressurized air to said second fluid passage; and plug means removably sealably secured to said body at said one end and covering said passage entrance openings, said plug means when removed from said body exposing said passages for cleaning; said plug means including a passage therethrough communicating between one of said passages in said body and the corresponding one of said fluid communication means.

Claim 4

A paint spray nozzle, comprising: a body including first and second straight fluid passages extending therethrough for receiving paint and pressurized air, respectively, each of said fluid passages being tapered from a larger entrance opening adjacent one end of said body to a smaller exit opening adjacent the other end of said body; means in fluid communication with said first fluid passage for supplying paint to said first fluid passage; means in fluid communication with said second fluid passage for supplying pressurized air to said second fluid passage; and plug means removably sealably secured to said body at said one end and covering said passage entrance openings, said plug means when removed from said body exposing said passages for cleaning; said plug means including a passage therethrough communicating between one of said passages in said body and the corresponding one of said fluid communication means.

Claim 5

A paint spray nozzle operable by pressurized air, comprising: a body including a first fluid passage extending therethrough for receiving paint and a second fluid passage extending therethrough for receiving pressurized air, said fluid passages including separate entrance openings provided on an exterior surface of said body and terminating in exit openings at one end of said body, said body further including an inlet port in fluid communication with said fluid passage for supplying paint to said first fluid passage; a cap mounted on said body adjacent said one end, said cap having a hollow interior to provide a mixing chamber for paint and pressurized air and a spray opening extending therethrough to form a paint spray from paint and pressurized air supplied to said fluid passages; and a plug located at said exterior surface of said body for covering said entrance openings of said fluid passages, said plug including a passageway extending therethrough in fluid communication with said entrance opening of said second fluid passage for receiving pressurized air to be supplied to said second fluid passage.

Claim 6

A paint spray nozzle operable by pressurized air, comprising: a body including a first fluid passage extending therethrough for receiving paint and a second fluid passage extending therethrough for receiving pressurized air, said fluid passages including separate entrance openings provided on an exterior surface of said body and terminating in exit openings at one end of said body, said body further including an inlet port in fluid communication with said fluid passage for supplying paint to said first fluid passage; a cap mounted on said body adjacent said one end, said cap having a hollow interior to provide a mixing chamber for paint and pressurized air and a spray opening extending therethrough to form a paint spray from paint and pressurized air supplied to said fluid passages; and a plug located at said exterior surface of said body for covering said entrance openings of said fluid passages, said plug including a passageway extending therethrough in fluid communication with said entrance opening of said second fluid passage for receiving pressurized air to be supplied to said second fluid passage.

Claim 7

A paint spray nozzle operable by pressurized air, comprising: an elongated body including a first tapered passage extending longitudinally therethrough for receiving paint and a second tapered passage extending longitudinally therethrough for receiving pressurized air, said fluid passages including separate entrance openings formed at a rear end of said body and terminating in exit openings provided at a front end of said body, said body further including an inlet port in fluid communication with said first tapered passage for supplying paint to said first tapered passage; a cap mounted on said front end of said body, said cap having a hollow, cone-shaped interior to provide a mixing chamber for paint and pressurized air and a spray opening extending through said cap to form a paint spray from paint and pressurized air supplied to said first and second tapered passages, respectively; a plug located at said rear end of said body for covering said entrance openings of said first and second tapered passages, said plug including a passageway extending therethrough in fluid communication with said entrance opening of said second tapered passage for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection received in said entrance opening of said first tapered passage to seal said entrance opening and align said plug passageway and said second tapered passage; and means for retaining said plug in engagement with said rear end of said elongated body.

Claim 8

A paint spray nozzle operable by pressurized air, comprising: an elongated body including a first tapered passage extending longitudinally therethrough for receiving paint and a second tapered passage extending longitudinally therethrough for receiving pressurized air, said fluid passages including separate entrance openings formed at a rear end of said body and terminating in exit openings provided at a front end of said body, said body further including an inlet port in fluid communication with said first tapered passage for supplying paint to said first tapered passage; a cap mounted on said front end of said body, said cap having a hollow, cone-shaped interior to provide a mixing chamber for paint and pressurized air and a spray opening extending through said cap to form a paint spray from paint and pressurized air supplied to said first and second tapered passages, respectively; a plug located at said rear end of said body for covering said entrance openings of said first and second tapered passages, said plug including a passageway extending therethrough in fluid communication with said entrance opening of said second tapered passage for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection received in said entrance opening of said first tapered passage to seal said entrance opening and align said plug passageway and said second tapered passage; and means for retaining said plug in engagement with said rear end of said elongated body.

Claim 9

A nozzle for a paint spray gun operable by pressuized air, comprising: an elongated body having a rear end provided with a recess and a front end which comprises a flat face provided with an extension projecting forward from said face, said body including a first tapered passage extending longitudinally therethrough from said recess through said extension and a second tapered passage extending longitudinally therethrough from said recess to said face, said body further including an inlet port in fluid communication with said first tapered passage for supplying paint to said first tapered passage; a cap mounted on said front end of said body and surrounding said face, said cap being generally cylindrical in shape and including a front end provided with an interior surface which in cooperation with said face and extension of said elongated body provides a mixing chamber for paint and pressurized air and a central opening to form a paint spray from paint and pressurized air supplied to said first and second tapered passages, respectively; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said fluid passages, said plug including a passageway extending therethrough in fluid communication with said second tapered passage for receiving pressuized air to be supplied to said second tapered passage and a plug-like projection extending forwardly from said plug into said first tapered passage to seal said first tapered passage; and means for retaining said plug in said recess at said rear end of said elongated body.

Claim 10

A nozzle for a paint spray gun operable by pressuized air, comprising: an elongated body having a rear end provided with a recess and a front end which comprises a flat face provided with an extension projecting forward from said face, said body including a first tapered passage extending longitudinally therethrough from said recess through said extension and a second tapered passage extending longitudinally therethrough from said recess to said face, said body further including an inlet port in fluid communication with said first tapered passage for supplying paint to said first tapered passage; a cap mounted on said front end of said body and surrounding said face, said cap being generally cylindrical in shape and including a front end provided with an interior surface which in cooperation with said face and extension of said elongated body provides a mixing chamber for paint and pressurized air and a central opening to form a paint spray from paint and pressurized air supplied to said first and second tapered passages, respectively; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said fluid passages, said plug including a passageway extending therethrough in fluid communication with said second tapered passage for receiving pressuized air to be supplied to said second tapered passage and a plug-like projection extending forwardly from said plug into said first tapered passage to seal said first tapered passage; and means for retaining said plug in said recess at said rear end of said elongated body.

Claim 11

A nozzle for a paint spray gun operable by pressuized air, comprising: an elongated body having a rear end provided with a recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including a first tapered passage extending longitudinally therethrough from a first entrance opening in said recess through said cone-shaped extension to a first exit opening in said tip of said cone-shaped extension and a second tapered passage extending longitudinally therethrough from a second entrance opening in said recess to a second exit opening in said face, said elongaged body further including an inlet port extending tranversely therethrough in fluid communication with said first tapered passage for supplying paint to said first tapered passage; a generally cylindrical cap mounted on said front end of said elongated body secure said cap to said body, said cap including a front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressurized air, said front wall of said cap including a central opening in axial alignment with said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressurized air supplied to said first and second tapered passage, respectively; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said entrance openings of said first and second tapered passages, said plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection extending forwardly from said plug into said first entrance opening to seal said first entrance opening; and a plug retainer mounted on said rear end of said elongated body for engaging said plug to retain said plug in said recess at said rear end of said elongated body.

Claim 12

A nozzle for a paint spray gun operable by pressuized air, comprising: an elongated body having a rear end provided with a recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including a first tapered passage extending longitudinally therethrough from a first entrance opening in said recess through said cone-shaped extension to a first exit opening in said tip of said cone-shaped extension and a second tapered passage extending longitudinally therethrough from a second entrance opening in said recess to a second exit opening in said face, said elongaged body further including an inlet port extending tranversely therethrough in fluid communication with said first tapered passage for supplying paint to said first tapered passage; a generally cylindrical cap mounted on said front end of said elongated body secure said cap to said body, said cap including a front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressurized air, said front wall of said cap including a central opening in axial alignment with said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressurized air supplied to said first and second tapered passage, respectively; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said entrance openings of said first and second tapered passages, said plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection extending forwardly from said plug into said first entrance opening to seal said first entrance opening; and a plug retainer mounted on said rear end of said elongated body for engaging said plug to retain said plug in said recess at said rear end of said elongated body.

Claim 13

A nozzle for a paint spray gun operable by pressurized air, comprising: an elongated body haivng a rear end provided with a recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including a first tapered passage extending longitudinally therethrough from a first entrance opening in said recess through said cone-shaped extension to a first exit opening in said tip of said cone-shaped extension and a second tapered passage extending longitudinally therethrough from a second entrance opening in said recess to a second exit opening in said face, said elongated body further including an inlet port extending transversely therethrough in fluid communication with said first tapered passage for supplying paint to said first tapered passage, said elongated body further including external threads provided at its front and rear ends; a generally cylindrical cap including a hollow interior provided with internal threads for engaging said external threads on said front end of said elongated body to secure said cap to said body, said cap including a front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressuized air, said front wall of said cap including a central opening in axial alignment with said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressurized air supplied to said first and second tapered passages, respectively; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said entrance openings of said first and second tapered passages, said plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection extending forwardly from said plug into said first entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said recess at said rear end of said elongated body, said plug retainer being annular in shape and including internal threads for engaging said external threads at said rear end of said elongated body to secure said plug retainer to said body and a rear wall for engaging said plug to retain said plug in engagement with said elongated body.

Claim 14

A nozzle for a paint spray gun operable by pressurized air, comprising: an elongated body haivng a rear end provided with a recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including a first tapered passage extending longitudinally therethrough from a first entrance opening in said recess through said cone-shaped extension to a first exit opening in said tip of said cone-shaped extension and a second tapered passage extending longitudinally therethrough from a second entrance opening in said recess to a second exit opening in said face, said elongated body further including an inlet port extending transversely therethrough in fluid communication with said first tapered passage for supplying paint to said first tapered passage, said elongated body further including external threads provided at its front and rear ends; a generally cylindrical cap including a hollow interior provided with internal threads for engaging said external threads on said front end of said elongated body to secure said cap to said body, said cap including a front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressuized air, said front wall of said cap including a central opening in axial alignment with said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressurized air supplied to said first and second tapered passages, respectively; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said entrance openings of said first and second tapered passages, said plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection extending forwardly from said plug into said first entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said recess at said rear end of said elongated body, said plug retainer being annular in shape and including internal threads for engaging said external threads at said rear end of said elongated body to secure said plug retainer to said body and a rear wall for engaging said plug to retain said plug in engagement with said elongated body.

Claim 15

a nozzle for a paint gun operable by pressurized air, comprising: an elongated body having a rear end provided with a recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including a first tapered passage extending longitudinally therethrough from a first entrance opening in said recess through said cone-shaped extension to a first exit opening in said tip of said cone-shaped extension and a second tapered passage extending longitudinally therethrough from a second entrance opening in said recess to a second exit opening in said face, said elongated body further including a stem projecting laterally therefrom provided with a passageway extending therethrough in fluid communication with said first tapered passage for supplying paint to said first tapered passage, said elongated body further including external threads provided at its front and rear ends; a generally cylindrical cap including a hollow interior provided with internal threads for engaging said external threads at said front end of said elongated body to secure said cap to said elongated body, said cap including a front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressurized air, said front wall of said cap including a central opening in axial alignment with a said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressurized air supplied to said first and second tapered passages, respectively; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said entrance openings of said first and second tapered passages, said plug incuding a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second tapered passage and a plug like projection extending forwardly from said plug into said first entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said recess at said rear end of said elongated body, said plug retainer being annular in shape and including internal threads for engaging said external threads at said rear end of said elongataed body to secure said plug retainer to said body and a rear wall for engaging said plug to retain said plug in engagement with said elongated body.

Claim 16

a nozzle for a paint gun operable by pressurized air, comprising: an elongated body having a rear end provided with a recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including a first tapered passage extending longitudinally therethrough from a first entrance opening in said recess through said cone-shaped extension to a first exit opening in said tip of said cone-shaped extension and a second tapered passage extending longitudinally therethrough from a second entrance opening in said recess to a second exit opening in said face, said elongated body further including a stem projecting laterally therefrom provided with a passageway extending therethrough in fluid communication with said first tapered passage for supplying paint to said first tapered passage, said elongated body further including external threads provided at its front and rear ends; a generally cylindrical cap including a hollow interior provided with internal threads for engaging said external threads at said front end of said elongated body to secure said cap to said elongated body, said cap including a front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressurized air, said front wall of said cap including a central opening in axial alignment with a said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressurized air supplied to said first and second tapered passages, respectively; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said entrance openings of said first and second tapered passages, said plug incuding a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second tapered passage and a plug like projection extending forwardly from said plug into said first entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said recess at said rear end of said elongated body, said plug retainer being annular in shape and including internal threads for engaging said external threads at said rear end of said elongataed body to secure said plug retainer to said body and a rear wall for engaging said plug to retain said plug in engagement with said elongated body.

Claim 17

A nozzle for a paint spray gun operable by pressurized air, comprising: an elongated body having a rear end provided with a key-shaped recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including first and second fluid passages extending longitudinally therethrough for receiving paint and pressurized air, respectively, said first fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening at said tip of said cone-shaped extension, said second fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening in said face, said elongated body further including an inlet port extending transversely therethroough in fluid communication with said first fluid passage for supplying paint to said first fluid passage, said elongated body further including external threads provided at its front and rear ends; a generally cylindrical cap including a hollow interior provided with internal threads for engaging said external threads at said front end of said body to secure said cap to elongated body, said cap including a conical front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressurized air, said conical front wall including a central opening in axial alignment with said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressuized air supplied to said first and second fluid passages, respectively; a removable plug incluidng a key-shaped front face adapted to be received in said key-shaped recess for covering said entrance openings of said first and second fluid passages, said plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second fluid passage and a plug-like projection extending forwardly from said front face into said first entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said key-shaped recess, said plug retainer being annular in shape and including internal threads for engaging said external thread at said rear end of said elongated body to secure said plug retainer to said elongated body and a rear wall for engaging said plug to retain said plug in engagment with said elongated body.

Claim 18

A nozzle for a paint spray gun operable by pressurized air, comprising: an elongated body having a rear end provided with a key-shaped recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including first and second fluid passages extending longitudinally therethrough for receiving paint and pressurized air, respectively, said first fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening at said tip of said cone-shaped extension, said second fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening in said face, said elongated body further including an inlet port extending transversely therethroough in fluid communication with said first fluid passage for supplying paint to said first fluid passage, said elongated body further including external threads provided at its front and rear ends; a generally cylindrical cap including a hollow interior provided with internal threads for engaging said external threads at said front end of said body to secure said cap to elongated body, said cap including a conical front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressurized air, said conical front wall including a central opening in axial alignment with said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressuized air supplied to said first and second fluid passages, respectively; a removable plug incluidng a key-shaped front face adapted to be received in said key-shaped recess for covering said entrance openings of said first and second fluid passages, said plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second fluid passage and a plug-like projection extending forwardly from said front face into said first entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said key-shaped recess, said plug retainer being annular in shape and including internal threads for engaging said external thread at said rear end of said elongated body to secure said plug retainer to said elongated body and a rear wall for engaging said plug to retain said plug in engagment with said elongated body.

Claim 19

A nozzle for a paint spray gun operable by pressurized air, comprising: an elongated body having a rear end provided with a key-shaped recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including first and second fluid passages extending longitudinally therethrough for receiving paint and pressurized air, respectively, said first fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening at said tip of said cone-shaped extension, said second fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening in said face, said elongated body further including an inlet port extending transversely therethrough in fluid communication with said first fluid passage for supplying paint to said first fluid passage, said elongated body further including external threads provided at its front and rear ends; a generally cylindrical cap including a hollow interior provided with internal threads for engaging said external threads at said front end of said elongated body to secure said cap to said elongated body, said cap including a conical front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressurized air, said conical front wall includilng a central opening in axial alignment with said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressurized air supplied to said first and second fluid passages, respectively; a removable plug including a key-shaped front face adapted to be received in said key-shaped recess for covering said entrance openings of said first and second fluid passages, said plug including a rearwardly projecting inlet member having a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second fluid passage and a plug-like projection extending forwardly from said front face into said entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said key-shaped recess, said plug retainer being annular in shape and including internal threads for engaging said external thread at said rear end of said elongated body to secure said plug retainer to said elongated body and a rear wall for engaging said plug to retain said plug in engagement with said elongated body, said rear wall including an opening to permit said inlet member of said plug to extend therethrough.

Claim 20

A nozzle for a paint spray gun operable by pressurized air, comprising: an elongated body having a rear end provided with a key-shaped recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including first and second fluid passages extending longitudinally therethrough for receiving paint and pressurized air, respectively, said first fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening at said tip of said cone-shaped extension, said second fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening in said face, said elongated body further including an inlet port extending transversely therethrough in fluid communication with said first fluid passage for supplying paint to said first fluid passage, said elongated body further including external threads provided at its front and rear ends; a generally cylindrical cap including a hollow interior provided with internal threads for engaging said external threads at said front end of said elongated body to secure said cap to said elongated body, said cap including a conical front wall provided with a cone-shaped interior surface which in cooperation with said face and cone-shaped extension of said elongated body provides a mixing chamber for paint and pressurized air, said conical front wall includilng a central opening in axial alignment with said first exit opening in said tip of said cone-shaped extension to form a paint spray from paint and pressurized air supplied to said first and second fluid passages, respectively; a removable plug including a key-shaped front face adapted to be received in said key-shaped recess for covering said entrance openings of said first and second fluid passages, said plug including a rearwardly projecting inlet member having a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second fluid passage and a plug-like projection extending forwardly from said front face into said entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said key-shaped recess, said plug retainer being annular in shape and including internal threads for engaging said external thread at said rear end of said elongated body to secure said plug retainer to said elongated body and a rear wall for engaging said plug to retain said plug in engagement with said elongated body, said rear wall including an opening to permit said inlet member of said plug to extend therethrough.

Claim 21

A paint spray gun operable by pressuized air, comprising: an elongated body including a first tapered passage extending longitudinally therethrough for receiving paint and a second tapered passage extending longitudinally therethrough for receiving pressuized air, said fluid passages including a separate entrance openings formed at a rear end of said body and terminating in exit openings provided at a front end of said body, said body further including an inlet port in fluid communication with said first tapered passage for supplying paint to said first tapered passage; a plug located at said rear end of said body for covering said entrance openings of said first and second tapered passages, said plug including a passageway extending therethrough in fluid communication with said entrance opening of said second tapered passage for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection received in said entrance opening of said first tapered passage to seal said entrance opening; and means for retaining said plug in engagement with said rear end of said elongated body.

Claim 22

A paint spray gun operable by pressuized air, comprising: an elongated body including a first tapered passage extending longitudinally therethrough for receiving paint and a second tapered passage extending longitudinally therethrough for receiving pressuized air, said fluid passages including a separate entrance openings formed at a rear end of said body and terminating in exit openings provided at a front end of said body, said body further including an inlet port in fluid communication with said first tapered passage for supplying paint to said first tapered passage; a plug located at said rear end of said body for covering said entrance openings of said first and second tapered passages, said plug including a passageway extending therethrough in fluid communication with said entrance opening of said second tapered passage for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection received in said entrance opening of said first tapered passage to seal said entrance opening; and means for retaining said plug in engagement with said rear end of said elongated body.

Claim 23

A nozzle for a paint spray gun operable by pressuized air, comprising: an elongated body having a rear end provided with a recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including a first tapered passage extending longitudinally therethrough from a first entrance opening in said recess through said cone-shaped extension to a first exit opening in said tip of said cone-shaped extension and a second tapered passage extending longitudinally therethrough from a second entrance opening in said recess to a second exit opening in said face, said elongated body further including an inlet port extending tranversely therethrough in fluid communication with said first tapered passage for supplying paint to said first tapered passage, said elongated body further including external threads provided at its rear end; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said entrance openings of said first and second tapered passages, siad plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection extending forwardly from said plug into said first entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said recess at said rear end of said elongated body, said plug retainer being annular in shape and including internal threads for engaging said external threads at said rear end of said elongated body to secure said plug retainer to said body and a rear wall for engaging said plug to retain said plug in engagment with said elongated body.

Claim 24

A nozzle for a paint spray gun operable by pressuized air, comprising: an elongated body having a rear end provided with a recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including a first tapered passage extending longitudinally therethrough from a first entrance opening in said recess through said cone-shaped extension to a first exit opening in said tip of said cone-shaped extension and a second tapered passage extending longitudinally therethrough from a second entrance opening in said recess to a second exit opening in said face, said elongated body further including an inlet port extending tranversely therethrough in fluid communication with said first tapered passage for supplying paint to said first tapered passage, said elongated body further including external threads provided at its rear end; a removable plug adapted to be received in said recess provided in said rear end of said elongated body for covering said entrance openings of said first and second tapered passages, siad plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second tapered passage and a plug-like projection extending forwardly from said plug into said first entrance opening to seal said first entrance opening; and a plug retainer for retaining said plug in said recess at said rear end of said elongated body, said plug retainer being annular in shape and including internal threads for engaging said external threads at said rear end of said elongated body to secure said plug retainer to said body and a rear wall for engaging said plug to retain said plug in engagment with said elongated body.

Claim 25

A nozzle for a paint spray gun operably by pressuized air, comprising: an elongated body having a rear end provided with a key-shaped recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including first and second fluid passages extending longitudinally therethrough for receiving paint and pressurized air, respectively, said first fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening at said tip of said cone-shaped extension, said second fluid passages being tapered from a larger entrance opening in said recess to a smaller exit opening in said face, said body further including an inlet port extending transversely therethrough in fluid communication with said first passage for supplying paint to said first fluid passage, said elongated body further including external threads provided at its front and rear ends; a removable plug including a key-shaped front face adapted to be non-rotatably received in said key-shaped recess for covering said entrance openings of said first and second fluid passages, said plug having a front face sealingly engaging a face on said body, said plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second fluid passage and a plug-like projection extending forwardly from said front face into said first entrancce opening to seal said first entrance opening; and a plug retainer for retaining said plug in said key-shaped recess, said plug retainer being annular in shape and including internal threads for engaging said external thread at said rear end of said elongated body to sealingly secure said plug retainer to said elongated body and a rear wall for engaging said plug to retain said plug in engagment with said elongated body.

Claim 26

A nozzle for a paint spray gun operably by pressuized air, comprising: an elongated body having a rear end provided with a key-shaped recess and a front end which comprises a flat, circular face provided with a cone-shaped extension centrally located on said face including a tip projecting forward from said face, said elongated body including first and second fluid passages extending longitudinally therethrough for receiving paint and pressurized air, respectively, said first fluid passage being tapered from a larger entrance opening in said recess to a smaller exit opening at said tip of said cone-shaped extension, said second fluid passages being tapered from a larger entrance opening in said recess to a smaller exit opening in said face, said body further including an inlet port extending transversely therethrough in fluid communication with said first passage for supplying paint to said first fluid passage, said elongated body further including external threads provided at its front and rear ends; a removable plug including a key-shaped front face adapted to be non-rotatably received in said key-shaped recess for covering said entrance openings of said first and second fluid passages, said plug having a front face sealingly engaging a face on said body, said plug including a passageway extending therethrough in fluid communication with said second entrance opening for receiving pressurized air to be supplied to said second fluid passage and a plug-like projection extending forwardly from said front face into said first entrancce opening to seal said first entrance opening; and a plug retainer for retaining said plug in said key-shaped recess, said plug retainer being annular in shape and including internal threads for engaging said external thread at said rear end of said elongated body to sealingly secure said plug retainer to said elongated body and a rear wall for engaging said plug to retain said plug in engagment with said elongated body.