Airless spray gun

Claim 2

An airless spray gun comprising, a gun body, a valve means on said gun body for controlling the flow of spray fluid, a trigger pivotally secured to said gun body and being operatively connected to said valve means for controlling said valve means, said trigger being movable from a first position wherein said valve means is closed to a second position wherein said valve means is open, and a lock means on said gun body, said lock means comprising a first member operatively connected to said trigger for movement therewith and being slidably mounted in said gun body, a second member rotatably mounted in said gun body having one end thereof adjacent one end of said first member, said second member being fixed against axial movement, and cooperating means on the adjacent ends of said first and second members which permits said first member to be slidably moved so that said trigger can be moved to its second position when said second member has been rotated to a first predetermined position with respect to said gun body and said first member, said cooperating means preventing the slidable movement of said first member to prevent the movement of said trigger to said second position when said second member has been rotated to a second predetermined position, said cooperating means comprising a stop element extending from said one end of said second member towards said one end of said first member, said first member having a portion of its said one end cut-away so that said stop element may be received thereby when said second element has been rotated to its said first position, said stop element being an elongated pin means which is adapted to engage the said one end of said first member to limit the slidable movement of said first member towards said second member when said second member is in said second position.

Claim 3

An airless spray gun comprising, a gun body, a valve means on said gun body for controlling the flow of spray fluid, a trigger pivotally secured to said gun body and being operatively connected to said valve means for controlling said valve means, said trigger being movable from a first position wherein said valve means is closed to a second position wherein said valve means is open, and a lock means on said gun body, said lock means comprising a first member operatively connected to said trigger for movement therewith and being slidably mounted in said gun body, a second member rotatably mounted in said gun body having one end thereof adjacent one end of said first member, said second member being fixed against axial movement, and cooperating means on the adjacent ends of said first and second members which permits said first member to be slidably moved so that said trigger can be moved to its second position when said second member has been rotated to a first predetermined position with respect to said gun body and said first member, said cooperating means preventing the slidable movement of said first member to pRevent the movement of said trigger to said second position when said second member has been rotated to a second predetermined position, said cooperating means comprising a stop element extending from said one end of said second member towards said one end of said first member, said first member having a portion of its said one end cut-away so that said stop element may be received thereby when said second element has been rotated to its said first position, said first member being a substantially cylindrical shaped member having a top and a bottom, and opposite sides, said cut-away portion extending forwardly into said one end of said first member, said first member having a substantially inverted U-shaped channel formed therein intermediate its length extending upwardly thereinto from said bottom, a locating pin means extending through said gun body and through said U-shaped channel to limit the longitudinal movement of said first member, said U-shaped channel communicating with said cut-away portion so that said first member may be selectively rotated a predetermined amount to permit said first member to be slidably moved forwardly, for removal from the gun body, without removing said locating pin from said gun body.

Claim 4

An airless spray gun comprising, a gun body, a valve means on said gun body for controlling the flow of spray fluid, a trigger pivotally secured to said gun body and being operatively connected to said valve means for controlling said valve means, said trigger being movable from a first position wherein said valve means is closed to a second position wherein said valve means is open, and a lock means on said gun body, said lock means comprising a first member operatively connected to said trigger for movement therewith and being slidably mounted in said gun body, a second member rotatably mounted in said gun body having one end thereof adjacent one end of said first member, said second member being fixed against axial movement, and cooperating means on the adjacent ends of said first and second members which permits said first member to be slidably moved so that said trigger can be moved to its second position when said second member has been rotated to a first predetermined position with respect to said gun body and said first member, said cooperating means preventing the slidable movement of said first member to pRevent the movement of said trigger to said second position when said second member has been rotated to a second predetermined position, said cooperating means comprising a stop element extending from said one end of said second member towards said one end of said first member, said first member having a portion of its said one end cut-away so that said stop element may be received thereby when said second element has been rotated to its said first position, said first member being a substantially cylindrical shaped member having a top and a bottom, and opposite sides, said cut-away portion extending forwardly into said one end of said first member, said first member having a substantially inverted U-shaped channel formed therein intermediate its length extending upwardly thereinto from said bottom, a locating pin means extending through said gun body and through said U-shaped channel to limit the longitudinal movement of said first member, said U-shaped channel communicating with said cut-away portion so that said first member may be selectively rotated a predetermined amount to permit said first member to be slidably moved forwardly, for removal from the gun body, without removing said locating pin from said gun body.

Claim 5

The airless spray gun of claim 2 wherein the intersection of said cut-away portion and said channel is ''''flat'''' to permit the said rotation of said first member.

Claim 6

An airless spray gun comprising, a gun body, a valve means on said gun body for controlling the flow of spray fluid, valve trigger pivotally secured to said gun body and being operatively connected to said valve means for controlling said vlave means, said trigger being movable from a first position wherein said valve means is closed to a second position wherein said valve means is open, and a lock means on said gun body, said lock means comprising a first member operatively connected to said trigger for movement therewith and being slidably mounted in said gun body, a second member rotatably mounted in said gun body having one end thereof adjacent one end of said first member, said second member being fixed against axial movement, and cooperating means on the adjacent ends of said first and second members which permits said first member to be slidably moved so that said trigger can be moved to its second position when said second member has been rotated to a first predetermined position with respect to said gun body and said first member, said cooperating means preventing the slidable movement of said first member to prevent the movement of said trigger to said second position when said second member has been rotated to a second predetermined position, a tensioning spring extending between said first and second members which yieldably urges said trigger to its said first position.

Claim 7

An airless spray gun comprising, a gun body, a valve means on said gun body for controlling the flow of spray fluid, valve trigger pivotally secured to said gun body and being operatively connected to said valve means for controlling said vlave means, said trigger being movable from a first position wherein said valve means is closed to a second position wherein said valve means is open, and a lock means on said gun body, said lock means comprising a first member operatively connected to said trigger for movement therewith and being slidably mounted in said gun body, a second member rotatably mounted in said gun body having one end thereof adjacent one end of said first member, said second member being fixed against axial movement, and cooperating means on the adjacent ends of said first and second members which permits said first member to be slidably moved so that said trigger can be moved to its second position when said second member has been rotated to a first predetermined position with respect to said gun body and said first member, said cooperating means preventing the slidable movement of said first member to prevent the movement of said trigger to said second position when said second member has been rotated to a second predetermined position, a tensioning spring extending between said first and second members which yieldably urges said trigger to its said first position.

Claim 8

The airless spray gun of claim 4 wherein said second member has a rearward end and wherein a tension cap means threadably extends into the rearward end of said second member for engagement with one end of said tensioning spring to permit the selective tensioning of said spring.

Claim 9

An airless spray gun comprising, a gun body, a valve means on said gun body for controlling the flow of spray fluid, a trigger pivotally secured to said gun body and being operatively connected to said valve means for controlling said valve means, said trigger being movable from a first position wherein said valve means is closed to a second position wherein said valve means is open, and a lock means on said gun body, said lock means comprising a first member operatively connected to said trigger for movement therewith and being slidably mounted in said gun body, a second member rotatably mounted in said gun body having one end thereof adjacent one end of said first member, said second member being fixed against axial movement, and cooperating means on the adjacent ends of said first and second members which permits said first member to be slidably moved so that said trigger can be moved to its second position when said second member has been rotated to a first predetermined position with respect to said gun body and said first member, said cooperating means preventing the slidable movement of said first member to prevent the movement of said trigger to said second position when said second member has been rotated to a second predetermined position, first and second aligned bores formed therein, said lock means being positioned in said first bore, said valve means being mounted in a manifold means having one end thereof positioned in said second bore, said trigger being positioned between said first and second bores.

Claim 10

An airless spray gun comprising, a gun body, a valve means on said gun body for controlling the flow of spray fluid, a trigger pivotally secured to said gun body and being operatively connected to said valve means for controlling said valve means, said trigger being movable from a first position wherein said valve means is closed to a second position wherein said valve means is open, and a lock means on said gun body, said lock means comprising a first member operatively connected to said trigger for movement therewith and being slidably mounted in said gun body, a second member rotatably mounted in said gun body having one end thereof adjacent one end of said first member, said second member being fixed against axial movement, and cooperating means on the adjacent ends of said first and second members which permits said first member to be slidably moved so that said trigger can be moved to its second position when said second member has been rotated to a first predetermined position with respect to said gun body and said first member, said cooperating means preventing the slidable movement of said first member to prevent the movement of said trigger to said second position when said second member has been rotated to a second predetermined position, first and second aligned bores formed therein, said lock means being positioned in said first bore, said valve means being mounted in a manifold means having one end thereof positioned in said second bore, said trigger being positioned between said first and second bores.