Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
144 words
In an aerosol propellant device for cleaning waste blockages in conduits by a hydraulic ram effect, said device comprising an aerosol, propellant containing container having an inverted vertical action valve assembly including a valve stem controlling a valve for delivery of propellant from said container, means biasing said valve stem to the closed position wherein no propellant is discharged, a nozzle movably mounted on said container for selective movement to actuate said valve by movement of said valve stem in opposition to said means biasing said valve stem, and spring means intermediate said nozzle and said container for biasing said nozzle in the direction of said means biasing said valve stem, and wherein said spring means comprises a curved disc spring defining an outer circumference for abutting said container, said disc spring further having a substantially regressive load/deflection curve in a working deflection range.
Claim 2
Dependent Claim
144 words
In an aerosol propellant device for cleaning waste blockages in conduits by a hydraulic ram effect, said device comprising an aerosol, propellant containing container having an inverted vertical action valve assembly including a valve stem controlling a valve for delivery of propellant from said container, means biasing said valve stem to the closed position wherein no propellant is discharged, a nozzle movably mounted on said container for selective movement to actuate said valve by movement of said valve stem in opposition to said means biasing said valve stem, and spring means intermediate said nozzle and said container for biasing said nozzle in the direction of said means biasing said valve stem, and wherein said spring means comprises a curved disc spring defining an outer circumference for abutting said container, said disc spring further having a substantially regressive load/deflection curve in a working deflection range.
Claim 3
Dependent Claim
19 words
The invention of claim 1 wherein said nozzle has means thereon for sealingly engaging an opening of said conduit.
Claim 4
Dependent Claim
20 words
The invention of claim 2 wherein said means for sealingly engaging said conduit comprises a curved surface on said nozzle.
Claim 5
Dependent Claim
18 words
The invention of claim 1 further including a diffuser means on said nozzle for diffusing propellant discharged therethrough.
Claim 6
Dependent Claim
49 words
The invention of claim 4 wherein said diffuser means comprises a generally frustoconical, hollow body having smaller and larger diameter ends with openings therein, said small diameter end being fitted on said nozzle, and said large diameter end being adapted for sealing against a surface surrounding said conduit opening.
Claim 7
Dependent Claim
18 words
The invention of claim 5 wherein said body defines curved sidewalls intermediate said smaller and larger diameter openings.
Claim 8
Dependent Claim
26 words
The invention of claim 1 wherein said nozzle has a centrally disposed passage therethrough including a generally cylindrical portion leading into a generally frustoconical diffuser portion.
Claim 9
Dependent Claim
15 words
The invention of claim 7 further including at least one groove in said diffuser portion.
Claim 10
Dependent Claim
22 words
The invention of claim 1 further including at least one groove in said outer circumference to permit the escape of trapped propellant.
Claim 11
Dependent Claim
30 words
The invention of claim 9 further including a plurality of projection means extending from said outer circumference for gripping said container, whereby said disc spring is retained on said container.
Claim 12
Dependent Claim
45 words
The invention of claim 1 wherein said nozzle comprises a generally hollow body having a centrally disposed discharge passage therein and a generally cylindrical projection surrounding said discharge passage, said disc spring including a centrally disposed, raised annulus thereon closely surrounding said generally cylindrical projection.
Claim 13
Dependent Claim
74 words
The invention of claim 11 wherein said container includes a generally circular chime defining a first diameter therearound, said nozzle further including an annular skirt defining a second interior diameter greater than said first diameter surface, and further including an interior annular rib on said interior diameter surface of a third diameter less than said first diameter, whereby said nozzle is retained on said container while allowing movement thereof to actuate said valve assembly.