US3637136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray gun system for slurry
Assignee: EPEC SYSTEMS CORP
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Filing: 1970-03-11
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Granted: 1972-01-25
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Expires: 1990-03-11
Abstract
Abstract A spray gun for liquid slurry of the type using atomized air as the propellant medium, particularly a four-way valve system for said gun enabling selective spray of solvent or slurry while continuously flowing solvent and slurry through closed circulation systems. The continuous flowing of solvent through the gun and absent the slurry enables a clean flushing of the gun and eliminates slurry buildup in the gun inner chambers and nozzle.
Inventors
- 👤 Hendrik F Bok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:08
CPC Classifications
B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/0403; B05B13/00; B05B13/02; B05B13/04; B05B13/0447; B05B14/00; B05B14/40; B05B14/46; B05B15/00; B05B15/20; B05B15/25; B05B15/50; B05B15/55; B05B13/0405; B05B13/041; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4259; Y10T137/8593; Y10T137/85954; Y10T137/87265; Y10T137/87338
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
A spray gun system for air-pressurized spraying of slurry comprising: A. a source of slurry and a continuous slurry circulation conduit for said slurry; B. a spray gun with discharge nozzle mounted in said circulation conduit and having: i. a slurry/solvent selector valve communicant with said circulation conduit; ii. an air atomization conduit communicant with said nozzle in said spray gun; C. a source of solvent having: i. a continuous solvent circulation conduit for said solvent communicant with said selector valve and; D. means driving said selector valve to ''''off'''' and ''''on'''' positions, said ''''on'''' position charging said gun through said circulation conduit with liquid slurry and solvent.
Claim 2
Dependent Claim
108 words
A spray gun system for air-pressurized spraying of slurry comprising: A. a source of slurry and a continuous slurry circulation conduit for said slurry; B. a spray gun with discharge nozzle mounted in said circulation conduit and having: i. a slurry/solvent selector valve communicant with said circulation conduit; ii. an air atomization conduit communicant with said nozzle in said spray gun; C. a source of solvent having: i. a continuous solvent circulation conduit for said solvent communicant with said selector valve and; D. means driving said selector valve to ''''off'''' and ''''on'''' positions, said ''''on'''' position charging said gun through said circulation conduit with liquid slurry and solvent.
Claim 3
Dependent Claim
19 words
A spray gun circulation system as in claim 1, said solvent circulation conduit including a solenoid solvent ''''off'''' valve.
Claim 4
Dependent Claim
24 words
A spray gun system for slurry as in claim 1, said spray gun having a double-stacked four-way valve for interconnection with solvent/slurry conduits selectively.
Claim 5
Dependent Claim
27 words
A spray gun system for slurry as in claim 3, said four-way valve being operable to a no-spray ''''off'''' position, while circulating solvent through said spray gun.
Claim 6
Dependent Claim
36 words
A spray gun system for solvent as in claim 4, said four-way valve in no-spray ''''off'''' position admitting continuous flow of slurry through a portion of said solvent conduit and back into said source of slurry.
Claim 7
Dependent Claim
44 words
A spray gun system for slurry as in claim 5, said valve in solvent spray position permitting a continuous flow of solvent through said gun and back into said source of solvent, while continuously circulating slurry through a portion of said slurry circulation conduit.
Claim 8
Dependent Claim
18 words
A spray gun system for slurry as in claim 6, including means agitating said source of slurry continuously.
Claim 9
Dependent Claim
25 words
A spray gun system for slurry as in claim 7, including independent pump means positioned in said solvent circulation conduit and said slurry circulation conduit.
Claim 10
Dependent Claim
36 words
A spray gun system for slurry as in claim 4, said four-way valve being capable of permitting spraying of solvent only through said gun, as slurry is circulated through a portion of said slurry circulation conduit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |