Patent US3733916A successfully refreshed from Google Patents.
Patent US3904431A successfully refreshed from Google Patents.
US3904431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray-gun cleaners
Assignee: Individual
•
Filing: 1974-08-08
•
Granted: 1975-09-09
•
Expires: 1994-08-08
Abstract
Abstract An arrangement for cleaning paint spray-guns by use of a small tank or vat with a confining hood at its top which is divided into a plurality of laterally disposed compartments by means of vertical partitions which extend downwardly from the top of the tank into a body of liquid chemical solvent or thinner, which floats above a body of water at the bottom of the tank. The partitions extend through the body of solvent and partially into the mass of water. A horizontal cover or shelf at the top of the tank separates the main portions of the hood compartments therefrom, leaving a communicating passage between each tank and hood compartment at the rear end of the latter. An opening in the shelf at the front thereof in each compartment permits an operator to insert the suction tube of the spray-gun into successive compartments for scavenging the spray-gun with successively cleaner masses of solvent as the gun is directed towards the rear of the hood, without discharging the paint impurities and thinner into the atmosphere. The impurities drop to the bottom of the tank into the body of water, for periodic removal, with or without the cleaning solvent.
Inventors
- 👤 David Dinerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:17
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/006; B05; B05B; B05B15/00; B05B15/50; B05B15/55
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
255 words
AN APPARATUS FOR CLEANING PAINT-SPRAY GUNS, COMPRISING A. A TANK ADAPTED TO BE SUPPORTED ON A BENCH OR FRAME AND CONSTITUTED ESSENTIALLY BY A CLOSED CONTAINER FOR RECEIVING A BODY OF WATER IN THE LOWER PORTION THEREOF WITH A SUPERNATANT LAYER OF LIQUID CHEMICAL SOLVENT IN THE UPPER PORTION THEREOF, B. AN ENCLOSING HOOD ACROSS THE TOP OF THE TANK WHICH IS OPEN AT THE FRONT AND CLOSED AT TE REAR WHEREAT IT MERGES WITH SAID CONTAINER, C. COVERING MEANS AT THE UPPER PORTION OF THE TANK ABOVE THE LEVEL OF THE LIQUID SOLVENT HAVING OPENINGS ADJACENT TO THE FRONT EDGE AT THE OPEN END OF SAID HOOD, SAID COVERING MEANS TERMINATING SHORT OF THE REAR OF THE HOOD AND TANK TO PROVIDE A PASSAGE THEREBETWEEN D. AT LEAST ONE VERTICAL PARTITION EXTENDING FROM THE FRONT TO THE BACK OF SAID TANK SUBSTANTIALLY FROM THE TOP TO A POINT ABOVE THE BOTTOM THEREOF, AND BELOW THE INTERFACE BETWEEN THE WATER AND SUPERNATANT CHEMICAL SOLVENT, TO DIVIDE THE TANK INTO A PLURALITY OF COMPARTMENTS WITH ONE OF SAID OPENINGS IN EACH COMPARTMENT, E. SAID OPENINGS IN SAID COVERING MEANS ADAPTED TO RECEIVE SUCCESSIVELY THE SUCTION SUPPLY TUBE OF A SPRAY GUN FOR PENETRATION INTO SAID BODY OF SOLVENT TO ENABLE THE SPRAYING OF THE RESIDUAL PAINT IN THE GUN INTO THE COMPARTMENT PORTIONS OF THE HOOD WITH PROGRESSIVELY CLEANER BODIES OF THE SOLVENT, WHICH FALL THROUGH SAID PASAGE WHILE THE PAINT PARTICLESSETTLE IN THE BOTTOM OF SAID TANK IN THE BODY OF WATER, FOR EVENTUAL REMOVAL.
Claim 2
Independent Claim
255 words
AN APPARATUS FOR CLEANING PAINT-SPRAY GUNS, COMPRISING A. A TANK ADAPTED TO BE SUPPORTED ON A BENCH OR FRAME AND CONSTITUTED ESSENTIALLY BY A CLOSED CONTAINER FOR RECEIVING A BODY OF WATER IN THE LOWER PORTION THEREOF WITH A SUPERNATANT LAYER OF LIQUID CHEMICAL SOLVENT IN THE UPPER PORTION THEREOF, B. AN ENCLOSING HOOD ACROSS THE TOP OF THE TANK WHICH IS OPEN AT THE FRONT AND CLOSED AT TE REAR WHEREAT IT MERGES WITH SAID CONTAINER, C. COVERING MEANS AT THE UPPER PORTION OF THE TANK ABOVE THE LEVEL OF THE LIQUID SOLVENT HAVING OPENINGS ADJACENT TO THE FRONT EDGE AT THE OPEN END OF SAID HOOD, SAID COVERING MEANS TERMINATING SHORT OF THE REAR OF THE HOOD AND TANK TO PROVIDE A PASSAGE THEREBETWEEN D. AT LEAST ONE VERTICAL PARTITION EXTENDING FROM THE FRONT TO THE BACK OF SAID TANK SUBSTANTIALLY FROM THE TOP TO A POINT ABOVE THE BOTTOM THEREOF, AND BELOW THE INTERFACE BETWEEN THE WATER AND SUPERNATANT CHEMICAL SOLVENT, TO DIVIDE THE TANK INTO A PLURALITY OF COMPARTMENTS WITH ONE OF SAID OPENINGS IN EACH COMPARTMENT, E. SAID OPENINGS IN SAID COVERING MEANS ADAPTED TO RECEIVE SUCCESSIVELY THE SUCTION SUPPLY TUBE OF A SPRAY GUN FOR PENETRATION INTO SAID BODY OF SOLVENT TO ENABLE THE SPRAYING OF THE RESIDUAL PAINT IN THE GUN INTO THE COMPARTMENT PORTIONS OF THE HOOD WITH PROGRESSIVELY CLEANER BODIES OF THE SOLVENT, WHICH FALL THROUGH SAID PASAGE WHILE THE PAINT PARTICLESSETTLE IN THE BOTTOM OF SAID TANK IN THE BODY OF WATER, FOR EVENTUAL REMOVAL.
Claim 3
Dependent Claim
32 words
An apparatus as set forth in claim 1, wherein the hood at the top of the container above the passage therebetween is curved concavely to direct the paint impurities and thinner downwardly.
Claim 4
Dependent Claim
20 words
An apparatus as set forth in claim 2, provided with two vertical partitions to divide the tank into three compartments.
Claim 5
Dependent Claim
32 words
An apparatus as set forth in claim 3, wherein the vertical partitions are spaced equidistantly with respect to the ends of the tank to divide the tank into compartments of equal volume.
Claim 6
Dependent Claim
21 words
An apparatus as set forth in claim 1, wherein the vertical partition in the tank extends upwardly into the enclosing hood.
References Cited (Backward Citations)
US1979241A
Cited
US2245892A
Cited
US2569125A
Cited
US2745418A
Cited
US2726667A
Cited
US2948285A
Cited
US3691577A
Cited
US3771539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |