US3385522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device for liquid pressure regulating apparatus
Assignee: DeVilbiss Co
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Filing: 1966-05-20
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Granted: 1968-05-28
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Expires: 1986-05-20
Abstract
No abstract record available.
Inventors
- 👤 Kock Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/24; B05B7/2489; B05B7/2494; B05B12/00; B05B12/02; B05B12/04; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
AN APPARATUS FOR CONTROLLING THE LIQUID PRESSURE APPLIED TO A SPRAY GUN COMPRISING, IN COMBINATION, A SOURCE OF LIQUID UNDER PRESSURE IN EXCESS OF THAT DESIRED FOR NORMAL SPRAYING, A PRESSURE REGULATOR INTERPOSED BETWEEN SAID SOURCE AND THE SPRAY GUN, SAID PRESSURE REGULATOR HAVING A FIRST LIQUID EXIT CONNECTED TO SAID SPRAY GUN FOR DISCHARGE OF LIQUID UNDER REGULATED PRESSURE AND A SECOND NORMALLY CLOSED LIQUID EXIT SEPARATED BY A PRESSURE REDUCING VALVE FROM SAID FIRST LIQUID EXIT, AND MEANS TO OPEN SAID NORMALLY CLOSED SECOND LIQUID EXIT TO CAUSE A RELATIVELY RAPID FLOW OF LIQUID FROM SAID SOURCE THROUGH SAID PRESSURE REGULATOR AND DIRECTLY OUT OF SAID SECOND LIQUID EXIT VALVE AT SAID HIGHER THAN SAID NORMAL SPRAYING PRESSURE TO PURGE SAID REGULATOR OF SOLIDS DEPOSITED DURING NORMAL SPRAYING.
Claim 2
Independent Claim
130 words
AN APPARATUS FOR CONTROLLING THE LIQUID PRESSURE APPLIED TO A SPRAY GUN COMPRISING, IN COMBINATION, A SOURCE OF LIQUID UNDER PRESSURE IN EXCESS OF THAT DESIRED FOR NORMAL SPRAYING, A PRESSURE REGULATOR INTERPOSED BETWEEN SAID SOURCE AND THE SPRAY GUN, SAID PRESSURE REGULATOR HAVING A FIRST LIQUID EXIT CONNECTED TO SAID SPRAY GUN FOR DISCHARGE OF LIQUID UNDER REGULATED PRESSURE AND A SECOND NORMALLY CLOSED LIQUID EXIT SEPARATED BY A PRESSURE REDUCING VALVE FROM SAID FIRST LIQUID EXIT, AND MEANS TO OPEN SAID NORMALLY CLOSED SECOND LIQUID EXIT TO CAUSE A RELATIVELY RAPID FLOW OF LIQUID FROM SAID SOURCE THROUGH SAID PRESSURE REGULATOR AND DIRECTLY OUT OF SAID SECOND LIQUID EXIT VALVE AT SAID HIGHER THAN SAID NORMAL SPRAYING PRESSURE TO PURGE SAID REGULATOR OF SOLIDS DEPOSITED DURING NORMAL SPRAYING.
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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |