Patent US3279484A successfully refreshed from Google Patents.
US3279484A
Expired / Lapsed
US
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Pressure control system
Assignee: Ross Operating Valve Co
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Filing: 1963-04-03
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Granted: 1966-10-18
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Expires: 1983-04-03
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Brinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:17
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/14; B25B23/145; F; F15; F15B; F15B11/00; F15B11/02; F15B11/022; F15B2211/00; F15B2211/20; F15B2211/25; F15B2211/251; F15B2211/252; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/31; F15B2211/3105; F15B2211/3111; F15B2211/3138; F15B2211/315; F15B2211/3157; F15B2211/31576; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/327; F15B2211/70; F15B2211/775; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN THE PRESSURE CONTROL SYSTEM FOR A FLUID MOTOR, A FLUID SUPPLY MEANS HAVING LOW PRESSURE AND HIGH PRESSURE SETTINGS, MEANS CONNECTING SAID SUPPLY MEANS AND MOTOR, A SELECTIVELY OPERABLE CONTROL VALVE IN SAID CONNECTING MEANS, MEANS NORMALLY HOLDING SAID SUPPLY MEANS AT ITS LOW PRESSURE SETTING, SHIFTING OF SAID CONTROL VALVE CAUSING FLUID FLOW A LOW PRESSURE FROM SAID SUPPLY MEANS TO SAID MOTOR, WHEREBY A PRESSURE DROP WILL BE CREATED BETWEEN SAID SUPPLY MEANS AND MOTOR, AND MEANS RESPONSIVE TO REDUCTION OF SAID PRESSURE DROP UPON STALLING OF SAID MOTOR OF SHIFTING SAID SUPPLY MEANS TO ITS HIGH PRESSURE SETTING.
Claim 2
Dependent Claim
102 words
IN THE PRESSURE CONTROL SYSTEM FOR A FLUID MOTOR, A FLUID SUPPLY MEANS HAVING LOW PRESSURE AND HIGH PRESSURE SETTINGS, MEANS CONNECTING SAID SUPPLY MEANS AND MOTOR, A SELECTIVELY OPERABLE CONTROL VALVE IN SAID CONNECTING MEANS, MEANS NORMALLY HOLDING SAID SUPPLY MEANS AT ITS LOW PRESSURE SETTING, SHIFTING OF SAID CONTROL VALVE CAUSING FLUID FLOW A LOW PRESSURE FROM SAID SUPPLY MEANS TO SAID MOTOR, WHEREBY A PRESSURE DROP WILL BE CREATED BETWEEN SAID SUPPLY MEANS AND MOTOR, AND MEANS RESPONSIVE TO REDUCTION OF SAID PRESSURE DROP UPON STALLING OF SAID MOTOR OF SHIFTING SAID SUPPLY MEANS TO ITS HIGH PRESSURE SETTING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |