US3098502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and dash-pot assembly
Assignee: Library and Archives Canada
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Filing: 1961-04-21
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Granted: 1963-07-23
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Expires: 1981-04-21
Abstract
No abstract record available.
Inventors
- 👤 Deve Vagn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/01; F16K47/011; F16K47/0111; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/785
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A VALVE AND DASH-POT ASSEMBLY COMPRISNG A VALVE HOUSING HAVING A VALVE SEAT THEREIN, A VALVE MEMBER MOVABLY MOUNTED IN SAID VALVE HOUSING FOR MOVEMENT IN ONE DIRECTION TO A VALVE-CLOSING POSITION AGAINST SAID SEAT OR IN THE OPPOSITE DIRECTION TO A VALVE-OPENING POSITION AWAY FROM SAID SEAT, A DASH-POT SYSTEM INCLUDING A CLOSED HYDRAULIC CIRCUIT FILLED WITH DAMPING FLUID AND AN OPERATIVE MEMBER POSITIONED TO BE ENGAGED AND MOVED AGAINST THE RESISTANCE OF SAID DAMPING FLUID BY SAID VALVE MEMBER DURING THE FINAL PART OF THE MOVEMENT OF THE VALVE MEMBER IN AT LEAST ONE OF SAID DIRECTIONS, A PATH OF POSSIBLE LEAKAGE BETWEEN SAID VALVE HOUSING AND SAID DASH-POT SYSTEM, SEALING MEANS ARRANGED IN SAID PATH TO PREVENT COMMINGLING OF THE "VALVED" FLUID AND THE DAMPING FLUID BY LEAKAGE PAST SAID OPERATIVE MEMBER, AND MEANS FOR MAINTAINING THE DAMPING FLUID IN THE HYDRAULIC CIRCUIT OF THE DASH-POT SYSTEM UNDER A PRESSURE AS CLOSE AS POSSIBLE TO THE PRESSURE OF THE "VALVED" FLUID.
Claim 2
Dependent Claim
164 words
A VALVE AND DASH-POT ASSEMBLY COMPRISNG A VALVE HOUSING HAVING A VALVE SEAT THEREIN, A VALVE MEMBER MOVABLY MOUNTED IN SAID VALVE HOUSING FOR MOVEMENT IN ONE DIRECTION TO A VALVE-CLOSING POSITION AGAINST SAID SEAT OR IN THE OPPOSITE DIRECTION TO A VALVE-OPENING POSITION AWAY FROM SAID SEAT, A DASH-POT SYSTEM INCLUDING A CLOSED HYDRAULIC CIRCUIT FILLED WITH DAMPING FLUID AND AN OPERATIVE MEMBER POSITIONED TO BE ENGAGED AND MOVED AGAINST THE RESISTANCE OF SAID DAMPING FLUID BY SAID VALVE MEMBER DURING THE FINAL PART OF THE MOVEMENT OF THE VALVE MEMBER IN AT LEAST ONE OF SAID DIRECTIONS, A PATH OF POSSIBLE LEAKAGE BETWEEN SAID VALVE HOUSING AND SAID DASH-POT SYSTEM, SEALING MEANS ARRANGED IN SAID PATH TO PREVENT COMMINGLING OF THE "VALVED" FLUID AND THE DAMPING FLUID BY LEAKAGE PAST SAID OPERATIVE MEMBER, AND MEANS FOR MAINTAINING THE DAMPING FLUID IN THE HYDRAULIC CIRCUIT OF THE DASH-POT SYSTEM UNDER A PRESSURE AS CLOSE AS POSSIBLE TO THE PRESSURE OF THE "VALVED" FLUID.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |