Patent US3177664A successfully refreshed from Google Patents.
US3177664A
Expired / Lapsed
US
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Hydro-pneumatic system
Assignee: Versa Technologies Inc
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Filing: 1963-11-29
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Granted: 1965-04-13
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Konkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:24
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/028; F15B11/032; B; B60; B60S; B60S9/00; B60S9/02; B60S9/10; B60S9/12; F15B11/06; F15B11/072; F15B11/0725; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/21; F15B2211/212; F15B2211/216; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/3056; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50536; F15B2211/52; F15B2211/528; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/71
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
347 words
A HYDRO-PNEUMATIC SYSTEM COMPRISING A SOURCE OF AIR UNDER PREDETERMINED LINE PRESSURE, A SOURCE OF HYDRAULIC FLUID HAVING AN INLET AND AN OUTLET, FIRST CONDUIT MEANS CONNECTING SAID SOURCE OF AIR WITH SAID SOURCE OF HYDRAULIC FLUID FOR MOTIVATING FLOW OF SAID FLUID THEREFROM UNDER THE AIR PRESSURE, A WORK-PERFORMING ELEMENT HAVING A SLIDEABLE PISTON WITH A PISTON HEAD, SECOND CONDUIT MEANS CONNECTING SAID SOURCE OF HYDRAULIC FLUID WITH SAID PISTON HEAD FOR EFFECTING MOVEMENT OF THE SAME INTO OPERATIVE POSITION, A NON-RETURN VALVE PROVIDED ADJACENT SAID FLUID SOURCE OUTLET, A RELEASE VALVE HAVING FIRST AND SECOND CHAMBERS, SAID FIRST CHAMBER BEING IN COMMUNICATION WITH SAID SECOND CONDUIT MEANS BETWEEN SAID NON-RETURN VALVE AND SAID WORK-PERFORMING ELEMENT, THIRD CONDUIT MEANS CONNECTING SAID FIRST CHAMBER OF SAID RELEASE VALVE AND THE INLET OF SAID HYDRAULIC FLUID SOURCE FOR RETURN FLOW OF FLUID THERETO, FOURTH CONDUIT MEANS CONNECTING SAID PISTON WITH SAID SOURCE OF AIR FOR EFFECTING MOVEMENT OF THE SAME INTO INOPERATIVE POSITION AND CONNECTING SAID SECOND CHAMBER OF SAID RELEASE VALVE WITH SAID SOURCE OF AIR FOR INTRODUCTION OF THE SAME INTO SAID SECOND CHAMBER WHEN THE SAME IS APPLIED AGAINST SAID PISTON, A VALVE MEMBER PROVIDED SLIDEABLY WITHIN SAID RELEASE VALVE AND BEING URGED INTO CLOSED CONDITION WITHIN SAID FIRST CHAMBER BY HYDRAULIC FLUID THEREIN TO PREVENT UNAUTHORIZED FLOW OF FLUID FROM SAID WORK-PERFORMING ELEMENT THROUGH SAID THIRD CONDUIT MEANS TO THE INLET OF SAID SOURCE OF HYDRAULIC FLUID, SAID VALVE MEMBER BEING FURTHER ADAPTED FOR MOVEMENT INTO VALVE-OPEN CONDITION BY THE PRESSURE OF AIR ADMITTED INTO SAID SECOND CHAMBER THROUGH SAID FOURTH CONDUIT MEANS THEREBY INDUCING RETURN FLUID FLOW, A UNITARY CONTROL VALVE HAVING FIRST, SECOND AND THIRD VALVE PORTIONS, SAID FIRST VALVE PORTION BEING LOCATED WITHIN THE PATH OF SAID FIRST AND FOURTH CONDUIT MEANS, SAID SECOND VALVE PORTION BEING LOCATED WITHIN THE PATH OF SAID FOURTH CONDUIT MEANS, AND SAID THIRD VALVE PORTION BEING LOCATED WITHIN THE PATH OF SAID THIRD CONDUIT MEANS, AND MEANS FOR CONTROLLING THE OPERATION OF SAID CONTROL VALVE FOR SELECTED OPENING AND CLOSING OF THE AFORESAID CONDUIT MEANS.
Claim 2
Dependent Claim
347 words
A HYDRO-PNEUMATIC SYSTEM COMPRISING A SOURCE OF AIR UNDER PREDETERMINED LINE PRESSURE, A SOURCE OF HYDRAULIC FLUID HAVING AN INLET AND AN OUTLET, FIRST CONDUIT MEANS CONNECTING SAID SOURCE OF AIR WITH SAID SOURCE OF HYDRAULIC FLUID FOR MOTIVATING FLOW OF SAID FLUID THEREFROM UNDER THE AIR PRESSURE, A WORK-PERFORMING ELEMENT HAVING A SLIDEABLE PISTON WITH A PISTON HEAD, SECOND CONDUIT MEANS CONNECTING SAID SOURCE OF HYDRAULIC FLUID WITH SAID PISTON HEAD FOR EFFECTING MOVEMENT OF THE SAME INTO OPERATIVE POSITION, A NON-RETURN VALVE PROVIDED ADJACENT SAID FLUID SOURCE OUTLET, A RELEASE VALVE HAVING FIRST AND SECOND CHAMBERS, SAID FIRST CHAMBER BEING IN COMMUNICATION WITH SAID SECOND CONDUIT MEANS BETWEEN SAID NON-RETURN VALVE AND SAID WORK-PERFORMING ELEMENT, THIRD CONDUIT MEANS CONNECTING SAID FIRST CHAMBER OF SAID RELEASE VALVE AND THE INLET OF SAID HYDRAULIC FLUID SOURCE FOR RETURN FLOW OF FLUID THERETO, FOURTH CONDUIT MEANS CONNECTING SAID PISTON WITH SAID SOURCE OF AIR FOR EFFECTING MOVEMENT OF THE SAME INTO INOPERATIVE POSITION AND CONNECTING SAID SECOND CHAMBER OF SAID RELEASE VALVE WITH SAID SOURCE OF AIR FOR INTRODUCTION OF THE SAME INTO SAID SECOND CHAMBER WHEN THE SAME IS APPLIED AGAINST SAID PISTON, A VALVE MEMBER PROVIDED SLIDEABLY WITHIN SAID RELEASE VALVE AND BEING URGED INTO CLOSED CONDITION WITHIN SAID FIRST CHAMBER BY HYDRAULIC FLUID THEREIN TO PREVENT UNAUTHORIZED FLOW OF FLUID FROM SAID WORK-PERFORMING ELEMENT THROUGH SAID THIRD CONDUIT MEANS TO THE INLET OF SAID SOURCE OF HYDRAULIC FLUID, SAID VALVE MEMBER BEING FURTHER ADAPTED FOR MOVEMENT INTO VALVE-OPEN CONDITION BY THE PRESSURE OF AIR ADMITTED INTO SAID SECOND CHAMBER THROUGH SAID FOURTH CONDUIT MEANS THEREBY INDUCING RETURN FLUID FLOW, A UNITARY CONTROL VALVE HAVING FIRST, SECOND AND THIRD VALVE PORTIONS, SAID FIRST VALVE PORTION BEING LOCATED WITHIN THE PATH OF SAID FIRST AND FOURTH CONDUIT MEANS, SAID SECOND VALVE PORTION BEING LOCATED WITHIN THE PATH OF SAID FOURTH CONDUIT MEANS, AND SAID THIRD VALVE PORTION BEING LOCATED WITHIN THE PATH OF SAID THIRD CONDUIT MEANS, AND MEANS FOR CONTROLLING THE OPERATION OF SAID CONTROL VALVE FOR SELECTED OPENING AND CLOSING OF THE AFORESAID CONDUIT MEANS.
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |