US3088413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle with hydrostatic transmission propelled by free piston engine hydraulic pump
Assignee: International Motors LLC
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Filing: 1960-11-28
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Granted: 1963-05-07
•
Expires: 1980-11-28
Abstract
No abstract record available.
Inventors
- 👤 Arnold E W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:23
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; F; F02; F02B; F02B61/00; F02B71/00; F02B71/04; F02B71/045; F16; F16H; F16H39/00; F16H39/02; F16H61/00; F16H61/38; F16H61/40; F16H61/4183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A FREE-PISTON ENGINE HYDRAULIC PUMP COMPRISING IN COMBINATION ADJACENT AND SECOND POWER UNITS, EACH OF SAID UNITS HAVING A CASING WITH A PAIR OF POWER PISTONS THEREIN POSITIONED FOR RECIPROCATION IN AXIALLY OPPOSED DIRECTIONS IN SYNCHRONIZED RELATION, A FUEL-AIR COMBUSTION CHAMBER DISPOSED OUTBOARDLY OF EACH OF SAID POWER PISTONS IN SAID CASINGS, A POSITIVE DRIVE COUPLING MEANS OPERATIVELY CONNECTED TO SAID UNITS ADAPTED TO SYNCHRONIZE THE POWER PISTONS OF SAID FIRST UNIT IN ALTERNATE POWER STROKE RELATION WITH THE POWER PISTONS OF SAID SECOND UNIT, A HYDRAULIC PUMP PISTON OPERATIVELY CONNECTED INBOARDLY TO EACH OF SAID POWER PISTONS, HYDRAULIC PUMP CYLINDERS MOUNTED ON SAID CASINGS POSITIONED TO RECEIVE IN COOPERATIVE RELATION EACH OF SAID PUMP PISTONS, VALVE MEANS ADAPTED TO COMMUNICATE INLET HYDRAULIC FLUID FROM A LOW PRESSURE HYDRAULIC FLUID SOURCE TO SAID PUMP
Claim 2
Dependent Claim
134 words
A FREE-PISTON ENGINE HYDRAULIC PUMP COMPRISING IN COMBINATION ADJACENT AND SECOND POWER UNITS, EACH OF SAID UNITS HAVING A CASING WITH A PAIR OF POWER PISTONS THEREIN POSITIONED FOR RECIPROCATION IN AXIALLY OPPOSED DIRECTIONS IN SYNCHRONIZED RELATION, A FUEL-AIR COMBUSTION CHAMBER DISPOSED OUTBOARDLY OF EACH OF SAID POWER PISTONS IN SAID CASINGS, A POSITIVE DRIVE COUPLING MEANS OPERATIVELY CONNECTED TO SAID UNITS ADAPTED TO SYNCHRONIZE THE POWER PISTONS OF SAID FIRST UNIT IN ALTERNATE POWER STROKE RELATION WITH THE POWER PISTONS OF SAID SECOND UNIT, A HYDRAULIC PUMP PISTON OPERATIVELY CONNECTED INBOARDLY TO EACH OF SAID POWER PISTONS, HYDRAULIC PUMP CYLINDERS MOUNTED ON SAID CASINGS POSITIONED TO RECEIVE IN COOPERATIVE RELATION EACH OF SAID PUMP PISTONS, VALVE MEANS ADAPTED TO COMMUNICATE INLET HYDRAULIC FLUID FROM A LOW PRESSURE HYDRAULIC FLUID SOURCE TO SAID PUMP
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US2919685A
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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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |