US3124344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Takeo mano
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:12
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/56; E05F15/40; E05F15/42; E05F15/47; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/531
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A MEANS FOR OPERATING THE DOOR OF A MOTOR VEHICLE COMPRISING A DOOR, A FRAME THEREFOR, A FLUID PRESSURE MOTOR HAVING A CYLINDER MOUNTED ON SAID DOOR, SAID CYLINDER HAVING A RECIPROCATING PISTON AND PISTON ROD THEREIN, MEANS FOR CONNECTING ONE SIDE OF SAID PISTON TO A SOURCE OF FLUID AT SUBATMOSPHERIC PRESSURE AND ADMITTING FLUID AT ATMOSPHERIC PRESSURE AT THE OTHER SIDE OF THE PISTON, A LEVER SYSTEM CONNECTED TO THE PISTON ROD AND TO SAID DOOR FRAME, A CONTROLLING VALVE MEANS FOR CONTROLLING AT LEAST ONE OF THE FLUIDS ADMITTED TO SAID FLUID MOTOR, SAID LEVER SYSTEM COMPRISING A PAIR OF SUPERPOSED LEVERS CONSISTING OF A FIRST LEVER PIVOTED AT ONE END ON SAID DOOR AND BEING CONNECTED AT THE OTHER END TO SAID PISTON ROD, AND A SECOND LEVER PIVOTED INTERMEDIATE ITS ENDS ON THE PIVOT MEANS FOR SAID FIRST LEVER AND HAVING A LINK CONNECTED AT ONE END TO ONE END THEREOF, SAID LINK BEING CONNECTED AT ITS OTHER END TO SAID DOOR FRAME.
Claim 2
Dependent Claim
169 words
IN A MEANS FOR OPERATING THE DOOR OF A MOTOR VEHICLE COMPRISING A DOOR, A FRAME THEREFOR, A FLUID PRESSURE MOTOR HAVING A CYLINDER MOUNTED ON SAID DOOR, SAID CYLINDER HAVING A RECIPROCATING PISTON AND PISTON ROD THEREIN, MEANS FOR CONNECTING ONE SIDE OF SAID PISTON TO A SOURCE OF FLUID AT SUBATMOSPHERIC PRESSURE AND ADMITTING FLUID AT ATMOSPHERIC PRESSURE AT THE OTHER SIDE OF THE PISTON, A LEVER SYSTEM CONNECTED TO THE PISTON ROD AND TO SAID DOOR FRAME, A CONTROLLING VALVE MEANS FOR CONTROLLING AT LEAST ONE OF THE FLUIDS ADMITTED TO SAID FLUID MOTOR, SAID LEVER SYSTEM COMPRISING A PAIR OF SUPERPOSED LEVERS CONSISTING OF A FIRST LEVER PIVOTED AT ONE END ON SAID DOOR AND BEING CONNECTED AT THE OTHER END TO SAID PISTON ROD, AND A SECOND LEVER PIVOTED INTERMEDIATE ITS ENDS ON THE PIVOT MEANS FOR SAID FIRST LEVER AND HAVING A LINK CONNECTED AT ONE END TO ONE END THEREOF, SAID LINK BEING CONNECTED AT ITS OTHER END TO SAID DOOR FRAME.
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |