US3157188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically actuated crutch
Assignee: FAR PRIT ASSOCIATE Inc
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Filing: 1963-06-04
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Granted: 1964-11-17
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Expires: 1983-06-04
Abstract
No abstract record available.
Inventors
- 👤 George R Farnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:40
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A VARIABLE LENGTH CRUTCH COMPRISING AN UPPER CYLINDER SECTION, A LOWER PISTON SECTION HAVING AN UPPER PORTION TELESCOPICALLY RECEIVED WITHIN SAID UPPER CYLINDER SECTION; AN ARM PIT REST SECURED TO THE UPPER EXTREMITY OF SAID UPPER CYLINDER SECTION; A HAND HOLD ASSEMBLY SECURED TO SAID UPPER CYLINDER ASSEMBLY; A HYDRAULIC PUMP CARRIED BY SAID CRUTCH FOR GENERATING HYDRAULIC PRESSURE; AN ELECTRICAL DRIVING MOTOR FOR SAID PUMP CARRIED BY SAID CRUTCH MEANS FOR ENERGIZING SAID ELECTRICAL PUMP DRIVING MOTOR CONDUIT MEANS FOR SUPPLYING SAID HYDRAULIC PRESSURE TO THE INTERIOR OF SAID UPPER CYLINDER SECTION ABOVE SAID PISTON SECTION; AND FINGERTIP CONTROL MEANS ASSOCIATED WITH SAID HAND HOLD ASSEMBLY FOR CONTROLLING THE OPERATION OF SAID PUMP WHEREBY THE OPERATION OF SAID HYDRAULIC PUMP MAY BE SELECTIVELY MANUALLY CONTROLLED, TO SUPPLY HYDRAULIC PRESSURE TO SAID UPPER CYLINDER FOR EXTENDING SAID CYLINDER AND PISTON SECTIONS RELATIVE TO EACH OTHER UNDER POWER TO ENABLE A HANDICAPPED USER TO BE RAISED FROM A GENERALLY RECLINED POSITION TO A GENERALLY ERECT POSITION.
Claim 2
Dependent Claim
165 words
A VARIABLE LENGTH CRUTCH COMPRISING AN UPPER CYLINDER SECTION, A LOWER PISTON SECTION HAVING AN UPPER PORTION TELESCOPICALLY RECEIVED WITHIN SAID UPPER CYLINDER SECTION; AN ARM PIT REST SECURED TO THE UPPER EXTREMITY OF SAID UPPER CYLINDER SECTION; A HAND HOLD ASSEMBLY SECURED TO SAID UPPER CYLINDER ASSEMBLY; A HYDRAULIC PUMP CARRIED BY SAID CRUTCH FOR GENERATING HYDRAULIC PRESSURE; AN ELECTRICAL DRIVING MOTOR FOR SAID PUMP CARRIED BY SAID CRUTCH MEANS FOR ENERGIZING SAID ELECTRICAL PUMP DRIVING MOTOR CONDUIT MEANS FOR SUPPLYING SAID HYDRAULIC PRESSURE TO THE INTERIOR OF SAID UPPER CYLINDER SECTION ABOVE SAID PISTON SECTION; AND FINGERTIP CONTROL MEANS ASSOCIATED WITH SAID HAND HOLD ASSEMBLY FOR CONTROLLING THE OPERATION OF SAID PUMP WHEREBY THE OPERATION OF SAID HYDRAULIC PUMP MAY BE SELECTIVELY MANUALLY CONTROLLED, TO SUPPLY HYDRAULIC PRESSURE TO SAID UPPER CYLINDER FOR EXTENDING SAID CYLINDER AND PISTON SECTIONS RELATIVE TO EACH OTHER UNDER POWER TO ENABLE A HANDICAPPED USER TO BE RAISED FROM A GENERALLY RECLINED POSITION TO A GENERALLY ERECT POSITION.
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |