US3272210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescopic folding crutch
Assignee: Individual
•
Filing: 1964-09-24
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Granted: 1966-09-13
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Expires: 1984-09-24
Abstract
No abstract record available.
Inventors
- 👤 Boruvka Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:02
CPC Classifications
A; A61; A61H; A61H3/00; A61H2003/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A CRUTCH CONSTRUCTION AN ELONGATED STAFF ROUND IN CROSS SECTION, AN ARM REST ADJUSTABLY SUPPORTED AT ONE END OF THE STAFF, AND APPARATUS SLIDABLY AND REMOVABLY MOUNTED AT THE OTHER END OF THE STAFF FOR ATTACHING THE STAFF TO A HEEL OF THE SHOE OF THE USER FOR TRANSMITTING WHEN WALKING THE MOVEMENT OF THE SHOE TO THE STAFF INCLUDING A HORSESHOE BAND ADAPTED TO ENCIRCLE THE HEEL, THE FREE ENDS OF SAID BAND HAVING OPPOSED HOLES THEREIN, AND A THREADED BOLT IN SAID HOLES SPANNING THE SPACE BETWEEN THE ENDS, ONE END OF THE BOLT EXTENDING BEYOND ONE OF THE ENDS AND A WING NUT ON THE EXTENDING END OF THE BOLT FOR ADJUSTABLY SECURING THE BAND TO THE HEEL.
Claim 2
Dependent Claim
122 words
IN A CRUTCH CONSTRUCTION AN ELONGATED STAFF ROUND IN CROSS SECTION, AN ARM REST ADJUSTABLY SUPPORTED AT ONE END OF THE STAFF, AND APPARATUS SLIDABLY AND REMOVABLY MOUNTED AT THE OTHER END OF THE STAFF FOR ATTACHING THE STAFF TO A HEEL OF THE SHOE OF THE USER FOR TRANSMITTING WHEN WALKING THE MOVEMENT OF THE SHOE TO THE STAFF INCLUDING A HORSESHOE BAND ADAPTED TO ENCIRCLE THE HEEL, THE FREE ENDS OF SAID BAND HAVING OPPOSED HOLES THEREIN, AND A THREADED BOLT IN SAID HOLES SPANNING THE SPACE BETWEEN THE ENDS, ONE END OF THE BOLT EXTENDING BEYOND ONE OF THE ENDS AND A WING NUT ON THE EXTENDING END OF THE BOLT FOR ADJUSTABLY SECURING THE BAND TO THE HEEL.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |