Patent US4110190A successfully refreshed from Google Patents.
Patent US3150672A successfully refreshed from Google Patents.
US3150672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contour crutch
Assignee: JOHNSON THERAPEUTICAL CORP
•
Filing: 1961-12-04
•
Granted: 1964-09-29
•
Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur J Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:40
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A CRUTCH, SPACED VERTICAL SIDE SUPPORT MEMBERS MERGING INTO A FOOT AT THE BOTTOM END THEREOF, A HANDLE ADJUSTABLY MOUNTED BETWEEN SAID SIDE SUPPORT MEMBERS AT AN INTERMEDIATE LOCATION THEREALONG, AND A CRUTCH HEAD SECURED TO THE TOP END OF SAID SUPPORT MEMBERS AT A POINT NORMALLY SUBSTANTIALLY BELOW THE ARM PIT OF THE USER, SAID CRUTCH HEAD INCLUDING AN ELONGATED BODY WITH A WIDE RADIUS CONCAVE SURFACE ON ONE SIDE THEREOF EXTENDING SUBSTANTIALLY THE LENGTH OF SAID CRUTCH HEAD BODY, CONTOURED TO SUBSTANTIALLY EMBRACE THE RIB CAGE OF THE USER, AND WITH A CONVEX SURFACE ON THE OTHER SIDE THEREOF, SAID CONVEX SURFACE HAVING A CONCAVE PORTION CENTRALLY THEREOF OF A RADIUS SUBSTANTIALLY LESS THAN THAT OF SAID FIRST-MENTIONED CONCAVE SURFACE CONTOURED TO SUBSTANTIALLY EMBRACE THE MEDIAL PORTION OF THE ARM OF THE USER.
Claim 2
Dependent Claim
136 words
IN A CRUTCH, SPACED VERTICAL SIDE SUPPORT MEMBERS MERGING INTO A FOOT AT THE BOTTOM END THEREOF, A HANDLE ADJUSTABLY MOUNTED BETWEEN SAID SIDE SUPPORT MEMBERS AT AN INTERMEDIATE LOCATION THEREALONG, AND A CRUTCH HEAD SECURED TO THE TOP END OF SAID SUPPORT MEMBERS AT A POINT NORMALLY SUBSTANTIALLY BELOW THE ARM PIT OF THE USER, SAID CRUTCH HEAD INCLUDING AN ELONGATED BODY WITH A WIDE RADIUS CONCAVE SURFACE ON ONE SIDE THEREOF EXTENDING SUBSTANTIALLY THE LENGTH OF SAID CRUTCH HEAD BODY, CONTOURED TO SUBSTANTIALLY EMBRACE THE RIB CAGE OF THE USER, AND WITH A CONVEX SURFACE ON THE OTHER SIDE THEREOF, SAID CONVEX SURFACE HAVING A CONCAVE PORTION CENTRALLY THEREOF OF A RADIUS SUBSTANTIALLY LESS THAN THAT OF SAID FIRST-MENTIONED CONCAVE SURFACE CONTOURED TO SUBSTANTIALLY EMBRACE THE MEDIAL PORTION OF THE ARM OF THE USER.
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) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |