US4665905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic elbow and knee extension brace
Assignee: Individual
•
Filing: 1986-06-09
•
Granted: 1987-05-19
•
Expires: 2006-06-09
Abstract
Abstract A wire frame structure of two parallel aligned members are formed into a compression spring centrally positioned to provide controlled force at each end. U-shaped yokes are adjustably affixed to the aligned members, one to each end. The yokes are hinged to cuffs suitable for attachment to human arm or leg members by self-fastening straps and adjacent the center springs, two additional securing straps are provided. In use, the brace assemblage provides a dynamic tension to apply a controlled force on an elbow or knee flexion contracture.
Inventors
- 👤 Charles S. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:57
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/0102; A61F5/0104; A61F5/0106; A61F5/0118
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
A dynamic elbow and knee extension brace comprising two longitudinal rods in parallel alignment structured centrally into coil springs and fastened adjustably to U-shaped yoke rods at both outer ends, each yoke rod affixed by a hinge to a wrist or lower leg cuff at one end and to a proximal arm or upper leg cuff at the other end, there being self-holding straps, one fastened to the back of each cuff and two hingedly affixed to one of the said longitudinal rods centrally adjacent the said coil spring, one on either side thereof, the said cuffs curved, padded, and malleable to conform to various human arm and leg sizes there being a plastic sleeve encompassing the yoke rod at the hinge attach position.
Claim 2
Dependent Claim
124 words
A dynamic elbow and knee extension brace comprising two longitudinal rods in parallel alignment structured centrally into coil springs and fastened adjustably to U-shaped yoke rods at both outer ends, each yoke rod affixed by a hinge to a wrist or lower leg cuff at one end and to a proximal arm or upper leg cuff at the other end, there being self-holding straps, one fastened to the back of each cuff and two hingedly affixed to one of the said longitudinal rods centrally adjacent the said coil spring, one on either side thereof, the said cuffs curved, padded, and malleable to conform to various human arm and leg sizes there being a plastic sleeve encompassing the yoke rod at the hinge attach position.
Claim 3
Dependent Claim
36 words
The dynamic elbow and knee extension brace of claim 1, wherein an enlarged yoke, cuff, and strap auguments the said wrist yoke, cuff and strap with lower leg fitting sizes applicable to the dorsal aspects thereof.
Claim 4
Dependent Claim
37 words
The dynamic elbow and knee extension brace of claim 1, wherein an enlarged yoke, cuff, and strap auguments the said proximal arm yoke, cuff, and strap with upper leg fitting sizes applicable to the dorsal aspects thereof.
Claim 5
Dependent Claim
26 words
The dynamic elbow and knee extension brace of claim 1, wherein the longitudinal rods are increased in diameter, length, and coil spring tension for leg application.
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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) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |