Patent US3739404A successfully refreshed from Google Patents.
US3739404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Braked joint for prostheses and orthoses
Assignee: IPOS KG
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Filing: 1971-11-29
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Granted: 1973-06-19
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Expires: 1991-11-29
Abstract
Abstract A braked joint for artificial limbs of prostheses and orthoses comprising a shaft rigidly mounted on one of the limb members and a brake cable wrapped around the shaft and mounted with its ends at the other of the limb members in an adjustable spring bias arrangement allowing to selectively adjust any desired motion resistance against pivotal movement of the limb members.
Inventors
- 👤 F Gelbenegger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:23
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/64; A61F2/68; A61F2002/6818
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
A braked joint for a prosthesis or an orthosis having two artificial limb members joined by a rigid shaft which is firmly connected to one limb member, comprising, in combination, elastic bearing means provided in the other limb member for elastically supporting said shaft, a frictional cable coiled around said shaft to form at least one complete winding defining a loop having an angle of 360*, one end of said cable being connected to said other limb member, spring means mounted on said other limb member for resiliently tensioning the other end of said cable in such a manner that upon applying a radial load to the shaft by said one limb member the cable exerts a frictional braking which is proportional to the resilient tension of said spring means and to the load.
Claim 2
Dependent Claim
134 words
A braked joint for a prosthesis or an orthosis having two artificial limb members joined by a rigid shaft which is firmly connected to one limb member, comprising, in combination, elastic bearing means provided in the other limb member for elastically supporting said shaft, a frictional cable coiled around said shaft to form at least one complete winding defining a loop having an angle of 360*, one end of said cable being connected to said other limb member, spring means mounted on said other limb member for resiliently tensioning the other end of said cable in such a manner that upon applying a radial load to the shaft by said one limb member the cable exerts a frictional braking which is proportional to the resilient tension of said spring means and to the load.
Claim 3
Dependent Claim
28 words
A braked joint according to claim 1 further including adjusting means between said other limb member and said spring means for adjusting the bias of said spring means.
Claim 4
Dependent Claim
39 words
A braked joint according to claim 2 further including control lever means coupled to said adjusting means and operable to increase the bias of said spring means to such a degree that the cable loop firmly clamps said shaft.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |