US4149278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact artificial hand
Assignee: National Aeronautics and Space Administration
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Filing: 1977-09-27
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Granted: 1979-04-17
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Expires: 1997-09-27
Abstract
Abstract A compact and relatively simple artificial hand, which includes hooks pivotally mounted on a first frame to move together and apart, the first frame being rotatably mounted on a second frame to enable "turning at the wrist" movement without limitation, and the second frame being pivotally mounted on a third frame to permit "flexing at the wrist" movement. A hook-driving motor is fixed to the second frame but has a shaft that drives a speed reducer on the first frame which, in turn, drives the hooks. A second motor mounted on the second frame, turns a gear on the first frame to rotate the first frame and the hooks thereon. A third motor mounted on the third frame, turns a gear on a second frame to pivot it.
Inventors
- 👤 with respect to an invention of Frosch Robert A. Administrator of the National Aeronautics and Space Administration
- 👤 Gordon A. Wiker
- 👤 Wolfgang A. Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:27
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/54; A61F2/58; A61F2/583; A61F2/588; B; B25; B25J; B25J15/00; B25J15/02; B25J15/0206; B25J17/00; B25J17/02; B25J17/0241; B25J17/025; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30518; A61F2002/30523; A61F2002/30525; A61F2/68; A61F2/70; A61F2002/701; A61F2220/00; A61F2220/0025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
An artificial hand device comprising: a first frame; a second frame rotatably supporting said first frame for rotation about a predetermined axis; means for rotating said first frame about said axis; a pair of object-engaging members having inner ends pivotally mounted on said first frame; a motor mounted on said second frame, said motor having a motor shaft extending along said axis; and a speed reducer gear train connected to said motor shaft, said gear train connected to said object-engaging members to pivot them; said gear train mounted on said first frame, whereby the motor applies minimum torque tending to retard rotation of the first frame.
Claim 2
Dependent Claim
106 words
An artificial hand device comprising: a first frame; a second frame rotatably supporting said first frame for rotation about a predetermined axis; means for rotating said first frame about said axis; a pair of object-engaging members having inner ends pivotally mounted on said first frame; a motor mounted on said second frame, said motor having a motor shaft extending along said axis; and a speed reducer gear train connected to said motor shaft, said gear train connected to said object-engaging members to pivot them; said gear train mounted on said first frame, whereby the motor applies minimum torque tending to retard rotation of the first frame.
Claim 3
Dependent Claim
71 words
The device described in claim 1 including: a third frame pivotally supporting said second frame for pivoting about a second axis extending substantially perpendicular to said first axis, said third frame comprising a yoke having a pair of arms and said second frame having a pair of arms lying on opposite sides of said yoke arms and pivotally connected thereto, and said first motor lying between said arms of said yoke.
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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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |