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US4909262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for obtaining a body limb torque signal
Assignee: Orthopedic Systems Inc
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Filing: 1989-01-31
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Granted: 1990-03-20
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Expires: 2009-01-31
Abstract
Abstract An apparatus utilizing a clamp mechanism for holding a rotating body limp. A mechanical arm is linked to the clamp mechanism and rotatably connects to a pivot member. The angular rotation of the mechanical arm about the pivot member is measured simultaneously with force exerted by the rotating body limb on the clamp mechanism. A strain gage is linked to the clamp mechanism to provide such force measurement.
Inventors
- 👤 Alan A. Halpern
- 👤 Steven Lamb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:44
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/103; A61B5/11; A61B5/1107; A61B5/45; A61B5/4528; A61B5/68; A61B5/6801; A61B5/6813; A61B5/6828; A61B5/70; A61B5/702
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
An apparatus for obtaining a signal representing a measurement of the torque produced by a rotating biological limb, comprising: a. clamp means for holding the rotating biological limb; b. an arm, including means linking said arm to said clamp means; c. a pivot member, said arm rotatably connected to said pivot member; d. means for measuring the angular rotation of said arm about said pivot member; e. means for measuring the force exerted by the rotating biological limb on said clamp means simultaneously with said measurement of the angular rotation of said arm, said means including a strain gage linked to said clamp means.
Claim 2
Independent Claim
104 words
An apparatus for obtaining a signal representing a measurement of the torque produced by a rotating biological limb, comprising: a. clamp means for holding the rotating biological limb; b. an arm, including means linking said arm to said clamp means; c. a pivot member, said arm rotatably connected to said pivot member; d. means for measuring the angular rotation of said arm about said pivot member; e. means for measuring the force exerted by the rotating biological limb on said clamp means simultaneously with said measurement of the angular rotation of said arm, said means including a strain gage linked to said clamp means.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 in which additionally comprises regulating means for providing mechanical resistance to said rotation of said arm.
Claim 4
Dependent Claim
30 words
The apparatus of claim 2 in which said regulating means for providing mechanical resistance to said rotation of said arm includes a hydraulic cylinder mechanically linked to said strain gage.
Claim 5
Dependent Claim
22 words
The apparatus of claim 3 which further comprises adjusting means for determining the level of mechanical resistance provided by said regulating means.
Claim 6
Dependent Claim
24 words
The apparatus of claim 4 in which said adjusting means includes valve means for controlling the flow of hydraulic fluid through said hydraulic cylinder.
Claim 7
Dependent Claim
27 words
The apparatus of claim 5 which additionally comprises a platform, said clamp means pivotally connected to said platform and said pivot member being connected to said platform.
Claim 8
Dependent Claim
31 words
The apparatus of claim 1 in which said means linking said arm to said clamp means includes an appendage pivotally attached to said arm and pivotally attached to said clamp means.
Claim 9
Dependent Claim
20 words
The apparatus of claim 7 which additionally comprises regulating means for providing mechanical resistance to said rotation of said arm.
Claim 10
Dependent Claim
18 words
The apparatus of claim 8 which additionally comprises a platform, said clamp means pivotally connected to said platform.
Claim 11
Dependent Claim
25 words
The apparatus of claim 9 in which said clamp means is pivotally connected to said platform, and said pivot member is connected to said platform.
Claim 12
Dependent Claim
34 words
The apparatus of claim 10 in which said regulating means includes a hydraulic cylinder mechanically linked to said strain gage and valve means for controlling the flow of hydraulic fluid through said hydraulic cylinder.
Claim 13
Dependent Claim
15 words
The apparatus of claim 11 in which said valve means is mounted on said platform.
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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |