Patent US5174154A successfully refreshed from Google Patents.
US5174154A
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US
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Isometric force measuring device
Assignee: Greenleaf Medical Systems Inc
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Filing: 1990-09-12
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Granted: 1992-12-29
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Expires: 2010-09-12
Abstract
Abstract An isometric force-measuring device is comprised of first and second opposed force-bearing surfaces. An incompressible, nonfluid material is positioned between the first and second surfaces. The material is capable of building up pressure in response to the application of force to the force-bearing surfaces. A pressure transducer is responsive to the pressure stored in the material for producing an output signal representative of the force.
Inventors
- 👤 Glenn R. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:58
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/225; A; A61; A61B; A61B5/00; A61B5/22; A61B5/224; A61B5/225; G01L1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A method for measuring an isometric force, said method comprising the steps of: receiving a force from a user's thumb through a push button means; receiving a force from at least one of a user's fingers through a plate means; building up pressure in response to the application of force to said push button means and said plate means in an incompressible, elastomeric material positioned between said push button means and plate means without producing any tactile feedback to the user; and producing an output signal representative of said force through a pressure transducer means responsive to said pressure stored in said material.
Claim 2
Independent Claim
103 words
A method for measuring an isometric force, said method comprising the steps of: receiving a force from a user's thumb through a push button means; receiving a force from at least one of a user's fingers through a plate means; building up pressure in response to the application of force to said push button means and said plate means in an incompressible, elastomeric material positioned between said push button means and plate means without producing any tactile feedback to the user; and producing an output signal representative of said force through a pressure transducer means responsive to said pressure stored in said material.
References Cited (Backward Citations)
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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) | 1995-12-29 | 1996-06-29 | 1996-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-29 | 2000-06-29 | 2000-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-29 | 2004-06-29 | 2004-12-29 | $7700.00 | Window Closed / Lapsed |