Patent US4307608A successfully refreshed from Google Patents.
US4307608A
Expired / Lapsed
US
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Apparatus for digitally displaying muscle strength
Assignee: Fitness Motivation Inst of America
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Filing: 1980-01-14
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Granted: 1981-12-29
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Expires: 2000-01-14
Abstract
Abstract This disclosure relates to an apparatus for digitally displaying muscle strength. This apparatus measures the output of a load cell under tension or compression and presents a digital readout of the force applied to the load cell in pounds. This apparatus features among other things an analog output which is linearly related to force in pounds for driving a chart recorder, a digital readout of force in pounds and a memory feature which permits retention of the peak value in pounds as a number readout until such time as the result is cancelled at the press of a button.
Inventors
- 👤 Ronald E. Useldinger
- 👤 Joseph E. Byerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:54
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/22; A61B5/224; A63; A63B; A63B24/00; G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/225; G01L1/2256; A63B2220/00; A63B2220/50; A63B2220/51
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A digital strength meter apparatus for measuring human strength comprising, in combination, means for converting each one of an applied human compressive and human tensive force to an electrical signal, gripping means coupled to said converting means for applying said force to said converting means, peak detector means electrically coupled to said converting means for retaining a signal representative of the maximum force applied to said gripping means, and digital readout means electrically coupled to said peak detector means for digitally displaying in units of force per digit unit the peak force applied to said converting means by said gripping means.
Claim 2
Dependent Claim
101 words
A digital strength meter apparatus for measuring human strength comprising, in combination, means for converting each one of an applied human compressive and human tensive force to an electrical signal, gripping means coupled to said converting means for applying said force to said converting means, peak detector means electrically coupled to said converting means for retaining a signal representative of the maximum force applied to said gripping means, and digital readout means electrically coupled to said peak detector means for digitally displaying in units of force per digit unit the peak force applied to said converting means by said gripping means.
Claim 3
Dependent Claim
26 words
A digital strength meter apparatus in accordance with claim 1 wherein said means for converting an applied force to an electrical signal comprises a load cell.
Claim 4
Dependent Claim
20 words
A digital strength meter apparatus in accordance with claim 1 wherein said gripping means comprises at least one handgrip member.
Claim 5
Dependent Claim
18 words
A digital strength meter apparatus in accordance with claim 3 wherein said gripping means comprises two handgrip members.
Claim 6
Dependent Claim
26 words
A digital strength meter apparatus in accordance with claim 4 wherein said means for converting an applied force to an electrical signal comprises a load cell.
Claim 7
Dependent Claim
54 words
A digital strength meter apparatus in accordance with claim 1 wherein said converting means comprises amplifier means for amplifying said electrical signal, and said digital readout means comprises digital voltmeter means coupled to said amplifier means for converting the amplified signal received from said amplifier means from an analog signal to a digital signal.
Claim 8
Dependent Claim
27 words
A digital strength meter apparatus in accordance with claim 6 including analog electrical output means coupled to said amplifier means for driving a strip chart graphic recorder.
Claim 9
Dependent Claim
22 words
A digital strength meter apparatus in accordance with claim 6 including means for adjusting the zero point of said digital readout means.
Claim 10
Dependent Claim
29 words
A digital strength meter apparatus in accordance with claim 1 wherein said peak detector means comprises switching means for cancelling the digital readouts displayed by said digital readout means.
References Cited (Backward Citations)
CA656187A
Cited
US3012195A
Cited
US3442132A
Cited
US3559059A
Cited
US3680386A
Cited
US3670573A
Cited
US3742760A
Cited
US3868848A
Cited
US3848468A
Cited
US3896672A
Cited
US3895517A
Cited
US3995492A
Cited
US4115767A
Cited
US4125016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-28 | 1985-06-29 | 1985-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-28 | 1989-06-29 | 1989-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-28 | 1993-06-29 | 1993-12-29 | $7700.00 | Window Closed / Lapsed |