US4875674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorbing means with self calibrating monitor
Assignee: Concept II Inc
•
Filing: 1988-08-12
•
Granted: 1989-10-24
•
Expires: 2008-08-12
Abstract
Abstract The apparatus is adapted to an exercise device with an energy absorbing unit that has a self calibrating energy monitor. It comprises at least one rotating flywheel which is driven through a one way clutch. There is a braking mechanism to apply resistance to the flywheel. A self calibrating energy monitor computes the dissipated power with a formula relating power to angular velocity, typically a coefficient of resistance times the angular velocity of the flywheel raised by an exponent determined by the brake used. The monitor consists of a microprocessor that is programmed to periodically self calibrate the formula and receives its impulses from a sensor.
Inventors
- 👤 Peter D. Dreissigacker
- 👤 Richard A. Dreissigacker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:34
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/0076; A63B21/00; A63B21/15; A63B21/151; A63B21/153; A63B21/157; A63B24/00; A63B2022/0079; A63B21/008; A63B21/0085; A63B21/0088; A63B21/22; A63B21/225; A63B2220/00; A63B2220/30; A63B2220/34; Y; Y10; Y10S; Y10S482/00; Y10S482/901; Y10S482/902
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
An energy absorbing means with self calibrating monitor for exercise, comprising: a frame; at least one rotating member with a knowm moment of inertia rotatably jounaled in said frame; brake means for applying variable resistance to said rotating member; means for driving said rotating member for allowing the human operator to initiate the action of said rotating member by using said drive means; said drive means is connected to said rotating member by clutch means; said clutch means has release means to allow said rotating member to be disengaged from said drive means; means for measuring angular velocity of said rotating member; calculating means for computing the power dissipation of said brake means by use of a predetermined formula relating power and said angular velocity; means for periodically calibrating said formula by alternatively calculating the power during the disengagement of said rotating member from said drive means; and using said alternative calculation to recalibrate said formula.
Claim 2
Dependent Claim
156 words
An energy absorbing means with self calibrating monitor for exercise, comprising: a frame; at least one rotating member with a knowm moment of inertia rotatably jounaled in said frame; brake means for applying variable resistance to said rotating member; means for driving said rotating member for allowing the human operator to initiate the action of said rotating member by using said drive means; said drive means is connected to said rotating member by clutch means; said clutch means has release means to allow said rotating member to be disengaged from said drive means; means for measuring angular velocity of said rotating member; calculating means for computing the power dissipation of said brake means by use of a predetermined formula relating power and said angular velocity; means for periodically calibrating said formula by alternatively calculating the power during the disengagement of said rotating member from said drive means; and using said alternative calculation to recalibrate said formula.
Claim 3
Dependent Claim
19 words
An energy absorbing means with self calibrating monitor, according to claim 1, wherein: said calculating means has display means.
Claim 4
Dependent Claim
34 words
An energy absorbing means with self calibrating monitor, according to claim 2, wherein: said calculating means has additional means to measure and display the rate of said engagement and disengagement of said drive means.
References Cited (Backward Citations)
US3657926A
Cited
US3859840A
Cited
US3967503A
Cited
US3962914A
Cited
US4141248A
Cited
US4396188A
Cited
US4537396A
Cited
US4674741A
Cited
US4800513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |