US3850430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exercise device
Assignee: Individual
•
Filing: 1973-05-17
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Granted: 1974-11-26
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Expires: 1993-05-17
Abstract
Abstract An exercise device is provided which elicits hamstring reinforcement of the quadriceps during terminal extension of the knee. The device has a main base member to which is secured a height adjustment post. Counter resistance means are slidably supported by the height adjustment post. A pivot arm is pivotally attached to the counter resistance means and resistance transfer means are slidably secured to the pivot arm.
Inventors
- 👤 R Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:23
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/06; A63B21/0615; A63B21/08; A63B21/40; A63B21/4027; A63B21/4033; A63B21/4035; A63B21/4041; A63B21/4047
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
82 words
An exercise device comprising: a. a main base member, b. a height adjustment post secured to said main base member, c. counter resistance means slidably supported by said height adjustment post, d. a pivot arm pivotally attached to said counter resistance means, e. and resistance transfer means for applying a downward force to the leg of an exercisor during elevation thereof and slidably secured to said pivot arm whereby hamstring reinforcement of the quadriceps is elicited during terminal extension of the knee.
Claim 2
Dependent Claim
82 words
An exercise device comprising: a. a main base member, b. a height adjustment post secured to said main base member, c. counter resistance means slidably supported by said height adjustment post, d. a pivot arm pivotally attached to said counter resistance means, e. and resistance transfer means for applying a downward force to the leg of an exercisor during elevation thereof and slidably secured to said pivot arm whereby hamstring reinforcement of the quadriceps is elicited during terminal extension of the knee.
Claim 3
Dependent Claim
44 words
The exercise device of claim 1 wherein first locking means are provided in conjunction with the slidable connection between the height adjustment post and the counter resistance means whereby the height of said counter resistance means above the main base member is selectively adjustable.
Claim 4
Dependent Claim
45 words
The exercise device of claim 2 wherein second locking means are provided in conjunction with the slidable connection between the pivot arm and the resistance transfer means whereby the position of said resistance transfer means along the length of said pivot arm is selectively adjustable.
Claim 5
Dependent Claim
45 words
The exercise device of claim 1 wherein second locking means are provided in conjunction with the slidable connection between the pivot arm and the resistance transfer means whereby the position of said resistance transfer means along the length of said pivot arm is selectively adjustable.
Claim 6
Dependent Claim
33 words
The exercise device of claim 1 wherein weight receiving means are provided on the resistance transfer means whereby one or more weights may be selectively utilized in conjunction with the resistance transfer means.
Claim 7
Dependent Claim
29 words
The exercise device of claim 1 wherein the counter resistance means is provided with a lateral extension on each side thereof, each extension having associated therewith a roller pad.
Claim 8
Dependent Claim
29 words
The exercise device of claim 6 wherein the resistance transfer means is provided with a lateral extension on each side thereof, each extension having associated therewith a roller pad.
Claim 9
Dependent Claim
29 words
The exercise device of claim 1 wherein the resistance transfer means is provided with a lateral extension on each side thereof, each extension having associated therewith a roller pad.
Claim 10
Dependent Claim
34 words
The exercise device of claim 1 wherein the height adjustment post comprises an upright rail element and the counter resistance means is provided with an open enDed tubing slidably received about the rail element.
Claim 11
Dependent Claim
39 words
The exercise device of claim 9 wherein first locking means are provided for adjustably securing the open ended tubing to the rail element whereby the height of said counter resistance means above the main base member is selectively adjustable.
Claim 12
Dependent Claim
16 words
The exercise device of claim 9 wherein the upright rail is provided with a longitudinal slot.
Claim 13
Dependent Claim
30 words
The exercise device of claim 1 wherein the pivot arm comprises a rail element and the resistance transfer means has an open ended tubing slidably received about the rail element.
Claim 14
Dependent Claim
41 words
The exercise device of claim 12 wherein second locking means are provided for adjustably securing the open ended tubing to the rail element whereby the position of the resistance transfer means along the length of the pivot arm is selectively adjustable.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |