US3802701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction type exercising device
Assignee: Individual
•
Filing: 1971-10-08
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Granted: 1974-04-09
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Expires: 1991-10-08
Abstract
Abstract A platform has a vertically mounted, adjustable rotary resistance unit thereon, to which the lower end of the center leg of a vertically disposed T-shaped handle is connected. A subject standing on the platform grips the cross bar of the handle, and rotates the handle back and forth against the force of the resistance unit, thereby exercising selected body muscles. A torque frictional resistance is developed by the resistance unit against the twisting of the center leg by a user acting on the cross bar. The resistance unit has an adjustable clamp that grips a rotor on the lower end of the center leg to vary the frictional resistance to the rotation of the rotor. An anchored vertical bar may be used to lockingly engage the lower most portion of the Tshaped handle so as to offer resistance to twisting of the Tshaped handle. An adjustable collar may be provided on the vertical bar to vary the amount of torque necessary to twist the vertical bar.
Inventors
- 👤 L Good
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:50
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/012; A63B21/015; A63B21/00058; A63B21/00069; A63B21/02; A63B21/045; A63B21/0455; A63B21/40; A63B21/4041; A63B21/4049; A63B21/026; A63B21/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
149 words
A rotary motion exerciser device, comprising: a portable platform upon which a subject using the device stands; a vertically disposed resistance unit mounted centrally on said platform, and including a vertical shaft rotatable in either direction about the vertical axis thereof; a T-shaped handle, said handle including a straight, generally vertically disposed center leg aligned with the vertical axis of and connected at its lower end to said shaft of said resistance unit, and a generally horizontal straight cross bar attached to the upper end of said center leg; and means on said resistance unit for fixing said vertical shaft in a vertical orientation with respect to the platform so that said shaft cannot be moved out of said vertical orientation during the rotation of said shaft by said T-shaped handle by a person standing upon said platform and gripping and manipulating the opposite ends of said cross bar.
Claim 2
Dependent Claim
149 words
A rotary motion exerciser device, comprising: a portable platform upon which a subject using the device stands; a vertically disposed resistance unit mounted centrally on said platform, and including a vertical shaft rotatable in either direction about the vertical axis thereof; a T-shaped handle, said handle including a straight, generally vertically disposed center leg aligned with the vertical axis of and connected at its lower end to said shaft of said resistance unit, and a generally horizontal straight cross bar attached to the upper end of said center leg; and means on said resistance unit for fixing said vertical shaft in a vertical orientation with respect to the platform so that said shaft cannot be moved out of said vertical orientation during the rotation of said shaft by said T-shaped handle by a person standing upon said platform and gripping and manipulating the opposite ends of said cross bar.
Claim 3
Dependent Claim
24 words
A rotary motion exerciser device as recited in claim 1, wherein said center leg of said handle is adjustable in height above the platform.
Claim 4
Dependent Claim
31 words
A rotary motion exerciser device as recited in claim 1, wherein said resistance unit is adjustable, whereby the value of resistance torque generated against rotation of said handle can be adjusted.
Claim 5
Dependent Claim
18 words
A rotary motion exerciser device as recited in claim 3, wherein said resistance unit includes a friction resistance.
Claim 6
Dependent Claim
100 words
A rotary motion exerciser device as recited in claim 4, wherein said friction resistance comprises: a vertically disposed split cylinder, a portion of the circumference of the lower end of said split cylinder away from said split being secured to said platform; a rotor received within said split cylinder, said shaft connected to the lower end of said center leg of said handle being secured to said rotor; and adjustable means for tightening said split cylinder about said rotor, whereby the inner surface of said split cylinder grips the peripheral surface of said rotor with a selected degree of force.
Claim 7
Dependent Claim
41 words
A rotary motion exerciser device as recited in claim 5, wherein said adjustable tightening means includes a pair of abutting flanges on said split cylinder, located on opposite sides of the split therein; and an adjustment screw engaged with said flanges.
Claim 8
Dependent Claim
41 words
A rotary motion exerciser device as recited in claim 5, wherein said shaft extends through and projects downwardly from said rotor, and wherein said projecting lower shaft end is journaled in said platform to thereby limit lateral shifting of said rotor.
Claim 9
Dependent Claim
22 words
A rotory motion exerciser device as recited in claim 3, wherein said resistance unit utilizes a torsion bar to generate torque resistance.
Claim 10
Dependent Claim
159 words
A rotary motion exerciser device as recited in claim 8, wherein said shaft and said center leg of said T-shaped handle are integral, and wherein said resistance unit comprises: a vertical cylindrical housing secured at its lower end to said platform, and having at least one vertical slot therein; a retainer collar slidably received within said housing, said collar having a radial lug thereon slidably received in said vertical slot, and having a central opening therein; a torsion bar received within said housing and passing through said central opening in said collar, said torsion bar having a non-circular cross section, and said central opening conforming to said cross section whereby to prevent relative rotation between said collar and said bar; means for selectively securing said retainer collar at different heights within said vertical housing; and a retainer head engaged with the upper end of said torsion bar, said retainer head being secured to the lower end of said shaft.
Claim 11
Dependent Claim
50 words
A rotary motion exerciser device as recited in claim 9, wherein said means for selectively securing said retainer collar includes a pin, said collar having a radial bore therein to seat said pin, and said cylindricial housing having a plurality of vertically spaced bores therethrough to selectively receive said pin.
Claim 12
Dependent Claim
58 words
A rotary motion exerciser device as recited in claim 9, wherein said retainer head comprises: a bearing plate adapted to engage the upper end face of said cylindrical housing; and an anchor block having slot means therein conforming to the cross sectional configuration of said torsion bar, and adapted to receive the upper end portion of said bar.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |