US3785644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pull type exercising device having with frictional resistance to pulling
Assignee: Individual
•
Filing: 1971-11-02
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Granted: 1974-01-15
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Expires: 1991-11-02
Abstract
Abstract An apparatus for physical exercising in which a bar assembly having a rotatable shaft with reels at opposite ends thereof is connected to a base by ropes or other types of lines wound on the reels. The shaft is enclosed in a tubular member in which it rotates, and hand grips on the tubular member are provided. Any gripping force exerted by a user on the hand grips will be transmitted to the tubular member and to the shaft to resist the force required to rotate the shaft, when the bar assembly is being lifted. The shaft is rotatable in the direction to wind the lines on the reels by a spring mechanism which consists of a cylindrical housing and the shaft about which a spring of strip metal is wound and attached, the spring being of a type which produces essentially its entire torque force at the area where it leaves the coil on the shaft, thereby providing a substantially constant force regardless of the amount of winding of the spring on the shaft.
Inventors
- 👤 R Bradley
- 👤 L Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:21
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/15; A63B21/151; A63B21/153; A63B21/012; A63B21/015; A63B2208/00; A63B2208/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
147 words
An apparatus for physical exercising, comprising a base for supporting the user of the apparatus, two spaced line anchoring means attached to said base, a bar assembly spaced from and generally parallel to said base, a freely rotatable, longitudinal shaft mounted in said bar assembly, a line supporting reel connected to each end of said shaft and rotatable therewith, a line fixedly connected to each of said means and to each of said reels, a hand grip on said bar assembly, means in said hand grip for transferring any manually exerted gripping force to said shaft so as to vary the amount of frictional resistance opposing the rotation of said shaft and thereby controlling the rate of rotation of said reels and said shaft when said bar assembly is being lifted by a user, and means attached to said shaft for rewinding the lines on said reels.
Claim 2
Independent Claim
147 words
An apparatus for physical exercising, comprising a base for supporting the user of the apparatus, two spaced line anchoring means attached to said base, a bar assembly spaced from and generally parallel to said base, a freely rotatable, longitudinal shaft mounted in said bar assembly, a line supporting reel connected to each end of said shaft and rotatable therewith, a line fixedly connected to each of said means and to each of said reels, a hand grip on said bar assembly, means in said hand grip for transferring any manually exerted gripping force to said shaft so as to vary the amount of frictional resistance opposing the rotation of said shaft and thereby controlling the rate of rotation of said reels and said shaft when said bar assembly is being lifted by a user, and means attached to said shaft for rewinding the lines on said reels.
Claim 3
Dependent Claim
32 words
An apparatus for physical exercising as defined in claim 1 wherein said apparatus includes a tubular member which surrounds the middle portion of said rotatable shaft and in which said shaft rotates.
Claim 4
Dependent Claim
21 words
An apparatus for physical exercising as defined in claim 2 in which said hand grips are mounted on said tubular member.
Claim 5
Dependent Claim
43 words
An apparatus for physical exercising as defined in claim 3 in which said means for for transferring a gripping force to the shaft consists of a member responsive to the gripping action of a user for applying a braking action to said shaft.
Claim 6
Dependent Claim
35 words
An apparatus for physical exercising as defined in claim 4 in which said reel at each end of said shaft includes a spiral groove for receiving said line as it is wound on the reel.
Claim 7
Dependent Claim
53 words
An apparatus for physical exercising as defined in claim 5 in which said rewinding means is connected at one end to said tubular member and at the other end to said shaft and is so constructed that said rewinding means has a substantially constant torque throughout the normal use of the bar assembly.
Claim 8
Dependent Claim
53 words
An apparatus for physical exercising as defined in claim 2 in which said rewinding means is connected at one end to said tubular member and at the other end to said shaft and is so constructed that said rewinding means has a substantially constant torque throughout the normal use of the bar assembly.
Claim 9
Dependent Claim
84 words
An apparatus for a physical exercising device as defined in claim 7 in which said rewinding means includes a cylindrical housing and having a radial wall supporting said housing on said tubular member, and said rewinding means includes a spring strip connected at one end to said shaft and at the other end to said cylindrical housing and being so constructed and designed that the force created by said strip is in the area at which said strip leaves the winding on said shaft.
Claim 10
Dependent Claim
35 words
An apparatus for physical exercising as defined in claim 1 in which said reel at each end of said shaft includes a spiral groove for receiving said line as it is wound on the reel.
Claim 11
Independent Claim
129 words
An apparatus for physical exercising, comprising a line, a base for supporting the user of the apparatus, a line holding means attached to said base for anchoring one end of said line, a bar assembly having a rotatable, longitudinal shaft, a reel means connected to said shaft and rotatable therewith for supporting said line, said line having its opposite end connected to said reel means, a hand grip on said bar assembly, and means operated by a user''s gripping said hand grip for frictionally resisting the rotation of said shaft by varying the amount of manually exerted force on said shaft during the unwinding of said reel means during lifting of said bar assembly, and said apparatus further including spring means for rewinding the line on said reel means.
Claim 12
Independent Claim
129 words
An apparatus for physical exercising, comprising a line, a base for supporting the user of the apparatus, a line holding means attached to said base for anchoring one end of said line, a bar assembly having a rotatable, longitudinal shaft, a reel means connected to said shaft and rotatable therewith for supporting said line, said line having its opposite end connected to said reel means, a hand grip on said bar assembly, and means operated by a user''s gripping said hand grip for frictionally resisting the rotation of said shaft by varying the amount of manually exerted force on said shaft during the unwinding of said reel means during lifting of said bar assembly, and said apparatus further including spring means for rewinding the line on said reel means.
Claim 13
Dependent Claim
24 words
An apparatus for physical exercising as defined in claim 10 in which the apparatus includes two lines interconnecting said base and said reel means.
Claim 14
Dependent Claim
31 words
An apparatus for physical exercising as defined in claim 10 in which a single line interconnects said base and reel means and two hand grips are included in said bar assembly.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |