US3874659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exercising machine
Assignee: Individual
•
Filing: 1973-04-30
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Granted: 1975-04-01
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Expires: 1993-04-30
Abstract
Abstract An exercising machine comprising two axially spaced reels, two cables respectively wound on the reels, an electric motor, and drive means including two axially spaced slip clutches respectively connecting the reels to the motor to apply constant tensions to the cables, the drive means including a common shaft interconnecting the clutches. The exercising machine also includes means for increasing, or decreasing, the resistances of both clutches to slippage, and further includes adjusting means for cyclically varying the resistances of the clutches to slippage by alternately increasing the resistance of one clutch and decreasing that of the other. The first adjusting means mentioned includes a sleeve encompassing a portion of the shaft between the clutches and having oppositely threaded portions, and nuts respectively threaded on such portions of the sleeve and respectively connected to the clutches, whereby resistances to slippage of both clutches can be increased or decreased by rotating the sleeve. The second adjusting means comprises a cam means on the shaft for reciprocating the sleeve axially of the shaft to alternately increase the resistance to slippage of one clutch and decrease that of the other.
Inventors
- 👤 Benjamin M Aharoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:44
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/15; A63B21/151; A63B21/153; A63B21/00058; A63B21/00069; A63B21/005; A63B21/0058; A63B21/012; A63B21/015; A63B21/157
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
In an exercising machine, the combination of: a. a reel; b. a cable wound on said reel; c. a motor; d. constant-cable-tension drive means, including a slip clutch connecting said reel to said motor, for causing said motor to apply a constant tension to said cable; and e. means for alternately increasing and decreasing the resistance of said slip clutch to slippage.
Claim 2
Dependent Claim
62 words
In an exercising machine, the combination of: a. a reel; b. a cable wound on said reel; c. a motor; d. constant-cable-tension drive means, including a slip clutch connecting said reel to said motor, for causing said motor to apply a constant tension to said cable; and e. means for alternately increasing and decreasing the resistance of said slip clutch to slippage.
Claim 3
Dependent Claim
136 words
In an exercising machine, the combination of: a. two axially spaced reels; b. two cables respectively wound on said reels; c. a motor; and d. constant-cable-tension drive means, including two axially spaced slip clutches respectively connecting said reels to said motor, for applying constant tensions to said cables; e. cable tension varying means for adjusting the resistances of said clutches to slippage; f. said drive means including a common shaft connecting said motor to said clutches; g. said slippage adjusting means including a sleeve encompassing a portion of said shaft between said clutches and having oppositely threaded portions; and h. said slippage adjusting means further including nuts respectively threaded on said portions of said sleeve and respectively connected to said clutches, whereby the resistances to slippage of said clutches can be adjusted by rotating said sleeve.
Claim 4
Dependent Claim
136 words
In an exercising machine, the combination of: a. two axially spaced reels; b. two cables respectively wound on said reels; c. a motor; and d. constant-cable-tension drive means, including two axially spaced slip clutches respectively connecting said reels to said motor, for applying constant tensions to said cables; e. cable tension varying means for adjusting the resistances of said clutches to slippage; f. said drive means including a common shaft connecting said motor to said clutches; g. said slippage adjusting means including a sleeve encompassing a portion of said shaft between said clutches and having oppositely threaded portions; and h. said slippage adjusting means further including nuts respectively threaded on said portions of said sleeve and respectively connected to said clutches, whereby the resistances to slippage of said clutches can be adjusted by rotating said sleeve.
Claim 5
Dependent Claim
56 words
An exercising machine as set forth in claim 2 including: a. a supporting structure; b. two cable guides spaced from said reels and through which said cables extend, respectively; and c. means for mounting said cable guides on said supporting structure in different positions to locate said cable guides in different positions relative to said reels.
Claim 6
Dependent Claim
81 words
In an exercising machine, the combination of: a. two axially spaced reels; b. two cables respectively wound on said reels; c. a motor; d. constant-cable-tension drive means, including two axially spaced slip clutches respectively connecting said reels to said motor, for applying constant tensions to said cables; e. cable tension varying means for adjusting the resistances of said clutches to slippage; and f. said slippage adjusting means including means for periodically increasing and decreasing the resistances of said clutches to slippage.
Claim 7
Dependent Claim
81 words
In an exercising machine, the combination of: a. two axially spaced reels; b. two cables respectively wound on said reels; c. a motor; d. constant-cable-tension drive means, including two axially spaced slip clutches respectively connecting said reels to said motor, for applying constant tensions to said cables; e. cable tension varying means for adjusting the resistances of said clutches to slippage; and f. said slippage adjusting means including means for periodically increasing and decreasing the resistances of said clutches to slippage.
Claim 8
Dependent Claim
33 words
An exercising machine as defined in claim 4 wherein said slippage adjusting means includes means for alternately increasing the resistance to slippage of one of said clutches and decreasing that of the other.
Claim 9
Dependent Claim
67 words
An exercising machine according to claim 5 wherein: a. said drive means includes a common shaft extending between said clutches and connecting said motor to said clutches; b. said slippage adjusting means includes a sleeve eNcompassing the portion of said shaft between said clutches and connected to said clutches; and c. said slippage adjusting means further including cam means for reciprocating said sleeve axially of said shaft.
Claim 10
Dependent Claim
36 words
An exercising machine as set forth in claim 6 wherein said cam means includes an annular cam on and encircling said shaft between said clutches and a cam follower on said sleeve and engaging said cam.
References Cited (Backward Citations)
US3387493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |