Patent US3726522A successfully refreshed from Google Patents.
US3726522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination of a barbell with weight and collet device
Assignee: First National Bank of Chicago
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Filing: 1971-05-17
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Granted: 1973-04-10
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Expires: 1991-05-17
Abstract
Abstract A collet device is disclosed for securing barbell weights on a bar. The device includes an inner member and an outer member, and is attached to the bar by the frictional engagement of the inner member with the bar. The outer member progressively threadably engages the inner member and compresses a portion thereof against the bar. The device also includes keys for engaging the weights to prevent them from rotating relative to the bar.
Inventors
- 👤 I Silberman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/06; A63B21/072; A63B21/0728; Y; Y10; Y10T; Y10T403/00; Y10T403/53; Y10T403/535; Y10T403/70; Y10T403/7018; Y10T403/7021
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
225 words
In a barbell, the combination comprising a bar, at least one weight adapted to fit on said bar, and a collet device for securing said weight on said bar; the improvement wherein said collet device comprises; a first means for lockably attaching the weight to the bar, said first means telescoping on the bar and said first means including an externally threaded portion and a compressible portion at the other end and having at least one longitudinally extending slot therein; a second means telescoping over the bar for compressibly engaging said compressible portion of said first means, said second means including an internally threaded portion threadably engaging said externally threaded portion and said second means having at one end a portion compressible engaging said compressible portion, at least one of said compressible and compressing portions having a tapered surface engageable with the other of said compressible and compressing portions so that when said threaded portions progressively are engaged, said compressing portion progressively engages said compressible portion and said compressible portion is compressed against said bar; and a third means affixed to said first means and engaging said weight for prevent the weight from rotating relative to said bar, said third means extending longitudinally from the end opposite the end with the compressible portion of said first means and keyed to the weight on the bar.
Claim 2
Dependent Claim
225 words
In a barbell, the combination comprising a bar, at least one weight adapted to fit on said bar, and a collet device for securing said weight on said bar; the improvement wherein said collet device comprises; a first means for lockably attaching the weight to the bar, said first means telescoping on the bar and said first means including an externally threaded portion and a compressible portion at the other end and having at least one longitudinally extending slot therein; a second means telescoping over the bar for compressibly engaging said compressible portion of said first means, said second means including an internally threaded portion threadably engaging said externally threaded portion and said second means having at one end a portion compressible engaging said compressible portion, at least one of said compressible and compressing portions having a tapered surface engageable with the other of said compressible and compressing portions so that when said threaded portions progressively are engaged, said compressing portion progressively engages said compressible portion and said compressible portion is compressed against said bar; and a third means affixed to said first means and engaging said weight for prevent the weight from rotating relative to said bar, said third means extending longitudinally from the end opposite the end with the compressible portion of said first means and keyed to the weight on the bar.
Claim 3
Dependent Claim
12 words
A barbell as recited in claim 1, wherein said bar is demountable.
Claim 4
Dependent Claim
39 words
A barbell as recited in claim 2, wherein said bar comprises a central tube, a pair of end bars telescopingly receivable in the ends of said tube, and means for securing each of said end bars to said tube.
Claim 5
Dependent Claim
44 words
A barbell as recited in claim 3, wherein said means for securing said end bars comprises a collar adapted to fit around said central tube and a set-screw insertable through said collar and said central tube and engageable with oNe of said end bars.
Claim 6
Dependent Claim
53 words
A barbell as recited in claim 3, wherein said securing means comprises at least one longitudinally extending slot in an end of said central tube, an externally threaded portion formed on said tube end and a nut engageable with said threaded portion for compressing said tube end against one of said end bars.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |