US4455020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable handhold for athletic equipment especially for barbells
Assignee: Individual
•
Filing: 1982-03-08
•
Granted: 1984-06-19
•
Expires: 2002-03-08
Abstract
Abstract A barbell has a pair of tube sections mounted on opposite axial ends of the bar and provided with elastic sleeves which permit relative rotation of the bar and the tube sections but, together with spring rings or shoulders, axially fix the tube sections on the bar.
Inventors
- 👤 Josef Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:41
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/06; A63B21/072; A63B21/0728; A63B21/40; A63B21/4001; A63B21/4017
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A barbell comprising: a weight-carrying bar; and respective tube sections fitted over opposite extremities of said bar and rotatable relative thereto, each tube section surrounding the respective bar extremity with clearance and having a pair of elastic sleeves in said clearance interposed between the tube section and the bar, means for axially fixing said tube section, said bar and at least one of said sleeves to limit relative axial displacement of each tube section and said bar while permitting relative rotation of the tube sections and the bar, and an integral portion of at least one sleeve of each tube section extending outwardly therefrom and over a flange formed by a ring welded on the tube section.
Claim 2
Dependent Claim
117 words
A barbell comprising: a weight-carrying bar; and respective tube sections fitted over opposite extremities of said bar and rotatable relative thereto, each tube section surrounding the respective bar extremity with clearance and having a pair of elastic sleeves in said clearance interposed between the tube section and the bar, means for axially fixing said tube section, said bar and at least one of said sleeves to limit relative axial displacement of each tube section and said bar while permitting relative rotation of the tube sections and the bar, and an integral portion of at least one sleeve of each tube section extending outwardly therefrom and over a flange formed by a ring welded on the tube section.
Claim 3
Dependent Claim
20 words
The barbell defined in claim 1 wherein the portion of the inner sleeve extending over said flange diverges frustoconically outwardly.
Claim 4
Dependent Claim
142 words
A barbell comprising: a weight carrying bar; and respective tube sections fitted over opposite extremities of said bar and rotatable relative thereto, each tube section surrounding the respective bar extremity with clearance and having a pair of elastic sleeves in said clearance interposed between the tube section and the bar, means for axially fixing said tube section, said bar and at least one of said sleeves to limit relative axial displacement of each tube section and said bar while permitting relative rotation of the tube sections and the bar, said means for axially fixing said one of said sleeves of each tube section includes respective grooves formed in the tube section and the bar, respective spring rings received in said grooves and forming shoulders in said clearance, and an axially effective spring between said one of said sleeves and said spring rings.
Claim 5
Dependent Claim
142 words
A barbell comprising: a weight carrying bar; and respective tube sections fitted over opposite extremities of said bar and rotatable relative thereto, each tube section surrounding the respective bar extremity with clearance and having a pair of elastic sleeves in said clearance interposed between the tube section and the bar, means for axially fixing said tube section, said bar and at least one of said sleeves to limit relative axial displacement of each tube section and said bar while permitting relative rotation of the tube sections and the bar, said means for axially fixing said one of said sleeves of each tube section includes respective grooves formed in the tube section and the bar, respective spring rings received in said grooves and forming shoulders in said clearance, and an axially effective spring between said one of said sleeves and said spring rings.
Claim 6
Dependent Claim
21 words
The barbell defined in claim 3, further comprising a washer between said one of said sleeves and the respective spring rings.
Claim 7
Dependent Claim
15 words
The barbell defined in claim 3 wherein said axially effective spring is a Belleville washer.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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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) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |