US3935631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of seating a bearing
Assignee: Leggett and Platt Canada Holdings Ltd
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Filing: 1975-03-19
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Granted: 1976-02-03
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Expires: 1995-03-19
Abstract
Abstract This invention discloses a novel and improved method of seating a bearing, especially for use in chair controls for tiltable chairs. A multi-pointed star-shaped hole is cut in the support and a bearing, preferably made of nylon, which has a series of circular rings on its periphery, each ring diminishing in diameter, is placed in the hole as far as it will go. The bearing is then fused into the hole and the hole cuts the bearing so that shavings are forced into the undercut part of the next largest ring. This provides a secure and tight fitting bearing and removes any necessity for bearings to be made of exact tolerances. The process may also be subject to a fully automated process at a greatly reduced cost.
Inventors
- 👤 Frank Doerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:57
CPC Classifications
B; B23; B23P; B23P11/00; F; F16; F16C; F16C35/00; F16C35/02; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/908; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49835; Y10T29/49945
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
199 words
A method of seating a bearing in a support, said support containing therein a star-shaped hole, said bearing carrying on its periphery at least three rings of diminishing diameter, the diameter of the largest ring being greater than the diameter of said hole, the diameter of the second ring being marginally larger than the diameter of said hole, the diameter of the subsequent rings being smaller than the diameter of the hole, the largest ring being undercut marginally at the point of juncture with the bearing and the adjacent ring, comprising: inserting the bearing into the hole commencing with its smallest ring until the diameter of the bearing containing the next ring to be inserted is the portion of the bearing carrying the ring having a marginally larger diameter than the diameter of the hole, forcing said portion of the bearing having a marginally larger diameter than said hole through said hole whereby said ring having a marginally larger diameter than the diameter of the hole is cut by said star-shaped hole in a corresponding star-shaped pattern and the shavings are collected in said undercut portion of said largest ring, whereby said bearing is seated securely in said hole.
Claim 2
Independent Claim
199 words
A method of seating a bearing in a support, said support containing therein a star-shaped hole, said bearing carrying on its periphery at least three rings of diminishing diameter, the diameter of the largest ring being greater than the diameter of said hole, the diameter of the second ring being marginally larger than the diameter of said hole, the diameter of the subsequent rings being smaller than the diameter of the hole, the largest ring being undercut marginally at the point of juncture with the bearing and the adjacent ring, comprising: inserting the bearing into the hole commencing with its smallest ring until the diameter of the bearing containing the next ring to be inserted is the portion of the bearing carrying the ring having a marginally larger diameter than the diameter of the hole, forcing said portion of the bearing having a marginally larger diameter than said hole through said hole whereby said ring having a marginally larger diameter than the diameter of the hole is cut by said star-shaped hole in a corresponding star-shaped pattern and the shavings are collected in said undercut portion of said largest ring, whereby said bearing is seated securely in said hole.
Claim 3
Dependent Claim
20 words
A method of seating a bearing as claimed in claim 1 wherein said star-shaped hole is an eight-pointed star-shaped hole.
Claim 4
Dependent Claim
12 words
A method as claimed in claim 1 wherein said bearing is nylon.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |