Patent US4029426A successfully refreshed from Google Patents.
US4029426A
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Tubular fastening system
Assignee: Unisys Corp
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Filing: 1975-05-07
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Granted: 1977-06-14
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Expires: 1995-05-07
Abstract
Abstract A tubular fastening system for holding a plurality of members together with a predictable holding force, including a tubular eyelet of ductile but non-work hardening material pressed into a non-circular aperture formed in a rigid support plate. The predictable holding force of the tubular fastening system remains substantially constant upon attaining a predetermined radial pressure on the tubular eyelet at a significantly finite plurality of contact areas defined by the non-circular aperture in the support plate over a wide range of interference between the non-circular aperture and the tubular eyelet.
Inventors
- 👤 Dewey M. Sims, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:14
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/10; F16B5/00; F16B5/04; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/967; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49945; Y10T29/49947; Y10T403/00; Y10T403/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A fastening assembly for providing a readily predictable and substantially constant holding force comprising: a thin-walled, hollow, cylindrical eyelet with a flanged head, the eyelet being formed of ductile, yet non-work hardening metal; and a support member formed of a relatively rigid material and having formed therein an aperture with said eyelet received therein, the aperture being of such shape and dimension as to provide a plurality of discrete contact areas for the inserted eyelet in the aperture which interferingly contact the eyelet to create radial pressure sufficient to cause ductile yielding therein.
Claim 2
Dependent Claim
93 words
A fastening assembly for providing a readily predictable and substantially constant holding force comprising: a thin-walled, hollow, cylindrical eyelet with a flanged head, the eyelet being formed of ductile, yet non-work hardening metal; and a support member formed of a relatively rigid material and having formed therein an aperture with said eyelet received therein, the aperture being of such shape and dimension as to provide a plurality of discrete contact areas for the inserted eyelet in the aperture which interferingly contact the eyelet to create radial pressure sufficient to cause ductile yielding therein.
References Cited (Backward Citations)
US850299A
Cited
US1976776A
Cited
US2276050A
Cited
US2990465A
Cited
US3171196A
Cited
US3828422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |