Patent US4236439A successfully refreshed from Google Patents.
US4236439A
Expired / Lapsed
US
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Lockable pin
Assignee: Sanyo Kiki Co Ltd
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Filing: 1978-08-11
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Granted: 1980-12-02
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Expires: 1998-08-11
Abstract
Abstract A lockable pin comprises a ring-like locking element which is cut at a place on the circumference to provide free ends at which it is pivotally attached to the pin body. In use, the pin is inserted in a throughgoing hole formed in a shaft end and the locking element is brought into engagement with a recess formed in the front end of the pin body or with an annular groove formed in the shaft end. The locking element is firmly held in the recess or groove by the elasticity of the locking element itself or by an upward elastic force acting on the pin body.
Inventors
- 👤 Kishio Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:01
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/12; Y; Y10; Y10T; Y10T403/00; Y10T403/59; Y10T403/598; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A lockable pin comprising a pin body having a head portion fixedly connected to a stem portion at an upper portion thereof, said stem portion being insertable through a transverse bore formed in a shaft to be locked, an elastic member disposed around said stem portion and having one end thereof fixed to said upper portion of said stem portion of said pin body, and a locking element pivotally attached to said head portion, the arrangement being such that by depressing said pin body as a whole against the elastic force of said elastic member with said elastic member between said head portion and an outer peripheral surface of said shaft, the locking element is directly fitted in an annular groove formed in said shaft at its end.
Claim 2
Dependent Claim
128 words
A lockable pin comprising a pin body having a head portion fixedly connected to a stem portion at an upper portion thereof, said stem portion being insertable through a transverse bore formed in a shaft to be locked, an elastic member disposed around said stem portion and having one end thereof fixed to said upper portion of said stem portion of said pin body, and a locking element pivotally attached to said head portion, the arrangement being such that by depressing said pin body as a whole against the elastic force of said elastic member with said elastic member between said head portion and an outer peripheral surface of said shaft, the locking element is directly fitted in an annular groove formed in said shaft at its end.
References Cited (Backward Citations)
US148421A
Cited
US2158116A
Cited
US2759388A
Cited
US2856806A
Cited
US3926089A
Cited
US3963361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |