Patent US3842878A successfully refreshed from Google Patents.
US3842878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread locking means
Assignee: Individual
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Filing: 1973-05-10
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Granted: 1974-10-22
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Expires: 1993-05-10
Abstract
Abstract A one piece lock nut having a body defining an internal thread extending throughout the length thereof, the body also having an externally threaded portion and a relatively thin walled, integral, deformable locking portion at one end thereof, the locking portion being deformed by a tool mating with the external thread after the nut is in mating, threaded, seated position on a complementary threaded bolt.
Inventors
- 👤 M Duer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:13
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
A lock nut comprising a metalliC body member, an integral lock portion formed at one end of said body member, said lock portion having outside dimensions less than the corresponding outside dimensions of said body member, said body member and lock portion defining a bore provided with an internal thread extending throughout the length of said body member and said lock portion and adapted to be applied to a mating threaded member, and an externally threaded portion on said body member having an external thread extending throughout the length of said body member, said internal thread being of one helix angle and said external thread being of a larger helix angle, said external thread being adapted to receive an internally threaded tool member effective to deform said lock portion of said nut beyond the elastic limit thereof so as to reduce permanently the pitch diameter of said internal thread in said lock portion of said nut upon rotation of said tool member relative to said lock nut.
Claim 2
Dependent Claim
167 words
A lock nut comprising a metalliC body member, an integral lock portion formed at one end of said body member, said lock portion having outside dimensions less than the corresponding outside dimensions of said body member, said body member and lock portion defining a bore provided with an internal thread extending throughout the length of said body member and said lock portion and adapted to be applied to a mating threaded member, and an externally threaded portion on said body member having an external thread extending throughout the length of said body member, said internal thread being of one helix angle and said external thread being of a larger helix angle, said external thread being adapted to receive an internally threaded tool member effective to deform said lock portion of said nut beyond the elastic limit thereof so as to reduce permanently the pitch diameter of said internal thread in said lock portion of said nut upon rotation of said tool member relative to said lock nut.
Claim 3
Dependent Claim
27 words
A lock nut according to claim 1 in which said externally threaded portion on said body member has a plurality of faces adapted to receive a wrench.
Claim 4
Dependent Claim
21 words
A lock nut according to claim 1 in which said externally threaded portion on said body is substantially circular in cross-section.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |