Patent US3798749A successfully refreshed from Google Patents.
US3798749A
Expired / Lapsed
US
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Method and tool for effecting a thread lock
Assignee: Individual
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Filing: 1971-10-21
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Granted: 1974-03-26
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Expires: 1991-10-21
Abstract
Abstract A tool for assembling a lock nut to a complementary male threaded member which tool rotates the lock nut to a seated position relative to the work and moves axially relative to the nut to deform a lock portion of the nut relative to the thread of the complementary threaded member or which may deform both the lock portion and the thread on the complementary threaded member.
Inventors
- 👤 M Duer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:08
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/001; B25B13/00; B25B13/48; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
A tool for applying a lock nut, said tool comprising a body member having an internally threaded bore portion at one end thereof, means adapted to receive a torque appling member at the other end thereof, said internally threaded portion of said body member being adapted to receive a complementary external thread on a lock nut having its internal thread engaged with a bolt member, said body member defining a recess adjacent said one end thereof, a spring element supported in said recess for releasably holding a lock nut in the internally threaded bore portion of said body member, and a plurality of circumferentially disposed die elements intermediate said internally threaded portion and said other end, said die elements being adapted to engage a peripheral surface of a lock nut and distort the latter upon axial movement of said tool relative to said lock nut during rotation of said tool relative to said lock nut.
Claim 2
Dependent Claim
155 words
A tool for applying a lock nut, said tool comprising a body member having an internally threaded bore portion at one end thereof, means adapted to receive a torque appling member at the other end thereof, said internally threaded portion of said body member being adapted to receive a complementary external thread on a lock nut having its internal thread engaged with a bolt member, said body member defining a recess adjacent said one end thereof, a spring element supported in said recess for releasably holding a lock nut in the internally threaded bore portion of said body member, and a plurality of circumferentially disposed die elements intermediate said internally threaded portion and said other end, said die elements being adapted to engage a peripheral surface of a lock nut and distort the latter upon axial movement of said tool relative to said lock nut during rotation of said tool relative to said lock nut.
Claim 3
Dependent Claim
139 words
In the method of applying a lock nut having internal and external threads with different helix angles to a bolt having an external thread complementary to the internal thread in said lock nut, the steps comprising: positioning an internally threaded tool member on the complementary external thread of said lock nut, releasably holding said lock nut relative to said tool member, rotating said tool member and said nut simultaneously relative to a bolt until said nut engages the surface of the work to be assembled and resists rotation of said nut, rotating said tool member relative to said nut to move said tool member axially of said nut so that said tool member engages a peripheral portion of said nut and permanently distorts the latter into engagement with the bolt, and thereafter removing said tool member from said nut.
Claim 4
Dependent Claim
139 words
In the method of applying a lock nut having internal and external threads with different helix angles to a bolt having an external thread complementary to the internal thread in said lock nut, the steps comprising: positioning an internally threaded tool member on the complementary external thread of said lock nut, releasably holding said lock nut relative to said tool member, rotating said tool member and said nut simultaneously relative to a bolt until said nut engages the surface of the work to be assembled and resists rotation of said nut, rotating said tool member relative to said nut to move said tool member axially of said nut so that said tool member engages a peripheral portion of said nut and permanently distorts the latter into engagement with the bolt, and thereafter removing said tool member from said nut.
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |