US3581609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock nut assembly and bolt and wrench for use therewith
Assignee: Individual
•
Filing: 1968-12-12
•
Granted: 1971-06-01
•
Expires: 1988-12-12
Abstract
Abstract A lock nut assembly including a nut having a threaded hole therein adapted for use with a bolt having a groove running at least part of the length of the thread thereon. The nut comprises a central recess which includes a plurality of inwardly extending serrations along a portion of the total depth of the recess. A lock ring having a plurality of serrations extending outwardly from the outer surface thereof is adapted to fit over the bolt and into the recess in the nut where the serrations on the lock ring mate with the serrations on the nut. The lock ring further includes an inwardly extending tongue which is positioned in the groove in the bolt so that the lock ring is axially moveable but not rotatable relative to the bolt, the nut being locked in place when the serrations thereon are in contact with the serrations on the lock ring. A special wrench is provided for separating the lock ring and nut so that the nut may be rotated relative to the bolt.
Inventors
- 👤 Eugene C Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:13
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/48; B25B13/02; B25B13/04; B25B13/485; F; F16; F16B; F16B39/00; F16B39/02; F16B39/10; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/926; Y10S411/948
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
168 words
An assembly, comprising: a lock nut having a threaded hole therein adapted for use with a bolt having at least one groove running at least part of the length of the thread thereon, said lock nut comprising: a recess aligned with the centerline of said nut and extending along a portion of the length of said nut, said recess including a plurality of inwardly extending serrations along a portion of the depth of said recess; and an annulus having a plurality of serrations extending outwardly from the outer surface thereof, said annulus adapted to fit over said bolt and into said recess in said nut, the serrations on said annulus mating with the serrations on said nut, said annulus further having at least one inwardly extending tongue adapted to extend into said groove in said bolt whereby said annulus is axially moveable but not rotatable relative to said bolt, said nut being locked in place when the serrations thereon are in contact with the serrations on said annulus.
Claim 2
Dependent Claim
168 words
An assembly, comprising: a lock nut having a threaded hole therein adapted for use with a bolt having at least one groove running at least part of the length of the thread thereon, said lock nut comprising: a recess aligned with the centerline of said nut and extending along a portion of the length of said nut, said recess including a plurality of inwardly extending serrations along a portion of the depth of said recess; and an annulus having a plurality of serrations extending outwardly from the outer surface thereof, said annulus adapted to fit over said bolt and into said recess in said nut, the serrations on said annulus mating with the serrations on said nut, said annulus further having at least one inwardly extending tongue adapted to extend into said groove in said bolt whereby said annulus is axially moveable but not rotatable relative to said bolt, said nut being locked in place when the serrations thereon are in contact with the serrations on said annulus.
Claim 3
Dependent Claim
14 words
An assembly according to claim 1 wherein said recess is generally cylindrical in shape.
Claim 4
Dependent Claim
28 words
An assembly according to claim 1 wherein the depth of the serrated portion of said recess is approximately equal to half of the total depth of said recess.
Claim 5
Dependent Claim
25 words
An assembly according to claim 3 wherein the thickness of said annulus is approximately equal to the depth of said serrated portion of said recess.
Claim 6
Dependent Claim
21 words
An assembly according to claim 1 further comprising: means for urging said annulus into engagement with said serrations on said nut.
Claim 7
Dependent Claim
21 words
An assembly according to claim 5 wherein said means is positioned in said recess between the base thereof and said annulus.
Claim 8
Dependent Claim
23 words
An assembly according to claim 5 wherein said means comprises: a spring positioned in said recess between the base thereof and said annulus.
Claim 9
Dependent Claim
48 words
An assembly according to claim 5 wherein said means comprises: a washer positioned in said recess between the base thereof and said annulus, the outer end of said washer being split to form a plurality of arms, said arms extending axially to form a plurality of leaf springs.
Claim 10
Dependent Claim
18 words
An assembly according to claim 5 further comprising: means for prohibiting removal of said annulus from said recess.
Claim 11
Dependent Claim
29 words
An assembly according to claim 5 further comprising: a wrench adapted to engage said nut, said wrench including means for disengaging said serrations on said annulus and said nut.
Claim 12
Dependent Claim
24 words
An assembly according to claim 10 wherein said disengaging means comprises: means for forcing said annulus axially into the unserrated portion of said recess.
Claim 13
Dependent Claim
57 words
An assembly according to claim 10 wherein said wrench comprises: a head portion adapted to fit over and engage the outer surface of said nut; and a generally cylindrical ring supported wIthin said head, said ring adapted to fit over said bolt and to contact and force said annulus axially into the unserrated portion of said recess.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |