US3696646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nut lock
Assignee: Individual
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Filing: 1970-12-16
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Granted: 1972-10-10
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Expires: 1990-12-16
Abstract
Abstract A locking device for locking a nut onto its bolt to resist unwanted removal of the nut, comprising a locking base and a securable cover for the locking base. The locking base is secured by the nut and the cover encloses the nut and is joined to the locking base by a tongue and groove joint. A locking bolt operated by a lock cylinder secures the cover to the base. Vshaped projections angled toward the nut on the inside of the cover cut and jam the nut onto the bolt under extraordinary force such as a hammer blow.
Inventors
- 👤 Nicholas R Loscalzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:11
CPC Classifications
F; F16; F16B; F16B41/00; F16B41/005; Y; Y10; Y10T; Y10T70/00; Y10T70/20; Y10T70/50; Y10T70/5611; Y10T70/5854; Y10T70/5867; Y10T70/70; Y10T70/7441; Y10T70/778; Y10T70/7791; Y10T70/7876; Y10T70/7915; Y10T70/7932
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
A nut lock for securing a nut onto its bolt, comprising: a. a base, said base being provided with a plate for securement by the nut onto the bolt, and a tongue upstanding from said plate; b. a cover, said cover having a groove defined by an end wall thereof adapted to slidably mate with said tongue, said cover being provided with internal chisels; and c. locking means to lock said cover to said base, comprising: i. a tongue aperture defined in said tongue, said tongue aperture being disposed at an angle with respect to the plane of said plate; ii. a groove aperture defined in said end wall containing said groove, said groove aperture being disposed at an angle corresponding to that of said tongue aperture and forming a linear extension thereof; and iii. a lock having an extendible bolt, said bolt being extendible and retractable in said tongue aperture and said groove aperture to lock said cover to said base.
Claim 2
Dependent Claim
162 words
A nut lock for securing a nut onto its bolt, comprising: a. a base, said base being provided with a plate for securement by the nut onto the bolt, and a tongue upstanding from said plate; b. a cover, said cover having a groove defined by an end wall thereof adapted to slidably mate with said tongue, said cover being provided with internal chisels; and c. locking means to lock said cover to said base, comprising: i. a tongue aperture defined in said tongue, said tongue aperture being disposed at an angle with respect to the plane of said plate; ii. a groove aperture defined in said end wall containing said groove, said groove aperture being disposed at an angle corresponding to that of said tongue aperture and forming a linear extension thereof; and iii. a lock having an extendible bolt, said bolt being extendible and retractable in said tongue aperture and said groove aperture to lock said cover to said base.
Claim 3
Dependent Claim
26 words
A nut lock for securing a nut onto its bolt in accordance with claim 1, wherein: said chisels comprise a lattice of extended wedge shaped members.
Claim 4
Dependent Claim
37 words
A nut lock for securing a nut onto its bolt in accordance with claim 1, wherein: said chisels are angularly disposed with respect to the plane of said plate, when said cover is mounted on said base.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |