Patent US4358941A successfully refreshed from Google Patents.
US4358941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security method and apparatus
Assignee: Individual
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Filing: 1980-10-20
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Granted: 1982-11-16
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Expires: 2000-10-20
Abstract
Abstract Disclosed is a security device and method. The device includes a bolt having a first hole drilled radially therein, a second threaded hole drilled axially therein to intersect the first hole, and a third hole formed axially therein connecting the second hole with the end of the bolt. A bar is insertable into the first hole to extend radially outside the bolt thereby to prevent a nut from being removed from the bolt. The bar is secured in the bolt by means of a pick-proof lock that has a screw portion threadably engagable with the second hole to engage the bar, and a lock body configured to fit the third hole.
Inventors
- 👤 John C. Zimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:45
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/36; F; F16; F16B; F16B41/00; F16B41/005; Y; Y10; Y10S; Y10S411/00; Y10S411/91; Y10T; Y10T292/00; Y10T292/51; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/439; Y10T70/50; Y10T70/5611; Y10T70/5854; Y10T70/5858; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7661
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A security device, which comprises: a cylindrical bolt having formed therein a radial first hole substantially perpendicular to the axis of said bolt, a threaded second hole formed coaxial with said bolt and intersecting said first hole, and a third hole formed coaxial with said second hole and connecting said second hole with the end of said bolt, said third hole having a flat side; a nut threadably engageable with said bolt; a bar insertable into said first hole, said bar having a length long enough such that an end thereof extends radially outside said bolt when said bar is inserted in said first hole, said bar having a notch therein alignable with said second hole when said bar is inserted in said first hole; and a key-operable pick-resistant lock including a lock body conformed to fit said third hole and a key-operable screw engageable with said second hole, said screw including key-releasable lock structures and being adapted to screw into said second hole to engage said notch of said bar.
Claim 2
Dependent Claim
171 words
A security device, which comprises: a cylindrical bolt having formed therein a radial first hole substantially perpendicular to the axis of said bolt, a threaded second hole formed coaxial with said bolt and intersecting said first hole, and a third hole formed coaxial with said second hole and connecting said second hole with the end of said bolt, said third hole having a flat side; a nut threadably engageable with said bolt; a bar insertable into said first hole, said bar having a length long enough such that an end thereof extends radially outside said bolt when said bar is inserted in said first hole, said bar having a notch therein alignable with said second hole when said bar is inserted in said first hole; and a key-operable pick-resistant lock including a lock body conformed to fit said third hole and a key-operable screw engageable with said second hole, said screw including key-releasable lock structures and being adapted to screw into said second hole to engage said notch of said bar.
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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) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |