US3705612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking of car radios and the like
Assignee: Individual
•
Filing: 1970-03-31
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Granted: 1972-12-12
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Expires: 1990-03-31
Abstract
Abstract The invention is directed to the lockingly securing of a radio receiver or the like in a motor vehicle to prevent the easy removal and theft. The lockingly fixing of a radio includes coacting biassed elements and formations at a concealed and inaccessible position between a fixed member and a nut whereby tightening of the nut is permitted while loosening rotational movement is blocked. The co-acting means comprise resiliently biassed detent means and shoulder forming openings. Loosing of the nut being possible only by drilling away portions of the nut at particular positions.
Inventors
- 👤 Erasmus Smit Comley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:05
CPC Classifications
B; B60; B60R; B60R11/00; B60R11/02; B60K; B60K35/00; B60K35/50; B60K37/00; B60R11/0205; F; F16; F16B; F16B39/00; F16B39/22; B60R2011/0001; B60R2011/0003; B60R2011/0005; B60R2011/0042; B60R2011/0043; B60R2011/0045; B60R2011/0047; B60R2011/0096; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/961
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
274 words
Means for lockingly fixing of apparatus onto a fixed part by engaging a fixed screw threaded member secured to and projecting from the apparatus after passing the threaded member through a complementary hole in the fixed part comprising a circular nut threaded on the screw threaded member having depressions therein opening inwardly, a washer on the screw threaded member resiliently biased between said nut and the fixed part, and a trim plate between said washer and the fixed part, fixable to the fixed part and having a hole for the screw threaded member of the apparatus and circular cavities adjacent said hole forming shoulder formations, said washer including leaf spring-like tongues having a horseshoe shaped spacing and clearance between unattached edges of said leaf spring-like tongues and the material of said washer, forming the free end of said tongues and projecting from said washer into said depressions of said nut in a direction to lockingly engage said nut against rotation in a direction for loosening whiLe permitting rotation of said nut in a direction for tightening, holding elements in the form of hook shaped projections extending from the opposed face of said washer at positions spaced from the inner and outer edges of said washer and having laterally extending terminal portions projecting into said cavities of said trim plate and underlying said shoulder formations to lockingly engage said washer in said trim plate to combine with said nut to prevent rotation in a direction for loosening while permitting rotation of said nut in a direction for tightening, said terminal portions extending in an opposite direction of rotation than the free end of said tongues.
Claim 2
Dependent Claim
274 words
Means for lockingly fixing of apparatus onto a fixed part by engaging a fixed screw threaded member secured to and projecting from the apparatus after passing the threaded member through a complementary hole in the fixed part comprising a circular nut threaded on the screw threaded member having depressions therein opening inwardly, a washer on the screw threaded member resiliently biased between said nut and the fixed part, and a trim plate between said washer and the fixed part, fixable to the fixed part and having a hole for the screw threaded member of the apparatus and circular cavities adjacent said hole forming shoulder formations, said washer including leaf spring-like tongues having a horseshoe shaped spacing and clearance between unattached edges of said leaf spring-like tongues and the material of said washer, forming the free end of said tongues and projecting from said washer into said depressions of said nut in a direction to lockingly engage said nut against rotation in a direction for loosening whiLe permitting rotation of said nut in a direction for tightening, holding elements in the form of hook shaped projections extending from the opposed face of said washer at positions spaced from the inner and outer edges of said washer and having laterally extending terminal portions projecting into said cavities of said trim plate and underlying said shoulder formations to lockingly engage said washer in said trim plate to combine with said nut to prevent rotation in a direction for loosening while permitting rotation of said nut in a direction for tightening, said terminal portions extending in an opposite direction of rotation than the free end of said tongues.
Claim 3
Dependent Claim
45 words
The means for lockingly fixing of apparatus onto a fixed part as claimed in claim 1 further characterized by said depressions in said nut being circularly shaped holes not extending through said nut of sufficient size to receive the unattached ends of said tongues therein.
Claim 4
Dependent Claim
41 words
The means for lockingly fixing of apparatus onto a fixed part as claimed in claim 1, further characterized by said nut being of thin material and having a rounded outer circular edge continuously curved through an arc not exceeding 90* .
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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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |