Patent US4137521A successfully refreshed from Google Patents.
US4137521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna alarm
Assignee: Individual
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Filing: 1977-02-09
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Granted: 1979-01-30
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Expires: 1997-02-09
Abstract
Abstract A system is provided for automatically actuating an alarm whenever a would-be thief attempts to remove the antenna from a vehicle equipped with a C.B. radio or other communication system. The preferred embodiment includes a hidden switch which remains depressed by the antenna until it is partially unscrewed, at which time the switch closes the alarm circuit. For example, the horn of the vehicle may be connected to the switch and serve as the alarm.
Inventors
- 👤 Roberto Martinez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:30
CPC Classifications
B; B60; B60Q; B60Q5/00; B60Q7/00; G; G08; G08B; G08B13/00; G08B13/02; G08B13/14; G08B13/149
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
An antenna and support assembly, comprising; (a) an antenna; said antenna including a loading coil; (b) a screw-threaded base member adapted to receive said loading coil; (c) a screw-threaded stud member in combination with a base plate, said stud member being adapted to receive said base member; (d) a push-button switch mounted in combination with said base plate, the button thereof being located in an upright position at a distance from said stud sufficient to clear the lower edge of said base member when the latter is screwed in place, but at least partly within the radius of the bottom of the loading coil, whereby said button is depressed by the bottom of the loading coil when the latter is screwed in place; and (e) a remote alarm signal generating means electrically coupled to said switch, whereby removal of said antenna turns on the alarm signal.
Claim 2
Dependent Claim
146 words
An antenna and support assembly, comprising; (a) an antenna; said antenna including a loading coil; (b) a screw-threaded base member adapted to receive said loading coil; (c) a screw-threaded stud member in combination with a base plate, said stud member being adapted to receive said base member; (d) a push-button switch mounted in combination with said base plate, the button thereof being located in an upright position at a distance from said stud sufficient to clear the lower edge of said base member when the latter is screwed in place, but at least partly within the radius of the bottom of the loading coil, whereby said button is depressed by the bottom of the loading coil when the latter is screwed in place; and (e) a remote alarm signal generating means electrically coupled to said switch, whereby removal of said antenna turns on the alarm signal.
Claim 3
Dependent Claim
32 words
A system as in claim 1 wherein the antenna is for a mobile radio unit and the alarm signal generating means is the horn of the vehicle wherein the radio is located.
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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |