US3975645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile anti-theft alarm system
Assignee: Lee Raymond Organization Inc
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Filing: 1974-11-20
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Granted: 1976-08-17
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Expires: 1994-11-20
Abstract
Abstract An anti-theft alarm system employing a timer having a normally closed timer switch which opens automatically within a selected time interval after the timer is energized, a normally deenergized relay having a winding and a set of normally open contacts, an ignition switch, an electrically operated alarm, plurality of trigger switches connected in parallel which are normally open and a battery. First means connect the main switch, timer switch, trigger switch and winding in series across the battery; second means connect said main switch, the alarm and the set of contacts in series across the battery; and the timer is connected in parallel with the winding of the relay.
Inventors
- 👤 Michael A. Morar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:20
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/10; B60R25/1004; B60R25/1006; B60R25/1007
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
251 words
An automobile anti-theft alarm system comprising: a battery connected at one end to ground; a main switch connected on one side to the other end of the battery; a relay having a normally deenergized winding with one end grounded, said relay having a first set of normally open contacts connected on one side to the other end of the winding and a second set of normally open contacts grounded on one side; a timer which can be reset and which is normally deenergized, said timer having a normally closed timer switch, said timer being connected in parallel with the winding, said timer switch being connected between the other side of the main switch and the other side of the first set contacts; an electrically operated alarm connected between the other side of the main switch and the other side of the second set contacts; and a plurality of normally open trigger switches connected in parallel and disposed between the other end of the winding and the junction of the first set contacts and the timer relay, two of said trigger switches being elongated mercury tilt switches that are open when level and closed when tilted from the horizontal in the vertical direction, the longitudinal axes of the tilt switches being disposed at right angles to each other, the tilt switches being used to detect any movement or change in position of the automobile by closing when any movement or change occurs, said alarm being actuated whenever any trigger switch is closed.
Claim 2
Dependent Claim
251 words
An automobile anti-theft alarm system comprising: a battery connected at one end to ground; a main switch connected on one side to the other end of the battery; a relay having a normally deenergized winding with one end grounded, said relay having a first set of normally open contacts connected on one side to the other end of the winding and a second set of normally open contacts grounded on one side; a timer which can be reset and which is normally deenergized, said timer having a normally closed timer switch, said timer being connected in parallel with the winding, said timer switch being connected between the other side of the main switch and the other side of the first set contacts; an electrically operated alarm connected between the other side of the main switch and the other side of the second set contacts; and a plurality of normally open trigger switches connected in parallel and disposed between the other end of the winding and the junction of the first set contacts and the timer relay, two of said trigger switches being elongated mercury tilt switches that are open when level and closed when tilted from the horizontal in the vertical direction, the longitudinal axes of the tilt switches being disposed at right angles to each other, the tilt switches being used to detect any movement or change in position of the automobile by closing when any movement or change occurs, said alarm being actuated whenever any trigger switch is closed.
Claim 3
Dependent Claim
48 words
The system of claim 1 which is adapted for use in an automobile having a plurality of doors, all trigger switches other than the tilt switches being spring loaded, each spring loaded switch being associated with a corresponding door and being closed when the corresponding door is opened.
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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |