Patent US3559757A successfully refreshed from Google Patents.
US3559757A
Expired / Lapsed
US
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Automobile theft prevention device
Assignee: TARODA IND Inc
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Filing: 1968-01-29
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Granted: 1971-02-02
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Expires: 1988-01-29
Abstract
Abstract In the primary circuit, which includes the coil and distributor points of an internal combustion engine, there is inserted a delayed action fuse in parallel with a manually operable switch. The fuse is of a capacity to blow with delay under the current normally present in the primary circuit. When the switch is open, the vehicle will operate for a delayed period before the fuse blows and disables the engine. With the switch closed, the engine may be operated whether or not the fuse is blown.
Inventors
- 👤 Hans R Weiss
- 👤 Joseph G Baran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:46
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/01; B60R25/04; B60R25/045; H; H01; H01H; H01H85/00; H01H85/54; H01H85/547
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
174 words
A theft protective device for use with a vehicle having an internal combustion engine with a source of electrical power, an ignition coil, a distributor and means forming a primary circuit from the battery through the coil and the distributor which circuit carries current of approximately a given amperage under normal vehicle operation, said device being adapted to be inserted in said means to form a part thereof and including: a delayed operating fuse and a switch in parallel with each other, said fuse being of a capacity to blow after approximately a given period of delay when said amperage is flowing therethrough to produce an open circuit therethrough, whereby with said switch open said vehicle may be started and run for approximately the delay period before the fuse will blow and thereby render the engine incapable of continued operation and with said switch closed the vehicle may be operated if the fuse is blown and the circuit through the switch will prevent the blowing of the fuse when the fuse has not blown.
Claim 2
Dependent Claim
174 words
A theft protective device for use with a vehicle having an internal combustion engine with a source of electrical power, an ignition coil, a distributor and means forming a primary circuit from the battery through the coil and the distributor which circuit carries current of approximately a given amperage under normal vehicle operation, said device being adapted to be inserted in said means to form a part thereof and including: a delayed operating fuse and a switch in parallel with each other, said fuse being of a capacity to blow after approximately a given period of delay when said amperage is flowing therethrough to produce an open circuit therethrough, whereby with said switch open said vehicle may be started and run for approximately the delay period before the fuse will blow and thereby render the engine incapable of continued operation and with said switch closed the vehicle may be operated if the fuse is blown and the circuit through the switch will prevent the blowing of the fuse when the fuse has not blown.
Claim 3
Dependent Claim
17 words
A device as set forth in claim 1, wherein said fuse is rated at about 1.5 amperes.
Claim 4
Dependent Claim
154 words
A device as set forth in claim 1, including a case adapted to be mounted at an inconspicuous position in said vehicle, said case having a hollow interior, a traveler mounted in said interior and removable therefrom, said traveler being movable between two positions in said case, a pair of fuse holders for said fuse mounted on the traveler and having electrical connections thereto at one side of the traveler, a bridging strap on a side of the traveler, and a pair of spaced connections at the interior of the case to which said means may be attached, the positioning of said connections and strap being such that in one of said traveler positions the two fuse holder connections are electrically connected to the pair of case connections respectively and in the other traveler position the strap electrically connects the pair of case connections to serve as said switch in the closed switch position.
Claim 5
Dependent Claim
45 words
A device as set forth in claim 3, including a releasable latch means interconnecting the case and the traveler to normally retain the traveler in the case and being manually operable to release said interconnection and permit the traveler to be removed from the case.
Claim 6
Dependent Claim
68 words
A device as set forth in claim 4, wherein said strap is on the same side of the holder as are said holder connections and extends from one of said holder connections toward the other holder connections, said case connections including a pair of electrically conductive spring arms on the interior of the case in juxtaposition to said holder connections and biased to be urged toward said traveler.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |