US5528086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor vehicle anti-theft device which blocks starting of the engine
Assignee: Mercedes Benz Group AG
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Filing: 1995-02-23
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Granted: 1996-06-18
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Expires: 2015-02-23
Abstract
Abstract The invention provides a motor vehicle anti-theft system in which an authorization code, representing the access authorization, is transmitted via the vehicle starting line arranged downstream from the ignition switch, to a start release unit. A control unit for the engine start, previously in an engine-start-blocking condition, is thereby placed into a release condition, in which it transmits a start request (arriving from the starting line) to the starter motor. By using the starting line for transmitting the authorization code, it is achieved that the latter is coupled through a connection which is necessary for the start, and therefore cannot fail separately.
Inventors
- 👤 Manfred Maass
- 👤 Martin Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:41
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/01; B60R25/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
Motor vehicle anti-theft arrangement for blocking the starting of the engine, of the type having a user-code-specifically addressable system for generating an engine start release signal, and a control unit which, upon receipt of the start release signal, changes from an engine-start-blocking condition to an engine-start-releasing condition, wherein: a starting line originating from an ignition starting switch is coupled in communication with the user-code-specifically addressable system and transmits the start release signal generated by said system; and an input to the control unit is connected to the starting line, said control unit distinguishes between a start release signal and a start request signal generated by the closing of the ignition starting switch, and to activate an engine start only when said control unit is in the engine-start-releasing condition and receives a start request signal.
Claim 2
Dependent Claim
134 words
Motor vehicle anti-theft arrangement for blocking the starting of the engine, of the type having a user-code-specifically addressable system for generating an engine start release signal, and a control unit which, upon receipt of the start release signal, changes from an engine-start-blocking condition to an engine-start-releasing condition, wherein: a starting line originating from an ignition starting switch is coupled in communication with the user-code-specifically addressable system and transmits the start release signal generated by said system; and an input to the control unit is connected to the starting line, said control unit distinguishes between a start release signal and a start request signal generated by the closing of the ignition starting switch, and to activate an engine start only when said control unit is in the engine-start-releasing condition and receives a start request signal.
Claim 3
Dependent Claim
88 words
Motor vehicle according to claim 1, wherein: the control unit is included in a vehicle electronic engine control system which also comprises a start release unit, said control unit and said start release unit each having an input connected to the starting line; the start release unit changes the control unit from an engine-start-blocking condition to the engine-start-releasing condition upon receipt of the start release signal; and the control unit emits an engine-start-activating signal only when it is in the engine-start-releasing condition and receives a start request signal.
Claim 4
Dependent Claim
26 words
Motor vehicle according to claim 1, wherein the user-code-specifically addressable system comprises a vehicle anti-theft system which can be activated by means of a coded key.
Claim 5
Dependent Claim
26 words
Motor vehicle according to claim 2, wherein the user-code-specifically addressable system comprises a vehicle anti-theft system which can be activated by means of a coded key.
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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) | 1999-06-18 | 1999-12-18 | 2000-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-18 | 2003-12-18 | 2004-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-18 | 2007-12-18 | 2008-06-18 | $7700.00 | Window Closed / Lapsed |