US3783207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering lock in motor vehicles
Assignee: Daimler Benz AG
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Filing: 1972-06-06
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Granted: 1974-01-01
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Expires: 1992-06-06
Abstract
Abstract A steering lock for a motor vehicle which includes a makecontact to actuate a warning installation when the ignition key is left inserted in the lock and a vehicle door is opened; the locking cylinder of the steering lock includes a mounting support made from insulating material which contains two opposite pins or spring-ring parts projecting into the path of the key but without contacting one another; the inner ends of the pins or spring-ring parts may be constructed ball-shaped, conical, or the like, and are in contact with their outer ends at a slip-ring that is connected with the warning installation.
Inventors
- 👤 G Schiesterl
- 👤 J Eibl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:29
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/01; B60R25/02; B60R25/021
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
188 words
A steering lock for motor vehicles having contact-making means for the actuation of a warning installation when a vehicle door is open and an ignition key is in the steering lock, the steering lock comprising a lock cylinder with a mounting means of insulating material containing two substantially oppositely disposed contact-making parts extending into the key path but failing to contact one another, said contact-making parts being in operative connection at the outer ends thereof elastically with a slip-ring means adapted to be connected with the warning installation, said ignition key including conducting portions to operatively connect said contact-making parts and portions of said lock cylinder which are in turn connected to the circuit ground, said slip ring means being embedded in an insulating ring of an outer cover cap of the lock cylinder, said mounting means being mounted on the lock cylinder by means of several recesses in the lock cylinder and corresponding pins, characterized in that the contact-making parts projecting into the key path form part of a ring provided at the circumference thereof with sliding spring means which establish a contact with the slip-ring means.
Claim 2
Dependent Claim
188 words
A steering lock for motor vehicles having contact-making means for the actuation of a warning installation when a vehicle door is open and an ignition key is in the steering lock, the steering lock comprising a lock cylinder with a mounting means of insulating material containing two substantially oppositely disposed contact-making parts extending into the key path but failing to contact one another, said contact-making parts being in operative connection at the outer ends thereof elastically with a slip-ring means adapted to be connected with the warning installation, said ignition key including conducting portions to operatively connect said contact-making parts and portions of said lock cylinder which are in turn connected to the circuit ground, said slip ring means being embedded in an insulating ring of an outer cover cap of the lock cylinder, said mounting means being mounted on the lock cylinder by means of several recesses in the lock cylinder and corresponding pins, characterized in that the contact-making parts projecting into the key path form part of a ring provided at the circumference thereof with sliding spring means which establish a contact with the slip-ring means.
Claim 3
Dependent Claim
152 words
A steering lock for motor vehicles having contact-making means for the actuation of a warning installation when a vehicle door is open and an ignition key is in the steering lock, the steering lock comprising a lock cylinder with a mounting means of insulating material containing two substantially oppositely disposed contact-making parts extending into the key path but failing to contact one another, said contact-making parts being in operative connection at the outer ends thereof elastically with a slip-ring means adapted to be connected with the warning installation, said ignition key including conducting portions to operatively connect said contact-making parts and portions of said lock cylinder which are in turn connected to the circuit ground, characterized in that a flat spring is provided which presses the two opposite disposed contact-making parts into the key path and is so constructed at its outer ends that it establishes a contact with the slip-ring means.
Claim 4
Dependent Claim
152 words
A steering lock for motor vehicles having contact-making means for the actuation of a warning installation when a vehicle door is open and an ignition key is in the steering lock, the steering lock comprising a lock cylinder with a mounting means of insulating material containing two substantially oppositely disposed contact-making parts extending into the key path but failing to contact one another, said contact-making parts being in operative connection at the outer ends thereof elastically with a slip-ring means adapted to be connected with the warning installation, said ignition key including conducting portions to operatively connect said contact-making parts and portions of said lock cylinder which are in turn connected to the circuit ground, characterized in that a flat spring is provided which presses the two opposite disposed contact-making parts into the key path and is so constructed at its outer ends that it establishes a contact with the slip-ring means.
Claim 5
Dependent Claim
28 words
A steering lock according to claim 2, characterized in that the mounting means includes an entrainment abutment which takes along the flat spring during rotation of the key.
Claim 6
Dependent Claim
15 words
A steering lock according to claim 3, characterized in that the contact-making parts are pins.
Claim 7
Dependent Claim
27 words
A steering lock according to claim 3, characterized in that the contact-making parts are provided with abutments which limit the movement thereof inwardly toward the key path.
Claim 8
Dependent Claim
160 words
A steering lock for motor vehicles having contact-making means for the actuation of a warning installation when a vehicle door is open and an ignition key is in the steering lock, the steering lock comprising a lock cylinder with a mounting means of insulating material containing two substantially oppositely disposed contact-making parts extending into the key path but failing to contact one another, said contact-making parts being in operative connection at the outer ends thereof elastically with a slip-ring means adapted to be connected with the warning installation, said ignition key including conducting portions to operatively connect said contact-making parts and portions of said lock cylinder which are in turn connected to the circuit ground, characterized in that the contact-making parts are constructed as telescopic pins having parts guided one within the other which are forced apart by springs disposed on the inside thereof, and in that the inner pin parts are forced by the springs against the slip-ring means.
Claim 9
Dependent Claim
160 words
A steering lock for motor vehicles having contact-making means for the actuation of a warning installation when a vehicle door is open and an ignition key is in the steering lock, the steering lock comprising a lock cylinder with a mounting means of insulating material containing two substantially oppositely disposed contact-making parts extending into the key path but failing to contact one another, said contact-making parts being in operative connection at the outer ends thereof elastically with a slip-ring means adapted to be connected with the warning installation, said ignition key including conducting portions to operatively connect said contact-making parts and portions of said lock cylinder which are in turn connected to the circuit ground, characterized in that the contact-making parts are constructed as telescopic pins having parts guided one within the other which are forced apart by springs disposed on the inside thereof, and in that the inner pin parts are forced by the springs against the slip-ring means.
Claim 10
Dependent Claim
26 words
A steering lock according to claim 6, cHaracterized in that the outer pin parts are provided at the outer end with a flanged edge as abutment.
References Cited (Backward Citations)
US2105304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |