Theft-proof system for motor vehicles
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorsHans Colell, Richard Hetmann
Life of this patent
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Abstract
A theft-prevention system for a motor vehicle wherein at least one cylinder lock having a closing cylinder and a switching mechanism that is relatively translatable with respect to the closing cylinder for actuating and deactuating the cylinder lock is engageable by a first key which is able to actuate and deactuate only the cylinder lock, and a second key which is engageable with the cylinder lock for actuating and deactuating both the closing cylinder and at least one auxiliary system for deterring the theft of the vehicle. Actuation of the auxiliary system by the second key engages a locking mechanism preventing operation of the cylinder lock.
Claims18
A theft-prevention system for motor vehicles of the type having a lock on doors, hoods or the like of a vehicle, comprising:
- (a) at least one cylinder lock mechanism, said cylinder lock mechanism having a closing cylinder;
- (b) at least one auxiliary means for deterring theft of said vehicle including electrical contacts for actuating same;
- (c) a contact switching mechanism forming a further part of the cylinder lock mechanism, said contact switching mechanism being translatable relative to said closing cylinder;
- (d) first key means engageable with said cylinder lock mechanism for actuating and deactuating only said closing cylinder;
- (e) second key means engageable with said cylinder lock mechanism for actuating and deactuating both said closing cylinder and said auxiliary means;
- and
- (f) a locking mechanism engageable with said cylinder lock when auxiliary means is actuated for preventing operation of said cylinder lock by said first key means.
Dependencies are inferred from the claim text.