Anti-theft device for automotive vehicles acting on the hydraulic braking circuit
First Claim
1. Anti-theft device for vehicles acting on the braking circuit to immobilize the wheels, the hydraulic braking circuit comprising a generator of hydraulic energy (1) in the form of a master cylinder connected by the intermediary of hydraulic conduits to receiving mechanisms of hydraulic energy in the form of brakes (2) characterized by a second generator of hydraulic energy (3) connected to the hydraulic braking circuit below the first generator (1) and by a hydraulic circuit selection means (4) which switches the receiving mechanisms (2), either only with the first hydraulic energy generator (1), or only with the second hydraulic energy generator, this latter switching being assured when a surveillance circuit detects information indicative of an unauthorized usage of the vehicle, which surveillance circuit in this case acts on the second generator such that this latter pressurizes the brakes of the vehicle, said second generator of hydraulic energy (3) comprising:
- an outlet port (6) connected to the hydraulic braking mechanisms (2) by the intermediary of the hydraulic conduits of the braking circuit,a first inlet port (7) connected by a conduit of the braking circuit to the master cylinder (1),and a second inlet port (8) connected by a hydraulic conduit (9) to the second generator (3) of hydraulic energy which is constituted by a master cylinder actuated by a motor mechanism (10) energized by the surveillance circuit.
0 Assignments
0 Petitions
Accused Products
Abstract
The present invention concerns an anti-theft device for automotive vehicles acting on the braking circuit to lock the wheels. The device according to the invention acts on the hydraulic braking circuit of a vehicle, the circuit comprising a generator of hydraulic energy (1) or master cylinder connected by the intermediary of hydraulic conduits to hydraulic energy receiving mechanisms or brake (2), the device being characterized essentially by a second generator of hydraulic energy (3) connected to the hydraulic braking circuit below the first generator (1) and by a hydraulic circuit selector means (4) which switches the receiving mechanisms (2) either only with the first energy generator (1), or only with the second (3), this latter taking place when a surveillance circuit detects information indicative of an unauthorized use of the vehicle, which surveillance circuit in this case acts on the second generator (3) such that this latter pressurizes the brakes of the vehicle.
48 Citations
16 Claims
-
1. Anti-theft device for vehicles acting on the braking circuit to immobilize the wheels, the hydraulic braking circuit comprising a generator of hydraulic energy (1) in the form of a master cylinder connected by the intermediary of hydraulic conduits to receiving mechanisms of hydraulic energy in the form of brakes (2) characterized by a second generator of hydraulic energy (3) connected to the hydraulic braking circuit below the first generator (1) and by a hydraulic circuit selection means (4) which switches the receiving mechanisms (2), either only with the first hydraulic energy generator (1), or only with the second hydraulic energy generator, this latter switching being assured when a surveillance circuit detects information indicative of an unauthorized usage of the vehicle, which surveillance circuit in this case acts on the second generator such that this latter pressurizes the brakes of the vehicle, said second generator of hydraulic energy (3) comprising:
-
an outlet port (6) connected to the hydraulic braking mechanisms (2) by the intermediary of the hydraulic conduits of the braking circuit, a first inlet port (7) connected by a conduit of the braking circuit to the master cylinder (1), and a second inlet port (8) connected by a hydraulic conduit (9) to the second generator (3) of hydraulic energy which is constituted by a master cylinder actuated by a motor mechanism (10) energized by the surveillance circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. Anti-theft device for vehicles acting on the braking circuit to immobilize the wheels, the braking circuit comprising a first generator of hydraulic energy in the form of a principal master cylinder, receiving mechanisms of hydraulic energy in the form of brakes, a principal hydraulic conduit connected to the master cylinder and secondary hydraulic conduits connected to the brakes, said device comprising in combination:
-
(a) a second hydraulic energy generator associated with actuating motor means, (b) a hydraulic circuit selector connected to the braking circuit comprising an outlet orifice connected to the hydraulic energy receivers by secondary conduits, a first inlet orifice connected by the principal conduits to the principal master cylinder and a second inlet orifice connected by a hydraulic conduit to the second hydraulic energy generator, said circuit selector being of the type having an internal bore in which open two opposed orifices constituting the inlet orifices, into which empty a radial orifice constituting the outlet orifice and in which is mounted slidably a piston which is urged toward one or the other inlet orifice to close it, by liquid pressurized by one or the other of the hydraulic energy generators, and (c) a surveillance circuit which energizes the motor means of the second generator whereby the latter pressurizes the brake circuit, when it detects an unauthorized usage of the vehicle or attempted entry of the vehicle. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
Specification