192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1984-01-31
1986-12-16
Krizmanich, George H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 3TR, 192 9, B60K 4128
Patent
active
046290435
ABSTRACT:
An improved electric parking brake system for a vehicle capable of controlling the brake-applying and releasing operations of a parking brake in an optimal manner in accordance with the gradient of the road on which the vehicle is stopped. The inventive parking brake system comprises in combination: a parking brake; an electromagnetic element in the form of a motor for controlling application and release of the parking brake; a command-signal producing device operable to alternatively feed a brake-application command signal or a brake-release command signal to the electromagnetic element; a gradient sensor adapted to detect the gradient of the road on which the vehicle rests for sending out a signal indicative of the gradient detected; and a controller adapted to receive the signals from the command-signal producing device and the gradient sensor for controlling the brake-applying operation and/or the brake-releasing operation of the electromagnetic element in a manner such that the parking brake can be operated optimally in accordance with the gradient of the road.
REFERENCES:
patent: 3752251 (1973-08-01), Gaeke
patent: 3830330 (1974-08-01), Fontaine
patent: 4446950 (1984-05-01), Wise et al.
Kanemaru Yukihiro
Matsuo Masayoshi
Takagishi Kazuhiro
Tobita Kouji
Bryan James E.
Ferguson Jr. Gerald J.
Hoffman Michael P.
Krizmanich George H.
Mazda Motor Corporation
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