Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1998-07-09
1999-09-14
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
3031161, 3031191, 303152, 3031192, B60T 832
Patent
active
059511184
ABSTRACT:
Vehicle hydraulic braking system including a brake including a wheel brake cylinder operated with a pressurized fluid to brake a vehicle wheel, a seating valve having a valve member movable toward and away a valve seat and biased in a first direction for seating of the valve member onto the valve seat, and a valve driving device for generating a valve drive force acting on the valve member in a second direction opposite to the first direction, and a seating valve control device for controlling the valve driving device to selectively open and close the seating valve, for thereby regulating a pressure of the fluid in the wheel brake cylinder, and wherein the seating valve control device includes a seating velocity reducing device for commanding the valve driving device to generate a valve drive force, during at least a portion of a movement of the valve member for seating onto the valve seat, for reducing a seating velocity of the valve member.
REFERENCES:
patent: 5727851 (1998-03-01), Ohkubo et al.
Butler Douglas C.
Toyota Jidosha & Kabushiki Kaisha
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