Oblon, Fisher, Spivak, McClelland & Maier
Regulator valve for hydraulic anti-skid apparatus
 A regulator valve for a hydraulic anti-skid apparatus, in which a first valve member in the form of a piston is reciprocable within a housing for the regulator valve and subdivides the interior of the housing into first and second chambers arranged to be respectively applied with a hydraulic power pressure from a fluid pump and a master cylinder pressure from a master cylinder, the first valve member being formed at its one end with a valve part exposed within the first chamber, and in which a second annular valve member is arranged in the first chamber coaxially with the first valve member and is formed at its one end with a first small diameter valve part cooperating with the valve part of the first valve member to form a first annular throttle for throttling the fluid flow from the pump to a fluid reservoir through the first chamber and at its other end with a second large diameter valve part cooperating with the inner end wall of the first chamber to form a second annular throttle for throttling the fluid flow after the first annular throttle is closed, the second valve member being resiliently loaded by a spring toward the inner end wall of the first chamber. 
Aisin Seiki Kabushiki Kaisha Toyota Jidosha Kabushiki Kaisha
B B
B60T B60T
inventional inventional
Nobuyasu Shingo Asao
Nakanishi Watanabe Kozakai