Pressure differential release valve

Details Pressure differential release valve Pressure differential release valve

1989-06-21

1990-11-13

Hepperle, Stephen M.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

1374933, 303 971, 303 68, B60T 1512

Patent

active

049696971

ABSTRACT:
The pressure differential release valve (130) comprises a three-part body having a first end member (132), an intermediate body member (133), and a second end member (134). The members (132, 133, 134) define an interior stepped bore (139) containing a differential area piston (141) and a poppet (161). The differential area piston (141) and poppet (161) have respective longitudinal through-openings (142, 162) and the poppet (161) engages a valve seat (168) of the body. The longitudinal through-opening (162) of the poppet (161) includes a ball valve (165) biased by a spring (166) into engagement with a valve seat (164) of the poppet (161). The piston (141) abuts the poppet (161) at an end (151) adjacent the valve seat (164) of the poppet (161). Fluid pressure received at an end (135) opening in the first end member (132) is transmitted through the body and exits an end opening (136) at the second end member (134). The fluid pressure displaces the ball valve (165) against the spring (166) so that fluid flows around the ball valve (165) and through the longitudinal through-opening (162) of the poppet (161). A reverse flow of fluid between the end openings (135, 136) causes, at a predetermined pressure differential, the piston (141) and poppet (161) to be displaced within the stepped bore (139) so that fluid flows around the poppet (161) and into the longitudinal through-opening (142) of the piston (141) whereby the ball valve (165) within the poppet (161) is effectively bypassed.

REFERENCES:
patent: 3010282 (1961-01-01), Jansson
patent: 3252740 (1966-05-01), Stelzer
patent: 3375852 (1968-04-01), Milster
patent: 3598451 (1971-08-01), Doerfler
patent: 3677605 (1972-07-01), Matsumoto et al.
patent: 3721473 (1973-03-01), Budzich
patent: 3742926 (1973-07-01), Kemp
patent: 3771837 (1973-11-01), Budzich
patent: 3838895 (1974-10-01), Deem
patent: 3886966 (1975-06-01), Yabuta et al.
patent: 4024712 (1977-05-01), Takeuchi
patent: 4657315 (1987-04-01), Belart
patent: 4660899 (1987-04-01), Ando et al.
patent: 4685749 (1987-08-01), Otsuki et al.
patent: 4702529 (1987-10-01), Tobiasz
patent: 4703979 (1987-11-01), Nakanishi et al.
patent: 4722575 (1988-02-01), Graham
patent: 4725105 (1988-02-01), Brown
patent: 4736989 (1988-04-01), Myers et al.
patent: 4750789 (1988-06-01), Belart et al.
patent: 4753487 (1988-06-01), Bach et al.
patent: 4753490 (1988-06-01), Belart et al.
patent: 4768843 (1988-09-01), Baughman et al.
patent: 4779933 (1988-10-01), Schonlau et al.
patent: 4785847 (1988-11-01), Steer et al.

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