Modulator with two-stage orificed master cylinder bypass valve

Details Modulator with two-stage orificed master cylinder bypass valve Modulator with two-stage orificed master cylinder bypass valve

1987-12-28

1989-04-18

Halvosa, George E. A.

Fluid-pressure and analogous brake systems

Pipeless valves

303 842, 303115, 188151A, 60582, 13751627, 1375123, B60T 888, B60T 846, B60T 842

Patent

active

048221120

ABSTRACT:
A vehicle wheel brake system having a service braking section and a wheel lock control (ABS) section is provided. Under certain conditions the wheel lock control section may not be able to generate sufficient pressure to operate the vehicle wheel brakes when the master cylinder output pressure has been isolated from the wheel brakes. When such conditions occur, the displacement piston of the ABS control section moves to open a bypass valve which connects master cylinder output pressure to the vehicle wheel brake even though the ABS system has isolated it from that wheel brake. The bypass valve is a two-stage orifice valve arrangement which provides orifice control of master cylinder pressure during initial brake actuation and provides two stage valve opening action when the master cylinder output pressure is to be delivered to the wheel brake to actuate that brake irrespective of the attempted control of the wheel brake by the ABS section of the brake system. The opening of the bypass valve effectively returns the vehicle braking system to service braking until the vehicle operator releases the brake system.

REFERENCES:
patent: 1893942 (1933-01-01), Jensen
patent: 3836207 (1974-09-01), Belart
patent: 3934941 (1976-01-01), Holmes
patent: 4138165 (1979-02-01), Blomberg et al.
patent: 4340084 (1982-07-01), Show

Affiliated with

Also associated with

Rating

Modulator with two-stage orificed master cylinder bypass valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Modulator with two-stage orificed master cylinder bypass valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modulator with two-stage orificed master cylinder bypass valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2393061