Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1977-09-12
1979-10-09
Hershkovitz, Abraham
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
60545, 60561, 60562, 60574, 60591, B60T 1120, B60T 1108
Patent
active
041703863
ABSTRACT:
A two stage master cylinder having a bore with a first diameter and a second diameter separated by a shoulder. A first piston is located in the first diameter of the bore to establish a first chamber. A second piston has a first section located in the first diameter of the bore to establish a second chamber and a second section located in the second diameter of the bore to establish an actuation chamber therein. A first passage in the second piston connects the actuation chamber with the second chamber. A second passage in the second piston connects the first passage to a reservoir in the housing. A shuttle piston located in the first passage has a first surface area exposed to the second chamber and a second smaller surface area exposed to the actuation chamber. A spring urges the shuttle piston toward the second chamber. An input force from an operator moves the second piston causing fluid to flow from the actuation chamber through the first passage to the second chamber. The first section of the second piston acts on actuation fluid and the operational fluid in the second chamber and the first piston acts on the operational fluid in the first chamber to provide the front and rear wheel brakes with a braking signal. The operational fluid in the second chamber acts on the first surface of the shuttle and overcomes the spring to establish communication of between the actuation chamber and the reservoir through the second passage. Thereafter, the entire input force from the operator acts on the first section of the second piston to pressurize the operational fluid in the first and second chambers in the generation of the braking signal.
REFERENCES:
patent: 2031360 (1936-02-01), Boughton
patent: 2820347 (1958-01-01), Highland
patent: 3062010 (1962-11-01), Krusemark
patent: 3165896 (1965-01-01), Baldwin
patent: 3232628 (1966-02-01), Brand
patent: 3667229 (1972-06-01), Cresto
patent: 3677606 (1972-07-01), Shutt
patent: 3686864 (1972-08-01), Shutt
patent: 4027482 (1977-06-01), Manzini
patent: 4086770 (1978-05-01), Shaw
Decker Ken C.
Hershkovitz Abraham
McCormick Jr. Leo H.
The Bendix Corporation
LandOfFree
Control for a two stage master cylinder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control for a two stage master cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control for a two stage master cylinder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1963135