Power plants – Pressure fluid source and motor – Pulsator
Patent
1995-05-23
1996-09-24
Lopez, F. Daniel
Power plants
Pressure fluid source and motor
Pulsator
F15B 704
Patent
active
055579353
ABSTRACT:
A master cylinder having, in addition to a main pressurizing chamber, a fast-fill pressurizing chamber to quickly force, while pedal effort is minimal, brake pads or shoes from initially retracted positions to positions where the pads or shoes are in contact with corresponding brake disks or drums. The present master cylinder uses no fixed brake fluid flow restriction valves to vent brake fluid from the fast-fill pressurizing chamber once contact is made, pedal travel being made thereby independent of the rate of applied pedal effort. The present master cylinder uses a staged inverse proportioning valve, disposed between the fast-fill reservoir main pressurizing chambers, and simultaneously responsive to brake fluid pressures of both the fast-fill and the main pressurizing chambers to vent brake fluid from the fast-fill pressurizing chamber into a brake fluid reservoir as pedal effort begins to increase, thereby moderating the rate of increase of pedal effort so that a minimum of inconsistency in that effort is detectable when the transition from quick take-up to normal master cylinder operation is made.
REFERENCES:
patent: 4372117 (1983-02-01), Kobayashi
patent: 4455831 (1984-06-01), Maehara
patent: 4571944 (1986-02-01), Kubota
patent: 4745751 (1988-05-01), Gaiser
SAE Technical Paper Series No. 830412, Brake Integrated Hydraulic Actuation System Master Cylinder, Roscoe Nash, Jr., Ford Motor Company, Feb. 28-Mar. 4, 1983.
Kelsey-Hayes Company
Lopez F. Daniel
LandOfFree
Apply-rate-independent fast-fill 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 Apply-rate-independent fast-fill master cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apply-rate-independent fast-fill master cylinder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1921315