Power plants – Pressure fluid source and motor – Pulsator
Patent
1997-05-28
1999-10-05
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Pulsator
60585, 60591, 60592, B60T 1120
Patent
active
059606304
ABSTRACT:
The invention is directed to a hydraulic brake apparatus which includes a master cylinder having a cylinder body and a master piston slidably disposed therein for defining a pressure chamber ahead of the master piston and a power chamber behind the master piston. A control piston is slidably disposed in the cylinder body ahead of the master piston to define the pressure chamber behind the control piston, and adapted to be moved in response to movement of the master piston. An auxiliary pressure source is provided for pressurizing brake fluid to generate a power pressure, and a valve assembly is communicated with the auxiliary pressure source to regulate the power pressure into a regulated pressure in response to movement of the control piston. The valve assembly is adapted to supply the regulated pressure into the power chamber to assist the operation of a brake pedal. The control piston is provided with at least one sealing member to separate the regulator chamber from the pressure chamber with substantially equal pressure applied to one end of the sealing member and the other end of the sealing member.
REFERENCES:
patent: 3928970 (1975-12-01), Farr
patent: 3972192 (1976-08-01), Muterel
patent: 4874207 (1989-10-01), Nishii et al.
patent: 4892361 (1990-01-01), Nishii et al.
patent: 5070698 (1991-12-01), Savidan
patent: 5515678 (1996-05-01), Kurokawa et al.
Ishida Satoshi
Kato Masahiko
Nishii Michiharu
Aisin Seiki Kabushiki Kaisha
Nguyen Hoang
Toyota Jidosha & Kabushiki Kaisha
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