Hydraulic power booster including backup actuator in addition to

Details Hydraulic power booster including backup actuator in addition to Hydraulic power booster including backup actuator in addition to

1990-07-16

1991-11-19

Look, Edward K.

Power plants

Pressure fluid source and motor

Pulsator

60555, 60582, 605471, B60T 1320

Patent

active

050655736

ABSTRACT:
A hydraulic power booster having a lever device disposed in operative association with a reaction piston, a power piston and a valve spool, for moving the valve spool in one of opposite axial directions thereof for applying a pressure of a pressure source into a power chamber to advance the power piston, in response to a relative movement between the reaction and power pistons. The booster is provided with a backup actuator including a cylinder, and a valve drive piston which slidably engages the cylinder. The cylinder and the valve drive piston cooperate with each other to define a first fluid chamber communicating with the power chamber, and a second fluid chamber communicating with a pressure chamber in which a pressure is generated according to an advancing force of the power piston. The valve drive piston moves the valve spool in the above-indicated one axial direction, in engagement with the valve spool, when the valve drive piston is moved in a direction from the second fluid chamber toward the first fluid chamber.

REFERENCES:
patent: 3064431 (1962-11-01), Schnell
patent: 3638427 (1972-02-01), Meyers
patent: 3978667 (1976-09-01), Ohara
patent: 3995529 (1976-12-01), Bach et al.
patent: 4034566 (1977-07-01), Suketomo et al.
patent: 4114376 (1978-09-01), Cattaneo et al.
patent: 4123908 (1978-11-01), Bertone et al.
patent: 4218887 (1980-08-01), Dauvergne
patent: 4311085 (1982-01-01), Runkle
patent: 4732429 (1988-03-01), Belart et al.

Affiliated with

Also associated with

Rating

Hydraulic power booster including backup actuator in addition to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic power booster including backup actuator in addition to, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic power booster including backup actuator in addition to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1361711