Master cylinder piston

Details Master cylinder piston Master cylinder piston

1994-03-25

1995-05-23

Look, Edward K.

Power plants

Pressure fluid source and motor

Pulsator

60589, 60562, B60T 1126, B60T 1128

Patent

active

054170672

ABSTRACT:
A piston arrangement for a master cylinder having a pin for linking a center compensation valve in primary and secondary pistons with a stop members. The primary and secondary each have a pin located in a blind bore which has a cylindrical body with a first semi-spherical head on a first end and a second semi-spherical head located on a second end. A valve return spring acts on a poppet assembly of each compensation valve to position a stem between the first and second semi-spherical heads to hold the pins in the primary and secondary pistons. When a piston return spring moves the primary and secondary pistons toward a rest position, the second semi-spherical heads are held stationary as the pins pivots about the first semi-spherical heads to act on stems and move poppets away from seats and communicate fluid from a source to pressurizing chambers associated with the primary and secondary pistons.

REFERENCES:
patent: 4267697 (1981-05-01), Hodkinson
patent: 4756160 (1988-07-01), Wimbush
patent: 4918922 (1990-04-01), Nakano et al.
patent: 5214917 (1993-06-01), Crumb et al.
patent: 5279125 (1994-01-01), Keyes et al.

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