Power plants – Pressure fluid source and motor – Pulsator
Patent
1992-07-28
1993-05-04
Look, Edward K.
Power plants
Pressure fluid source and motor
Pulsator
60589, 92 13, B60T 1120, F15B 708
Patent
active
052070620
ABSTRACT:
A center-compensation master cylinder (10) has first (20) and second (30) pistons with center-compensation valve members (27, 37). The pistons (20, 30) have diametrically extending slots (22, 32) at central axial portions thereof through which extend pin members (53, 54) to effect opening of the valve members (27, 37) when the pistons (20, 30) are in at-rest positions. A first spring (29) extends between a head (24) of the first piston (20) and the second piston (30), and a second spring (39) extends between an end (15) of the bore 0 (I4) and the head (34) of the second piston (30). The first spring (29) is caged via a caging mechanism (60) ensuring that the first (20) and second (30) pistons will travel simultaneously when the center-compensation valve members (27,37) are closing. The caging mechanism (60) is adjustable to control accurately the location of the second piston (30 ) in an at-rest position. The caging mechanism comprises an end part (47) non-rotatably and axially coupled with longitudinal extensions (40) of the head (24) of the first piston (20), a member (65) adjustably coupled with a threaded end (47C) of the end part (47), and a head (66) of the member (65) abutting a cage end member (70) which seats at a back portion (31) of the second piston (30). The cage end member (70) is cup-shaped and includes a radially flared lip (74) providing a seat for one end of the first spring (29) while the other end of the first spring (29) is received at a diametral extension (28) of the first piston (20).
REFERENCES:
patent: 3167920 (1965-02-01), Fleury
patent: 3487641 (1970-01-01), Hackett
patent: 3972192 (1976-08-01), Muterel
patent: 4078384 (1978-03-01), Shutt
patent: 4472942 (1984-09-01), Nomura et al.
patent: 4534170 (1985-08-01), Meynier
patent: 4550567 (1985-11-01), Schaefer
patent: 4621498 (1986-11-01), Schaefer
patent: 4858437 (1989-08-01), Ochiai
patent: 4891945 (1990-01-01), Becker
patent: 4922120 (1990-05-01), Becker et al.
patent: 4939901 (1990-07-01), Saalbach et al.
patent: 5036751 (1991-08-01), Seip et al.
patent: 5040768 (1991-08-01), Minami et al.
patent: 5042254 (1991-08-01), Schonlau et al.
patent: 5046316 (1991-09-01), Steffes et al.
patent: 5050382 (1991-09-01), Burgdorf et al.
patent: 5052182 (1991-10-01), Nishii et al.
patent: 5056313 (1991-10-01), Venetos et al.
patent: 5065580 (1991-11-01), Nishii
patent: 5161376 (1992-11-01), Hartmann
Crumb Donald A.
Wilson Robert K.
Allied-Signal Inc.
Decker Ken C.
Look Edward K.
Nguyen Hoang
Palguta Larry J.
LandOfFree
Center valve master cylinder with adjustable caged primary sprin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Center valve master cylinder with adjustable caged primary sprin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Center valve master cylinder with adjustable caged primary sprin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1967626