Actuating piston assembly, and components thereof, for torque tr

Details Actuating piston assembly, and components thereof, for torque tr Actuating piston assembly, and components thereof, for torque tr

1988-12-08

1990-04-17

Look, Edward K.

Expansible chamber devices

Annular working member or annular linearly extending chamber...

277182, 277183, 277189, 192 85AA, F01B 3100

Patent

active

049170023

ABSTRACT:
An actuating piston assembly (10) for torque transmitting systems (11). The torque transmitting system (11) is encased within a housing member (12), and a mounting annulus (40) is presented from the housing member (12). The mounting annulus (40) has a radially outer, cylindrical surface (41) and a radially inner, cylindrical surface (42), the two surfaces (41 and 42) being preferably concentric. A seal retainer (45) is carried on the mounting annulus (40), and the seal retainer (45) has a substantially planar web portion (46). Outer and inner rims (50 and 51) are presented from the web portion (46) and frictionally engage the corresponding outer and inner surfaces (41 and 42) on the mounting annulus (40) to secure the seal retainer (45) thereto. A plurality of circumferentially spaced outer blocking flanges (52) extend radially outwardly from the outer rim (50), and a plurality of circumferentially spaced inner blocking flanges (53) extend radially inwardly from the inner rim (51). An outer seal (54) is secured between a the stop sruface (39) and the outer blocking flanges (52), and an inner seal (55) is similarly secured between the stop surface (39) and the inner blocking flanges (53). An annular, U-shaped piston (60) has a pair of radially spaced inner and outer skirt portions (62 and 63) which engage the inner and outer seals (55 and 54), respectively, to define a piston chamber (65).

REFERENCES:
patent: 3371937 (1965-06-01), Maeda
patent: 3814225 (1974-06-01), Martin
patent: 3972346 (1976-08-01), Wormser
patent: 4608826 (1986-09-01), Sawyer

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