Vacuum booster diaphragm/support plate retention method

Details Vacuum booster diaphragm/support plate retention method Vacuum booster diaphragm/support plate retention method

1991-12-17

1993-07-13

Look, Edward K.

Power plants

Pressure fluid source and motor

Pulsator

913692, 91376R, 92 98R, 92 99, B60T 1300, F15B 910, F01B 1900

Patent

active

052262910

ABSTRACT:
A brake booster is provided having a power piston slidably mounted in a housing. In a preferred embodiment the piston has a generally radial flange. Encircling the power piston is a flexible diaphragm having along its inner periphery a bead encircling the power piston and a sheet-like section radially extending from the bead. A retaining ring has a first section extending radially outward, a second section generally parallel with the piston and a third section with teeth projecting radially inwardly. Pushing the retainer towards the flange causes the bead to be radially compressed and the third section of the retainer to be deformed. The wedging causes the retainer to be retained in place sealably connecting the diaphragm with the power piston.

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patent: 4936191 (1990-06-01), Kobayashi
patent: 5178055 (1993-01-01), Shinohara et al.

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