Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1981-09-16
1986-10-21
Hershkovitz, Abraham
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
92 99, 92169, F01B 1900
Patent
active
046178589
ABSTRACT:
A servo mechanism for a vehicle braking system comprises a pressure housing having a front shell 2 and a rear shell 3. A tie rod 43 passes through the front and rear shells 2 and 3, and also through a power piston 4 and diaphragm 5 within the pressure housing. One end of the tie rod carries a device to be actuated by the servo mechanism, while the other end of the tie rod is secured to a vehicle body. In order to provide a fluid-tight seal around the tie rod, a boot 53 is provided, having one end 53a secured to the tie rod 43, and the other end 53c secured within a hole 4a in the piston 4. A cylindrical securing member 54 clamps the respective end 53c of the boot 53 within the hole 4a in the piston 4, and also serves to clamp together the diaphragm 5 and piston 4, in the region of their respective holes 5a and 4a through which the tie rod 43 passes.
REFERENCES:
patent: 4328738 (1982-05-01), Hamamatsu
patent: 4418611 (1983-12-01), Tateoka
Hershkovitz Abraham
Nisshin Kogyo Kabushiki Kaisha
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