Brakes – Operators – Fluid pressure
Patent
1989-12-12
1992-03-17
Graham, Matthew C.
Brakes
Operators
Fluid pressure
91376R, B60T 1352
Patent
active
050960288
ABSTRACT:
In the negative pressure booster equipment according to the present invention, a valve plunger 17 and an input shaft 18 are incorporated in a single member. Also, the axial length of the guide 17a of the valve plunger in relation to the valve body 4 is set to such size as to allow the angle of the maximum inclination of the input shaft 18 during operation. Further, a retainer 27 to support a spring 33 of a control valve 22 is removably mounted on the input shaft 18 from the atmospheric air inlet of the valve body 4. Accordingly, in the case of valve disc 24 is to be replaced, valve disc 24 and other rubber products can be readily replaced by removing the retainer 27 without disassembling the valve plunger 17 or the input shaft 18 from the valve body 4. Because the valve plunger 17 and the input shaft 18 are incorporated, the caulking process for the members 17 and 18 are not required. Because the guide 17a of the valve plunger 17 requires the guding function in lesser degree than the conventional equipment, the overall length of the equipment can be shortened.
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patent: 3974741 (1976-08-01), Ohmi
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patent: 4819996 (1989-04-01), Belart et al.
patent: 4843948 (1989-07-01), Sugiura et al.
patent: 4893426 (1990-01-01), Bixler
Graham Matthew C.
Jidosha Kiki Co. Ltd.
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