Brake regulator with second boost chamber

Details Brake regulator with second boost chamber Brake regulator with second boost chamber

1990-04-23

1991-09-03

Look, Edward K.

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

With means for selectively changing the speed or force...

91376R, 91 32, 91 19, 92107, 92152, 92110, F15B 1106

Patent

active

050442554

ABSTRACT:
The vacuum servomotor comprises a main casing (12) divided sealingly on the inside into first and second chambers (10, 20) by a flexible membrane (9) bearing on a rigid disk (7) integral with an activating piston (3). The first chamber (10) is subjected to a low pressure, while the second chamber (20) is subjected either to this low pressure or to a higher pressure. An auxiliary casing (25) is integral with the rigid disk (7) and projects into the first chamber (10), an auxiliary piston (27) sealingly dividing the auxiliarly casing (25) on the inside into third and fourth chambers (30, 40), the third chamber (30) being closed by the rigid disk (7), the auxiliary piston (27) being mounted stationary relative to the main casing (12).

REFERENCES:
patent: 2916205 (1959-12-01), Litz
patent: 3412649 (1968-11-01), Franz
patent: 3485141 (1969-12-01), Ott et al.
patent: 3999266 (1976-12-01), Parker
patent: 4226167 (1980-10-01), Lew
patent: 4610483 (1986-09-01), Matsumoto et al.
patent: 4759260 (1988-07-01), Lew

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