Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1991-03-13
1992-05-12
Look, Edward K.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
91533, 92 48, 92128, F15B 910
Patent
active
051117347
ABSTRACT:
An improvement of a variable pressure passage which is formed in a valve body of a booster, for example, a brake booster, is disclosed. The valve body which is disposed within a shell of the booster comprises a first and a second tubular member which are connected together. An axial space is defined by the outer peripheral surface of the first tubular member and the inner peripheral surface of the second tubular member when they are integrally connected together, and forms a variable pressure passage providing a communication between forwardly and rearwardly located, variable pressure chambers. This avoids the formation of an axial bore and a radial opening which are formed in a solid portion of a single member valve body, as occurs in the prior art, thus allowing the mechanical strength of the valve body to be improved.
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Jidosha Kiki Co. Ltd.
Look Edward K.
Mattingly Todd
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