Tandem brake booster

Details Tandem brake booster Tandem brake booster

1983-09-02

1984-10-09

Maslousky, Paul E.

Motors: expansible chamber type

Relatively movable working members with one having motive...

91434, 91534, 92 50, 92 64, F01B 702, F15B 1314

Patent

active

044754396

ABSTRACT:
A tandem brake booster (10) having first (24) and second (28) walls that move in opposite directions within a cavity to produce an output force. A lever arrangement (48) attached to the second (28) wall engages a fulcrum (70) to transfer a force produced by movement of the second wall (28) into the first (24) wall. A control mechanism (72) has a cylindrical body (74) with an annular surface (78) that engages the lever arrangement (48). The movement of the cylindrical body (74) as compared to the output member (41) is a function of the ratio of the distance from the fulcrum (70) to end (46) and from the fulcrum (70) to the annular surface (78), and as such, maximum output travel can be achieved without requiring a corresponding input travel.

REFERENCES:
patent: 787421 (1905-04-01), Woerner
patent: 2042906 (1936-06-01), McElwaine
patent: 3143929 (1964-08-01), Hager
patent: 3373662 (1968-03-01), Voll et al.
patent: 4086842 (1978-05-01), Kytta
patent: 4387626 (1983-06-01), Myers

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