Control lever system, particularly for vehicle brakes

Details Control lever system, particularly for vehicle brakes Control lever system, particularly for vehicle brakes

1975-04-11

1976-11-02

Scott, Samuel

Machine element or mechanism

Control lever and linkage systems

Foot operated

74516, 74518, 74560, G05G 114

Patent

active

039889459

ABSTRACT:
A control lever mechanism which operates to provide a different mechanical advantage at different points in the range of movement of a main operating control member and in dependence on the force applied to, and the force of resistance to the movement of, the main control member is disclosed. The main control lever is pivoted to a fixed fulcrum and linked to a force transmission member by a second pivot forming a fulcrum which is movable along an arcuate path closer to or further away from the fixed fulcrum. When both the fixed fulcrum and the movable fulcrum lie on the same side of the line of action of the force transmission member a component of the applied force tends to move the movable fulcrum towards the fixed fulcrum to increase the mechanical advantage of the control lever.

REFERENCES:
patent: 1911223 (1933-05-01), D'Aleo
patent: 2884803 (1959-05-01), Willis
patent: 3646830 (1972-03-01), Shrock
patent: 3798995 (1974-03-01), Schroter

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