Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1994-10-03
1996-07-02
Bonck, Rodney H.
Machine element or mechanism
Control lever and linkage systems
Elements
74528, 74543, 74545, 74569, G05G 104
Patent
active
055311369
ABSTRACT:
A brake operating mechanism comprises a frame, an articulatable beam movable relative to the frame, a force reacting fulcrum movable relative to both the frame and the beam and pivotably supporting the beam, and resilient means acting on one end of the beam. The other end of the beam is, in use, connected to a brake operating element, such as a brake cable. The fulcrum is movable, in use, between a first position in which the beam is in a maximum loading condition with the brakes, which the mechanism operates, applied and in which the beam is force balanced resiliently about the fulcrum and a second position nearer the one end of the beam than when in its first position and in which position the beam is unloaded as a result of the resilient means becoming grounded-out by the frame so as to render the force balance ineffective and allow the brakes to become released.
REFERENCES:
patent: 877714 (1908-01-01), Heermans
patent: 2793541 (1957-05-01), Borcherdt
patent: 2815769 (1957-12-01), Huyck
patent: 3250350 (1966-05-01), Shimanckas
patent: 5187998 (1993-02-01), Asano et al.
Bonck Rodney H.
Kim Chong H.
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