Self-energizing brake

Details Self-energizing brake Self-energizing brake

1989-01-23

1990-08-07

Halvosa, George E. A.

Brakes

Vehicle

Velocipede

74 99A, 744248NA, 188 722, 192 94, B62L 114

Patent

active

049460072

ABSTRACT:
A self-energizing brake which includes opposed rocker arms attached to a frame by a bolt or the like. The rocker arms also include a housing extending transversely therefrom which is rotatable about the bolt. The housing encloses a tubular member having a plurality of helical ridges which mate with a plurality of bearings disposed about the inner surface of the housing. The housing is axially movable relative to the bolt. The housing is sealed about the bolt by O-rings and contains a lubricant such as grease. Friction pads extend from each rocker arm adjacent the rim of a tire to contact the rotating rim as the rocker arms are related. Such rotation results in movement of the housing in an axial direction as the rim drags the friction pads forward. This axial motion of the housings caused by the drag of the friction pads on the tire rim is transferred into rotational motion of the rocker arms by the cooperating relationship of helical ridges and bearings to thereby increase the pressure of the friction pads against the tire rim.

REFERENCES:
patent: 2844969 (1958-07-01), Lahr
patent: 2985259 (1961-05-01), Gardner
patent: 3285372 (1966-11-01), Rossmann
patent: 4022300 (1977-05-01), Afanador et al.
patent: 4392557 (1983-07-01), Franke
patent: 4538707 (1985-09-01), Schoch
patent: 4567967 (1986-02-01), Crossman
patent: 4597474 (1986-07-01), Nagano
patent: 4768623 (1988-09-01), Nagano

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