Drum brake apparatus

Details Drum brake apparatus Drum brake apparatus

2007-02-20

2007-02-20

McClellan, James (Department: 3683)

Brakes

Wheel

Transversely movable

C188S325000, C188S329000

Reexamination Certificate

active

10858283

ABSTRACT:
A cam mechanism7provided as a shoe drive mechanism includes a cam supporting plate21being loosely and rotatably fitted on an anchor pin10for receiving a shoe operating force, a first cam plate23rotatably connected to the cam supporting plate21at an outer cam supporting position which is a position shifted away from the anchor pin10radially outwardly of the drum, a second cam plate25rotatably connected to the cam supporting plate21at an inner cam supporting position which is away from the anchor pin10toward an operating force generator6, so that a pair of brake shoes3, 4are opened outwardly by the separate cam plates23, 25, respectively.

REFERENCES:
patent: 1792432 (1931-02-01), Lauer
patent: 1799227 (1931-04-01), Gunn
patent: 1908439 (1933-05-01), Norton
patent: 1994820 (1935-03-01), Herve
patent: 5310028 (1994-05-01), Sampson
patent: 2001/0020561 (2001-09-01), Maehara
patent: 2002/0166742 (2002-11-01), Maehara
patent: 2001-254766 (2001-09-01), None
patent: 2002-54665 (2002-02-01), None
patent: A-2002-33044 (2002-11-01), None

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