S-cam brake bushing cartridge

Details S-cam brake bushing cartridge S-cam brake bushing cartridge

1997-10-10

1999-10-12

Oberleitner, Robert J.

Brakes

Wheel

Transversely movable

384145, 384152, F16D 5100, F16C 3374

Patent

active

059643250

ABSTRACT:
An improved bushing assembly for the inboard end of a brake cam shaft is provided with a bushing which establishes a grease flow pathway within the bushing assembly. Grease enters a cavity formed from a pair of housing halves which contain the bushing through a grease zerk which is directly connected to a first radial hole in the bushing, so the fresh grease injected goes directly to the grease reservoir between the bushing and the shaft. Flow channels provided in the bushing interior surface guide the grease around the shaft to a second radial hole which is diametrically opposite the first radial hole. A seal on the shaft restricts grease flow outwardly from the bushing along the shaft. Grease may be purged through the second radial hole to an annular space between the bushing and the interior surfaces of the housing halves, from which the grease may exit the housing around the periphery of a window in one of the housing halves through which the grease zerk passes.

REFERENCES:
patent: 1562130 (1925-11-01), Stitzinger
patent: 2249501 (1941-07-01), Teker
patent: 2331652 (1943-10-01), Buckendale
patent: 2892662 (1959-06-01), Scheel
patent: 3368648 (1968-02-01), Brownyer
patent: 3589781 (1971-06-01), Hanley
patent: 3819242 (1974-06-01), Robinson
patent: 5238310 (1993-08-01), Layfield
patent: 5316111 (1994-05-01), Layfield
patent: 5547288 (1996-08-01), Quinn et al.

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