CONSTANT CONTACT SIDE BEARING ASSEMBLY WITH IMPROVED HEAT DISSIPATION FOR A RAILCAR

WIPO Patent Application WO/2010/135414

A3

A constant contact side bearing assembly for a railcar includes a housing having a base, a pair of mounting apertures formed through a thickness of the base, a generally cylindrical housing wall upstanding on the base, a pair of diametrically opposed channels, a pair of diametrically opposed openings and a guide member disposed centrally on and upstanding from an inner surface of the base. A cap is disposed for reciprocal axial movement relative to the housing. An elastomeric spring is disposed within a generally closed chamber formed by a combination of the housing and the cap. A pair of air passages is provided for dissipating heat generated during operation of the constant contact side bearing assembly. Each air passage is defined by a pair of aligned openings formed through a wall portion of the cap. Each opening may be disposed within a pocket provided within the cap wall.

WO/2001/023237	SIDE BEARING PAD
WO/1992/020558	RAIL VEHICLE BOGIE WITH SELECTIVELY DEFORMABLE CHASSIS
WO/2011/134263	RAILWAY FREIGHT CAR BOGIE

SPRAINIS RONALD J (US)
ROBITAILLE ANDREW (US)
SAMMARTINO GIUSEPPE (US)
MARLOW JONATHON (US)
GREGAR PETE (US)
ANDERSON BRADLEY (US)

PCT/US2010/035381

February 24, 2011

May 19, 2010

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WABTEC HOLDING CORP (US)
SPRAINIS RONALD J (US)
ROBITAILLE ANDREW (US)
SAMMARTINO GIUSEPPE (US)
MARLOW JONATHON (US)
GREGAR PETE (US)
ANDERSON BRADLEY (US)

B61F5/14; B61F5/24; F16C17/04; F16C27/02

US20040129170A1	2004-07-08
US5601031A	1997-02-11
US6092470A	2000-07-25
US4712487A	1987-12-15

BYRNE, Richard, L. et al. (700 Koppers Building436 Seventh Avenu, Pittsburgh Pennsylvania, US)

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