B - Operations – Transporting – 60 – B
Patent
B - Operations, Transporting
60
B
B60B 27/00 (2006.01) B60B 35/00 (2006.01)
Patent
CA 2326615
A vent system for a wheel hub comprising a first filtered vent at the wheel end cavity and a second vent formed by a one-way, pressure relief valve venting the axle tube to atmosphere. The vent system defines a vent path from the wheel end cavity through a first, preferably filtered, vent into the axle tube then through a second check valve connecting the axle tube to atmosphere. A porous material is positioned to cover the vent passage at the wheel end cavity for allowing a flow of gases to enter and exit the vent passage while preventing liquids and other contaminants from traveling therethrough. The porous material is held inplace over the vent by a snap ring or other suitable retention means disposed within the vented plug member. The second axle tube vent is disposed along the axle tube to vent the tube itself to atmosphere with pressure relief.
Blessing Martin
Davison Kent
Sitter Don
Dana Corporation
Ridout & Maybee Llp
LandOfFree
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