Fluid handling – Systems – System with plural openings – one a gas vent or access opening
Patent
1998-08-24
2000-02-29
Rivell, John
Fluid handling
Systems
System with plural openings, one a gas vent or access opening
220374, 74606R, F16K 2404
Patent
active
060296968
ABSTRACT:
An air bleed device for a rigid closed housing having a vent hole in a vehicle power transmission system has a baffle portion and a vent portion, connected through a neck portion. In use, the baffle portion is positioned inside the housing and is significantly larger than the vent hole, so it may not be deformed sufficiently to pass through the vent hole. The baffle portion is a pair of planar pieces held in spaced apart relationship by a wall portion which runs along the periphery of the planar pieces and leaves an opening to give access to a plenum between the planar pieces. An outer surface of one of the planar pieces rests against the inner wall of the housing. The vent portion has a collar with a decreasing diameter which may be pulled through the vent hole in a deformed manner and a lower flange-like surface of the collar rests against the outer wall of the housing. When installed in the vent hole, the neck portion provides a frictional fit due to its outside diameter. Internal passages in the baffle portion, the neck portion and the vent portion are interconnected to allow free air flow from the housing interior to the ambient The preferred air bleed device is a unitary piece molded from an oil-resistant elastomer.
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Dana Corporation
Rivell John
LandOfFree
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