Crankcase ventilating system, flow control device therefor and method of making the same
This patent describes a flow control device for a crankcase ventilating system of an internal combustion engine, the device comprising a valve housing means having an inlet and an outlet and an annular valve seat means therein intermediate the inlet and the outlet. A movable valve member is disposed in the housing means. A body portion is disposed in the inlet side of the valve seat means and there is a generally frusto-conical flow metering portion for cooperating with the valve seat means to control fluid flow therethrough. A spring means is disposed in the housing means and is operatively associated with the housing means and the valve member to tend to urge the body portion of the valve member away from the valve seat means. The improvement described here is wherein the valve member has fin means adjacent the metering portion and on the outlet side of the valve seat means that cooperates with the housing means to tend to prevent vibration of the valve member during the fluid flow through the valve seat means. The fin means extends outwardly from the valve member, the fin means comprising spaced apart fins disposed in a circular array thereof and radiating outwardly from the valve member, the fin means comprising a separate part having an opening passing centrally therethrough. The valve member has a stem extending from the flow metering portion thereof and being disposed in the opening whereby the part is carried by the valve member.
- Assignee:
- Robertshaw Controls Co., Richmond, VA
- Patent Number(s):
- US 4625703
- OSTI ID:
- 7036005
- Resource Relation:
- Patent File Date: Filed date 8 Apr 1985
- Country of Publication:
- United States
- Language:
- English
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