Roll-over valve
A roll-over valve is described for use in a vehicle fuel system, the roll-over valve comprising: a hollow valve housing having a longitudinal axis, an inlet for admitting fuel vapors from the vehicle fuel system into the valve housing, and an outlet for discharging the fuel vapors from the valve housing, a valve member positioned within the hollow valve housing for movement between an outlet-opening position and an outlet-closing position, the valve member having a ball-receiving cup configured to define a first inclined ramp portion, base means for retaining the valve member within the housing, the base means including a second inclined ramp portion. The base means is coupled to the valve housing to present the second inclined ramp portion in opposing spaced-apart relation to the first inclined ramp portion of the cup to define a ball-receiving space therebetween, and a ball positioned in the ball-receiving space in substantially camming relation to each of the opposing first and second inclined ramp portions. The ball rides on both ramp portions in a radially-outward direction to move the valve member to its outlet-closing position in response to tilting the valve housing about its longitudinal axis during a vehicle roll-over.
- Assignee:
- Stant Inc., Connersville, IN
- Patent Number(s):
- US 4655238
- OSTI ID:
- 6635026
- Resource Relation:
- Patent File Date: Filed date 7 Mar 1986
- Country of Publication:
- United States
- Language:
- English
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