Patent ID: 6405766
Filing Date: 2002-06-18
Classification: B60K,F16K,Y10T

Abstract:
An on-board refueling vapor recovery valve (ORVR) for use in a motor vehicle fuel tank comprising:(a) housing structure defining a float chamber with an outlet wherein a float disposed in said chamber is operative upon encountering a first predetermined level of liquid fuel in the fuel tank to move to a position closing said outlet with an upper end of said float and to move to a position opening said outlet when fuel level falls below said first level and when said float is moved to a position contacting said body with a lower end of said float upon fuel dropping below a second level lower than said first; (b) means for dampening movement of said float comprising resiliently deflectable portions of said housing structure; and, (c) means applying a force to bias said float in a direction toward said closed position.