초록 ▼

A vent valve for a gasoline tank has a multi-piece valve housing that is inserted into the tank through a tank wall opening. The housing includes a valve member and a cap member that has a flange that is ultrasonically welded to the gasoline tank and a coupling skirt that has minimal protrusion into

A vent valve for a gasoline tank has a multi-piece valve housing that is inserted into the tank through a tank wall opening. The housing includes a valve member and a cap member that has a flange that is ultrasonically welded to the gasoline tank and a coupling skirt that has minimal protrusion into the gas tank. The coupling skirt fits into upper portion of the valve member and has keyways that receive inwardly projecting lugs of the valve member to couple the valve and cap members to each other. The valve and cap members are retained in the coupled position by resilent cantilevered lock fingers of the valve member that engage notches in the bottom of the coupling skirt. In a modification the notches coincide with entrance portions of the keyways. The cap member of a second embodiment has a coupling skirt with keyways that fit over an upper portion of the valve member that has outwardly projecting lugs and resilient lock fingers that are cut out of the wall of the valve member. In a modification the outwardly projecting lugs and lock fingers are part of the coupling skirt and the keyways are part of the valve member. The cap member of a third embodiment has a coupling skirt with keyways that receive inwardly projecting lugs of the valve member to couple the valve and cap members to each other. The lugs are retained in the coupled position by notches at the inner ends of the keyways.

대표청구항 ▼

[ We claim:] [1.] A snag-proof arrangement for coupling a first member to a second member comprising:the first member having a cylindrical wall that has a first outer diameter,the second member having a flange that has a second outer diameter that is greater than the first outer diameter of the firs

[ We claim:] [1.] A snag-proof arrangement for coupling a first member to a second member comprising:the first member having a cylindrical wall that has a first outer diameter,the second member having a flange that has a second outer diameter that is greater than the first outer diameter of the first member and an annular skirt that fits inside the cylindrical wall of the first member,a circumferential keyway in an outer portion of the annular skirt of the second member, the annular skirt having an inner portion that is unintempted by the circumferential keyway,a radial lug on the cylindrical wall of the first member that extends radially inwardly and is engaged in a coupling position in the keyway of the second member by rotating the second member relative to the first member, andmeans for retaining the radial lug in the coupling position in the circumferential keyway.