초록 ▼

A vehicle radiator cap for closing a radiator filler neck is disclosed. The radiator cap includes a central rivet for securing a crown, a bell housing, and a discoid spring and having a flared shank permitting free turning of the crown relative to the primary sealing gasket. The cap further includes

A vehicle radiator cap for closing a radiator filler neck is disclosed. The radiator cap includes a central rivet for securing a crown, a bell housing, and a discoid spring and having a flared shank permitting free turning of the crown relative to the primary sealing gasket. The cap further includes a pressure spring nested within the bell housing and centered directly above an annular valve seat in the radiator filler neck. The upper turn of the spring nests in the shoulder region of the bell housing and the bottom turn biases a seal support plate against the annular valve seat. The seal support plate has an integrally formed cylinder having a lip which retains a vacuum seal in sealing relationship with the bottom surface of the seal support plate.

대표청구항 ▼

A radiator cap for closing the filler neck of a radiator fluid reservoir, said filler neck having an annular valve seat, comprising: a manually manipulable crown covering said filler neck and including means for engaging said crown with said filler neck, said crown having a central aperture; a disco

A radiator cap for closing the filler neck of a radiator fluid reservoir, said filler neck having an annular valve seat, comprising: a manually manipulable crown covering said filler neck and including means for engaging said crown with said filler neck, said crown having a central aperture; a discoid spring having a central aperture; a discoid rubber seal; a bell housing having a central aperture, an upper shoulder region and a lower radially outwardly extending flange, said upper shoulder region supporting said discoid rubber seal for sealing said filler neck; a central rivet extending through said apertures and retaining said crown, discoid spring and bell housing; a pressure-vacuum valve assembly carried by said flange; and a pressure relief spring nested within said bell housing having an upper turn engaging said upper shoulder region of said bell housing and a lower turn biasing said pressure-vacuum valve assembly against said annular valve seat.