Cap for a container, especially a vehicle radiator

Details Cap for a container, especially a vehicle radiator Cap for a container, especially a vehicle radiator

1992-02-19

1992-12-29

Shoap, Allan N.

Receptacles

Closures

With condition responsive vent or valve

220303, 220DIG32, 1374939, 1375125, 13751627, B65D 5116

Patent

active

051744635

ABSTRACT:
In a closure cap for a container, especially for a vehicle radiator, with an outer part (12), an inner part (16) of cup-shape connected with the outer part and insertable into the opening to be closed, and having an overpressure valve arranged in the inner part for opening and closing a pressure compensation channel running through the inner part (16), which overpressure valve includes an axially movable first valve body (26) which carries a first ring shape substantially radially extending sealing surface (36) biased against a ring-shaped first countersealing surface (48) by a spring urging the first valve body toward the bottom of the inner part (16), the first outwardly directed countersurface (48) is formed by a second valve body (46) movable axially between two end positions, which second valve body has an opening radially inside of the first countersealing surface (48) and radially outside of the first countersealing surface has an inwardly facing second ring-shaped sealing surface (52) and an outwardly facing third ring-shaped sealing surface (58), a respective one of which second and third sealing surfaces in each of the two end positions of the second valve body (46) engages an associated one of second and third countersealing surfaces (54) and (56) provided on the inner part (16).

REFERENCES:
patent: 3189213 (1965-06-01), Nimmo
patent: 3820680 (1974-06-01), Friend
patent: 3937357 (1976-02-01), Burgess
patent: 4023583 (1977-05-01), Parkinson
patent: 4033475 (1977-07-01), Evans
patent: 4836406 (1989-06-01), Benning

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