Locking radiator cap

Details Locking radiator cap Locking radiator cap

1989-08-15

1990-05-22

Marcus, Stephen

Receptacles

Closures

Thermal releaser or actuator

220DIG17, 220DIG32, B65D 5500

Patent

active

049270494

ABSTRACT:
A thermally locking radiator cap for fitting on the filler neck flange of an automotive radiator, which prevents the radiator cap from becoming detached from the filler neck flange when the radiator is hot. The cap uses a bi-metallic strip captured on the top surface of the radiator cap and having an end which goes through the opening of the radiator cap and engages the filler neck flange to lock the cap in place. Colors are placed on the bi-metallic strip adjacent to a window at the top of the radiator cap so that when the bi-metallic strip moves as a result of expansion, the colors change to indicate that the cap is either locked or free.

REFERENCES:
patent: 2125419 (1938-08-01), Birk
patent: 2250045 (1941-07-01), Focke et al.
patent: 2528372 (1950-10-01), Kellogg
patent: 3373894 (1968-03-01), Johnson
patent: 3559839 (1971-02-01), Seethaler
patent: 4718705 (1988-01-01), Case

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