Method of making an actuating member for a thermostatically cont

Details Method of making an actuating member for a thermostatically cont Method of making an actuating member for a thermostatically cont

1979-09-13

1981-08-18

Crane, Daniel C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29405, 29173, 236 345, B23P 1300, F01P 716, B23P 1500

Patent

active

042838231

ABSTRACT:
A thermostatically controlled valve, of the type used in a cooling system of an internal combustion engine, has a temperature-responsive actuating member, for opening and closing the valve, in the form of a metal coil having shape memory effect such that its modulus of elasticity increases rapidly at a critical temperature. The actuating member is calibrated prior to assembly in the valve by heating the member to the critical temperature and reducing its length to that at which the valve will begin to open by cutting the member while preventing overheating.

REFERENCES:
patent: 716680 (1902-12-01), Daniels et al.
patent: 1779131 (1930-10-01), Holness
patent: 2145989 (1939-02-01), Merten
patent: 2268723 (1942-01-01), Scherer
patent: 2948954 (1960-08-01), Ramsa
patent: 3645443 (1972-02-01), Willson et al.

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