Temperature-detection type change-over valve

Details Temperature-detection type change-over valve Temperature-detection type change-over valve

1980-03-28

1982-06-22

Tapolcai, Jr., William E.

Internal-combustion engines

Spark ignition timing control

Electronic control

236 86, 251337, G05D 2312

Patent

active

043356907

ABSTRACT:
A temperature-detection type change-over valve for switching the state of communication between a plurality of passages, suitable for use in combination with a controller for controlling the operation of an internal combustion engine. The valve has a thermally expandable member adapted to expand when heated, a shaft adapted to be pressed and moved in one direction as the thermally expandable member expands, a valve movable following the movement of the shaft between a first and a second position for switching the state of communication of passages, and a tension spring disposed to surround the shaft and adapted to exert a biasing force to act against the force generated by the expansion of the thermally expandable member.

REFERENCES:
patent: 2638925 (1953-05-01), Monahan
patent: 2725076 (1955-11-01), Hansen et al.
patent: 3800759 (1974-04-01), Cedar
patent: 3841551 (1974-10-01), Ota
patent: 3960321 (1976-06-01), Steele, Jr.
patent: 4036433 (1977-07-01), Wagner et al.
patent: 4142675 (1979-03-01), Maltby
patent: 4244343 (1981-01-01), Yamaguchi et al.

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