Electric heating – Metal heating – Of cylinders
Patent
1977-06-22
1979-01-09
Grimley, Arthur T.
Electric heating
Metal heating
Of cylinders
200 21, 200 38C, H05B 906
Patent
active
041339983
ABSTRACT:
A cylinder shaped cam member having a longer radius section and a shorter radius section is driven to rotate at a constant velocity around its axis. The ratio of the longer radius section to the shorter radius section is gradually increased along the axis of the cylinder shaped cam member. A contact member associated with an actuator of a normally open switch is disposed in such a manner that the contact member is always brought into contact with the periphery of the cylinder shaped cam member. The normally open switch is closed when the contact member is brought into contact with the longer radius section during the rotation of the cylinder shaped cam member, whereby a magnetron is power supplied through the normally open switch. The location of the contact member is shifted through the use of a suitable selector along the axis of the cylinder shaped cam member, whereby the mean output level of the magnetron is continuously varied in response to the location of the contact member.
REFERENCES:
patent: 3114084 (1963-12-01), Bernaden, Jr. et al.
patent: 3286924 (1966-11-01), Banathy
patent: 3824365 (1974-07-01), Tapper
patent: 4025804 (1977-05-01), Rickard
Grimley Arthur T.
Sharp Kabushiki Kaisha
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