Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1981-03-12
1983-02-22
Wayner, William E.
Heat exchange
Movable heating or cooling surface
Rotary drum
165 11R, 236 47, 337361, F25B 2900, H01H 3772
Patent
active
043745415
ABSTRACT:
A thermostat has a temperature responsive element coupled to a pivoted arm which closes the circuits to operate temperature control apparatuses. A slotted cam with leaf spring members projecting from one end is slidably mounted to move toward or away from the pivoted arm in response to removing or replacing a weight which operates a cam follower element connected to the slotted cam. When the slotted cam is positioned away from the pivoted arm, the thermostat operates in conventional fashion. When the slotted cam is positioned toward the pivoted arm, the arm has the additional load of the leaf spring members to overcome, and the set point temperature of the thermostat is changed.
REFERENCES:
patent: 1460128 (1923-06-01), Hill
patent: 3667539 (1972-06-01), Sweger
patent: 4060123 (1977-11-01), Hoffman et al.
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