Means for locking the dial of a temperature controller

Details Means for locking the dial of a temperature controller Means for locking the dial of a temperature controller

1988-11-14

1990-01-23

Lindsey, Rodney M.

Machine element or mechanism

Control lever and linkage systems

Elements

74553, G05G 506

Patent

active

048950432

ABSTRACT:
Means for locking the dial of a temperature controller according to the present invention comprises a push rod for locking the controller when pushed once and releasing the locking to return to the original position when pushed anew, said push rod being installed inside the controlling shaft of the controller, a locking pin for reciprocating upwardly and downwardly along the periphery of the controlling shaft by pushing of the push rod, and a locking bracket for catching the upper end of the locking pin to prevent the rotation of the controlling shaft when the locking pin reaching the upward position.

REFERENCES:
patent: 599245 (1898-02-01), Merrill
patent: 1889175 (1932-11-01), Evans
patent: 2407696 (1946-09-01), Webster
patent: 2438045 (1948-03-01), Gerhardt et al.
patent: 3100404 (1963-08-01), Boeddeker et al.
patent: 4431881 (1984-02-01), Sauer et al.

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