Cam control mechanism

Details Cam control mechanism Cam control mechanism

1979-08-23

1981-08-11

Truhe, J. V.

Electricity: circuit makers and breakers

Retarded

Clock train

74567, 74568FS, H01H 4310

Patent

active

042836077

ABSTRACT:
A cam operated control mechanism wherein a cam follower is caused to move from a first position to a second position by a biasing spring upon completion of a preselected amount of relative movement between the cam follower and cooperating cam. The control mechanism includes a second structure for effecting movement of the cam follower from the first position to the second position in the event the biasing spring fails to effect the movement, such as by virtue of the spring being broken. The structure for effecting the transfer includes a displaceable wall portion of the cam against which the cam follower is urged by means other than the spring means when the relative movement between the cam follower and cam is continued following the failure of the spring means to effect the desired transfer. The control mechanism is advantageously adapted for use in ice makers and the like where it is highly desirable to prevent malfunctioning of the ice maker as a result of such a broken spring in controlling the switch mechanism thereof.

REFERENCES:
patent: 1909138 (1933-05-01), Vollmer
patent: 4130746 (1978-12-01), Linstromberg

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