Cam-operated timer quiet cycle selector

Details Cam-operated timer quiet cycle selector Cam-operated timer quiet cycle selector

1998-06-29

1999-11-23

Wong, Peter S.

Electricity: circuit makers and breakers

Retarded

Clock train

200 38B, H01H 708

Patent

active

059904267

ABSTRACT:
An appliance timer has features to facilitate automated assembly or manual assembly. A timer housing base accepts timer components from two directions, and installation of components in either direction is along a straight axis. A motor in the timer engages a gear train which runs a drive cam. The drive cam imparts motion to a camstack which then engages timer blade switches, and the blade switches operate the appliance. A subinterval is also supplied on the timer to allow periodic operation of a switch without the use of the camstack. The timer also features a quiet manual advance which removes the blade switches from communication with the camstack to allow an operator to select various timer programs without any of the clicking noises that are usually associated with timer program selection. Furthermore, a detent slider is positioned in communication with the camstack to provide a tactile feel for the operator of the timer when selecting between various timer programs.

REFERENCES:
patent: 4335282 (1982-06-01), Adams et al.
patent: 4421110 (1983-12-01), Wojtanek
patent: 4675478 (1987-06-01), Song
patent: 4796484 (1989-01-01), Eder
patent: 5290978 (1994-03-01), Georgacakis et al.
patent: 5652418 (1997-07-01), Amonett
patent: 5652419 (1997-07-01), Amonett et al.
patent: 5684281 (1997-11-01), Amonett

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