Timer with improved clutch and method of manufacturing the same

Details Timer with improved clutch and method of manufacturing the same Timer with improved clutch and method of manufacturing the same

1988-07-22

1989-03-07

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

368191, 200 38R, G04F 306, H01H 4310

Patent

active

048113123

ABSTRACT:
A timer includes a cam driven by a motor and a clutch for permitting the cam to be turned independently of the motor. The clutch includes a clutch plate having a toothed rim, the plate sandwiched between a pair of spring washers, and a tubular eyelet passing through openings in the plate and washers. The clutch assembly is placed on a mandrel and the washers are spun while the teeth on the plate engage a force gauge. The end of the eyelet is flared to fasten the clutch assembly together with a force which provides a predetermined torque between the plate and washer as measured by the force gauge.

REFERENCES:
patent: 3742159 (1973-06-01), Brown
patent: 3780240 (1973-12-01), Stafford et al.
patent: 3837161 (1974-09-01), Huntrich
patent: 3930362 (1976-01-01), Cielasztr
patent: 4182112 (1980-01-01), Strachan
patent: 4203014 (1980-05-01), Harris
patent: 4490589 (1984-12-01), Voland

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