Vibrator

Details Vibrator Vibrator

1977-08-24

1978-09-26

Duggan, Donovan F.

Electricity: motive power systems

Reciprocating or oscillating motor

Stopping after predetermined number of reciprocations or...

310 77, 310 79, H02K 3302

Patent

active

041173813

ABSTRACT:
A base yieldably supporting a frame, on which an electromagnetic assembly is mounted, is fixedly secured to a more massive body to which an armature is elastically connected by coupling springs. Limit switches control initiation and termination of a timer controlled cycle during which the electromagnetic assembly is energized to cause advancement of the armature under magnetic attraction followed in sequence by acceleration of the massive body and the frame under the urge of the elastically deformed springs.

REFERENCES:
patent: 2271382 (1942-01-01), Worthington
patent: 2539391 (1951-01-01), Alvord
patent: 2610995 (1952-09-01), Orsatti et al.
patent: 3170078 (1965-02-01), Kuschel
patent: 3733500 (1973-05-01), Mushrush

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