Spring drive for a switching apparatus

Details Spring drive for a switching apparatus Spring drive for a switching apparatus

1994-10-25

1997-01-21

Luebke, Renee S.

Electricity: circuit makers and breakers

Gear driven

74462, 200400, H01H 340

Patent

active

055952879

ABSTRACT:
A spring drive for an electrical switching apparatus has a switch-on shaft to which a switch-on spring is coupled eccentrically and on which a large wheel (16) is seated in a rotationally fixed manner. A small wheel (20), which is driven in order to stress the switch-on spring, interacts with the large wheel (16). A tooth system (52) on the large wheel (16) has a gap (54) for decoupling the wheel pair (18) formed by large wheel (16) and small wheel (20) when the switch-on spring is stressed. In order to connect the switching apparatus, the large wheel (16) is driven in a rotation direction (D), as a result of which the tooth system (52) engages with the small wheel (20) again. In order to prevent blocking when the teeth engage in one another, the teeth (60) on the small wheel (20) are constructed in such a manner that the edges (56, 58) abut against one another radially on an outer side at a common edge (62).

REFERENCES:
patent: 3072763 (1963-01-01), Goodwin, Jr.
patent: 3203505 (1965-08-01), Hannauer
patent: 3220279 (1965-11-01), Dareing
patent: 3890853 (1975-06-01), Feltz
patent: 4649244 (1987-03-01), Baginski et al.
patent: 4653340 (1987-03-01), La Bate

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