Tensioning device for the driving spring of an energy store for

Details Tensioning device for the driving spring of an energy store for Tensioning device for the driving spring of an energy store for

1987-07-10

1989-02-21

Scott, J. R.

Electricity: circuit makers and breakers

Contact moved by sudden release of stored energy,

H01H 302

Patent

active

048067156

ABSTRACT:
Tensioning device for a driving spring of an energy store for an electrical switch, the device including: a drive shaft carrying a crank articulated to the driving spring; a rotatable tensioning shaft; mechanism connected for rotating the tensioning shaft; at least one overrunning clutch coupled to the drive shaft; and a transmission mechanism connected between the tensioning shaft and the drive shaft for imparting at least one unidirectional stepwise rotational advance to the drive shaft with each revolution of the tensioning shaft, wherein the tensioning shaft and the transmission shaft have respective axes of rotation which are nonparallel to one another.

REFERENCES:
patent: 4409449 (1983-10-01), Takano et al.
patent: 4655098 (1987-04-01), Marquardt et al.
AEG, Sachsenwerk, Operating Instructions Manual "Three-Pole Vacuum Circuit Breaker Type VA with One Vacuum Bottle for Each Breaker Pole"; No. 531,171, May, 1986.

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