Latching mechanism for locking an actuating shaft and...

Details Latching mechanism for locking an actuating shaft and... Latching mechanism for locking an actuating shaft and...

2006-05-02

2006-05-02

Lee, Kyung (Department: 2832)

Electricity: circuit makers and breakers

Contact moved by sudden release of stored energy,

C200S401000, C335S172000

Reexamination Certificate

active

07038155

ABSTRACT:
A latching mechanism is for locking an actuating shaft of an electrical switch, which can be transferred from an OFF position into an ON position by a drive train counter to the force of at least one first spring, in its ON position. The latching mechanism includes a first lever, which is pivotably coupled to the drive train of the actuating shaft and is supported against a stop held in a locking position. For accelerated release of the actuating shaft, also provided is a second lever, which has a working surface assigned to the stop. In this case, the second lever is held in a first stop position against the first lever by way of a second spring. When the second lever pivots under the action of an initiating force, which opposes the force of the second spring, the working surface acts in such a way on the stop that the stop is transferred into a release position. In order to release the actuating shaft more quickly, the forces of the two springs act independently of one another on the first lever, so that a mechanism which provides the initiating force can be formed independently of the drive train.

REFERENCES:
patent: 5290982 (1994-03-01), Beck et al.
patent: 5543595 (1996-08-01), Mader et al.
patent: 5772009 (1998-06-01), Rogers et al.
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patent: 6222143 (2001-04-01), Lawson et al.
patent: 6437670 (2002-08-01), Castonguay et al.
patent: 6507256 (2003-01-01), Castonguay et al.

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