Locking apparatus

Details Locking apparatus Locking apparatus

2008-07-29

2008-07-29

Lee, K. Richard (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Latches

C200S043010, C200S043110, C200S050110

Reexamination Certificate

active

11699521

ABSTRACT:
A locking apparatus for a manual actuation device of a switchboard plant has a trigger mechanism that is activated by an absence of a backup or a defective backup, and a locking mechanism for the manual actuation device. The locking mechanism is coupled to the trigger mechanism and is transferable by the trigger mechanism from a first position releasing the manual actuation device into a second position locking the manual actuation device. The locking apparatus has a simple and cost-effective construction, it is proposed that the locking mechanism has a cover plate which is displaceable between two positions by the trigger mechanism and which, in its first position, blocks a lever configuration under tensile force, of the locking mechanism and, in its second position, releases the lever configuration in order to lock the manual actuation device.

REFERENCES:
patent: 4219714 (1980-08-01), Suzuki et al.
patent: 5823321 (1998-10-01), Leclerc
patent: 5835002 (1998-11-01), Barnett
patent: 6207909 (2001-03-01), Tallman et al.
patent: 6610946 (2003-08-01), Covell et al.
patent: 6958455 (2005-10-01), Lui

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