B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
B66B 5/00 (2006.01) B66B 1/46 (2006.01)
Patent
CA 2600955
Method of operating a lift installation (10) with at least one upper lift cage (A1) and at least one lower lift cage (A2), with a first switching mechanism (21), at which is fastened - at an elongate run (24) - a weight (23), by the weight force (G) of which the first electromechanical switching mechanism (21) is held in a travel setting, and with a second electromechanical switching mechanism (22) fastened vertically below the weight (23) fastened to the run (24). In the case of undesired approach of the two lift cages (A1, A2) the weight (23) impinges on the second electromechanical switching mechanism (22) and thereby opens a safety circuit of the lower lift cage (A2). The safety circuit of the upper lift cage (A1) is also opened by a diminishing of the weight force (G).
Gisler Georges
Kocher Hans
Ag Inventio
Riches Mckenzie & Herbert Llp
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