Patent ID: 7219770
Filing Date: 2007-05-22
Classification: B66F

Abstract:
1. A wireless lift system for coordinated lifting of a structure and comprising: (a) a first lift mechanism and a second lift mechanism; (b) each of said first and second lift mechanisms including a support frame including a vertical guide member, a carriage slidingly engaged with said guide member and adapted to supportively engage a structure to lift and/or lower the structure, an actuator engaged between said support frame and said carriage, and a controller coupled to said actuator and programmed to enable selective activation of said actuator to thereby lift and/or lower said structure; (c) each lift mechanism including a radio-frequency (RF) transceiver coupled to the controller associated therewith to enable wireless communication between controllers of said lift mechanisms; (d) the controller of each lift mechanism being programmed to enable cooperation of said lift mechanisms by way of the RF transceivers thereof to enable coordinated lifting and/or lowering of said structure; (e) each RF transceiver including circuitry to enable operation on any of a plurality or RF channels; and (f) each RF transceiver having a channel selector switch coupled thereto and operable to enable field selection of one of said RF channels.