Electronic Theatre Controls, Inc.

William R Florae

Donald Aloysius Hoffend, Iii

Edwin William Bolz

Michael Lichter

A lift assembly includes an article to be lifted between a lowered position and a raised position, a drive element coupled to the article, a power mechanism coupled to the drive element, and a power transfer mechanism coupled between the power mechanism and the drive element. The power transfer mechanism includes control electronics having a first upward limit switch adapted to deactivate the power mechanism when the article is lifted to a first upward height, and a second upward limit switch adapted to deactivate the power mechanism when the article is lifted to a second upward height higher than the first upward height.

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Verona, WI, United States of America

William R Florae