Patent · US Active

Lift assembly systems and methods

US11511978B2 · kind B2 · utility

0Cited by

71References

14Claims

0Family size

Assignee

Electronic Theatre Controls, Inc. · US

Inventors

Donald A. Hoffend, III · Winston-Salem, US
William R. Florac · Verona, US
Michael Lichter · Holzkirchen, DE
Edwin W. Bolz · Queensbury, US

Key dates

Filing date	Mar 9, 2021
Grant date	Nov 29, 2022
Priority date	—
Expiry date	Mar 9, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01L5/107
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A lift assembly including an article to be lifted between a lowered position and a raised position, a flexible drive element coupled to the article and defining a longitudinal axis, a power mechanism coupled to the flexible drive element, a drum powered by the power mechanism and dimensioned to facilitate winding of the flexible drive element onto the drum, and a cable keeper providing a force on the flexible drive element to bias the flexible drive element toward the drum.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.