The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2020
Filed:
Sep. 27, 2017
Electronic Theatre Controls, Inc., Middleton, WI (US);
Donald A. Hoffend, III, Annandale, VA (US);
Electronic Theatre Controls, Inc., Middleton, WI (US);
Abstract
A lift assembly comprises a base, a drive mechanism, a flexible drive element extending from the drive mechanism along a fleet axis, and a sheave directing the drive element from the fleet axis to an output axis. The sheave is coupled to the base at a first sheave mount aligned with the fleet axis. The assembly can further include a second sheave mount aligned with the fleet axis and configured to be coupled to the sheave to allow the sheave to be de-coupled from the first sheave mount and coupled to the second sheave mount, resulting in substantially no change in a fleet angle of the fleet axis. Preferably, the sheave is positioned on a first side of the fleet axis when coupled to the first sheave mount, and the sheave is positioned on a second side of the fleet axis (e.g., opposite the first side) when coupled to the second sheave mount.