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:
Dec. 21, 2010
Filed:
Aug. 08, 2008
Applicant:
Donald A. Hoffend, Jr., Pittsford, NY (US);
Inventor:
Donald A. Hoffend, Jr., Pittsford, NY (US);
Assignee:
Daktronics Hoist, Inc., Brookings, SD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66D 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lift assembly having a drum rotatably mounted to a frame and linearly translatable with respect to one or more portions of the frame. A plurality of head blocks can be connected to the frame along a helical mounting path, wherein linear translation of the drum during takeoff or take-up can maintain a predetermined fleet angle between a take off point from the drum and the head block.