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:
Oct. 15, 2013
Filed:
Apr. 25, 2012
Applicant:
Robert C. Hendricks, Columbia, MD (US);
Inventor:
Robert C. Hendricks, Columbia, MD (US);
Assignee:
IdeaWorkx LLC, Gaithesburg, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
A retractable projection screen having a projection screen surface, a lower batten fixed adjacent the bottom of the projection screen surface, an upper batten fixed adjacent the top of the projection screen surface, a winch mandrel, a cable adapted to be fixed to the upper batten and wound around the winch mandrel and an outer roller on which the projection screen surface is wound. An electric motor is coupled to the winch mandrel to rotate the mandrel, thereby raising and lowering the projection screen surface.