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. 06, 2009
Filed:
May. 23, 2006
Robin C. Moseley, Macungie, PA (US);
Wendy Margaret Moseley, Legal Representative, Macungie, PA (US);
David A. Kirby, Emmaus, PA (US);
Justin Mierta, Allentown, PA (US);
Thomas W. Brenner, Wescosville, PA (US);
Robin C. Moseley, Macungie, PA (US);
Wendy Margaret Moseley, legal representative, Macungie, PA (US);
David A. Kirby, Emmaus, PA (US);
Justin Mierta, Allentown, PA (US);
Thomas W. Brenner, Wescosville, PA (US);
Lutron Electronics Co., Inc., Coopersburg, PA (US);
Abstract
Calibration of a motorized roller shade is accomplished by calculating a radius of a roller tube and thickness of a shade fabric rotatably supported by the roller tube. First, a lower edge of the shade fabric is moved to a first position at a first linear distance from a predetermined position. Second, a first number of revolutions of the roller tube between the first position and the predetermined position is determined. Next, the lower edge of the shade fabric is moved to a second position at a second linear distance from the predetermined position and a second number of revolutions between the second position and the predetermined position is determined. Finally, the tube radius and the fabric thickness are calculated from the first and second linear distances and the first and second numbers of revolutions. The tube radius and the fabric thickness are used to control the linear speed of the lower edge of the shade fabric.