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:
Feb. 19, 2008
Filed:
Aug. 03, 2004
David R. Militello, Rohnert Park, CA (US);
Barry L. Shevick, Fair Oaks, CA (US);
Robert L. Lathrop, Iii, Santa Clara, CA (US);
Bruce R. Dendulk, Ripon, CA (US);
David R. Militello, Rohnert Park, CA (US);
Barry L. Shevick, Fair Oaks, CA (US);
Robert L. Lathrop, III, Santa Clara, CA (US);
Bruce R. Dendulk, Ripon, CA (US);
Shades Unlimited, Inc., Cotati, CA (US);
Abstract
A lifting mechanism is provided for a window covering which allows a bottom rail of the window covering to maintain a static position unless raised or lowered by a user. The lifting mechanism is included within either a top or bottom rail of the window covering. The lifting mechanism includes cords which pass from a rail including the lifting mechanism to a rail not including the lifting mechanism and about cord redirectors located within the rail including the lifting mechanism. The lifting mechanism includes spools and associated springs for gathering excess portions of the cord thereon. A progressive resister is coupled to the spools with the progressive resister providing different amounts of resistance to spool rotation depending on the amount of cord upon each spool.