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:
Jun. 18, 1985
Filed:
Jan. 17, 1983
Robert M Mortellite, Hamilton, OH (US);
Clopay Corporation, Cincinnati, OH (US);
Abstract
A combination window shade and clutch assembly is provided to prevent over-tensioning of the spring motor of the window shade. The clutch assembly includes spool means connected to one end of the spring motor and cup means, both movable along the window shade shaft. The spool means and cup means are provided with clutch means in the form of mating, tapered locking surfaces adapted to engage one another. The cup means engages retaining means formed in the rotatable housing of the window shade so that rotation of the housing is transmitted to the spool means through the cup means while their locking surfaces are in engagement. The clutch means interconnecting the cup means and spool means is operable to maintain engagement therebetween to permit tensioning of the spring motor a predetermined number of turns of the cup means and spool means together with window shade housing in one direction, and then is operable to disengage the cup means from the spool means to prevent additional tensioning of the spring motor without restricting further rotation of the housing in such one direction.