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:
Nov. 02, 1999
Filed:
Aug. 05, 1998
Applicant:
Inventors:
James V Miller, Glen Ellyn, IL (US);
Garrett C Waecker, Des Plaines, IL (US);
Assignee:
QMI Roll Shutter Supply, Elmhurst, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
E06B / ;
U.S. Cl.
CPC ...
160310 ; 74625 ;
Abstract
The present invention is directed to a modular roll-up partition assembly, such as a rolling protective shutter, implementing an improved mechanism for raising the partition in an emergency by disengaging a motor from a rolling shutter. The mechanism includes a cable that passes through an axial passage in a spring shaft to which a torsion spring is mounted. When the cable is pulled, the coupling mechanism is separated from the motor drive shaft, thereby disengaging the spring shaft from the motor drive shaft and permitting the torsion spring to quickly raise the rolling shutter.