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:
Jan. 17, 1984
Filed:
May. 20, 1982
Mark J Terlecke, Madison, WI (US);
Graber Industries, Inc., Middleton, WI (US);
Abstract
A venetian blind mechanism having a lead and a plurality of auxiliary carriers supported for traversing movement along a header between a retracted and an extended position and vane supports mounted on the auxiliary carriers for turning about an upright axis for light control. An operating chain is connected intermediate its ends to the lead carrier and has first and second chain portions extending lengthwise of the header in meshing engagement with sprockets on the auxiliary carriers to control spacing between the auxiliary carriers. Chain operating means is associated with the ends of the first and second chain portions for moving them in relatively opposite directions to effect rotation of the vane supports. A chain locking device is provided for automatically locking the chain to the sprocket on an auxiliary carrier when the carriers are retracted, to restrain movement of the operating chain by the chain operating means.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile