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:
Dec. 22, 1981
Filed:
Apr. 03, 1980
Kurt H Frentzel, Zevenhoven, NL;
Herman Oskam, Bergambacht, NL;
Other;
Abstract
A carrier for a louver of a vertical venetian blind is disclosed for supporting a louver for rotation about its vertical axis and for transport along the headrail, which carrier includes a drive mechanism for rotating the louver about its vertical axis. The drive mechanism is disclosed as including a worm and a gear arrangement with a slip clutch disposed between the worm and the drive shaft. In one embodiment, the slip clutch comprises a slotted sleeve mounted on the drive shaft inside the hub of the worm, which sleeve has lugs positioned to engage a stop on the gear to effect the opening of its slot and reduction of its frictional contact with the drive shaft. In second embodiment, the worm itself frictionally engages about the guide shaft and has a slot along its length with the ends of the slot receiving wedge-like cams integral with rings loosely mounted on the drive shaft. Upon one carrier striking an adjacent carrier, the wedge-like cams widen the slot in the worm hub, thus reducing its frictional engagement with the drive shaft.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile