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:
Jul. 01, 2014
Filed:
Jun. 03, 2009
Ole Fejer, Grevinge, DK;
Jens Jørren Sørensen, København, DK;
Ole Fejer, Grevinge, DK;
Jens Jørren Sørensen, København, DK;
VKR Holding A/S, Horsholm, DK;
Abstract
A push-pull chain actuator () comprises a housing with a chain exit/entry opening () and a sprocket () arranged to engage a push-pull chain (). The sprocket () causes the polygon effect. The actuator comprises a first chain guide part () for guiding said push-pull chain () around the sprocket () and a second chain guide part () for guiding said push-pull chain () at the correct angle between the chain exit/entry opening () and the sprocket (). The second chain guide part () is shaped as a meandering path to counteract the polygon effect. Alternatively, the second chain guide part () can be shaped and dimensioned to reduce chain oscillations caused by the rollers () engaging or disengaging the chain exit/entry opening () at the end of the second chain guide part ().