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. 17, 2001
Filed:
Jan. 13, 2000
Other;
Abstract
This invention relates to a pivot-hung door drive system with an electro-mechanical device that supplies the closing moment required for the opening and closing of the door, comprising a transmission which varies its translation ratio over the angle of rotation of the door, a guide that is connected with an output shaft and a driver roller that can execute a translation movement relative to the guide and in the guide, which driver roller is connected with a pinion that is engaged with a toothed rack that is connected with the spring system, whereby the axis of rotation of the output shaft is at a defined distance from the axis of rotation of the pinion, and the axis of rotation of the driver roller is at a defined distance from the axis of rotation of the pinion, such that when the output shaft and pinion are rotated, the translation ratio changes as a result of the changing axial distance between the output shaft and the driver roller.