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. 22, 2008
Filed:
Nov. 06, 2006
Klaus Bellingroth, Gummersbach, DE;
Klaus Bellingroth, Gummersbach, DE;
Abstract
The invention concerns a linear drive () with a linear stroke for the displacement of movably supported parts, in particular of articles of furniture, comprising a rotary spindle () which is driven by a motor and which at the drive output side is in screwthreaded engagement with a thrust tube () or a spindle nut () connected thereto with a female screwthread (), wherein the thrust tube () is mounted non-rotatably and slidably in the housing () and is displaceable in the housing () over a stroke travel h relative to the rotary element, and a travel measuring device for measuring the stroke travel h. With the aim of developing a linear drive () in such a way that it is uncomplicated and inexpensive, operates reproducibly accurately and even after power shut-down does not require renewed zeroing for travel measurement, it is proposed that the travel measuring device has a linear potentiometer device () with a linear potentiometer () and that the linear potentiometer () for linear measurement of the stroke travel h is arranged parallel to the stroke travel.