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:
Nov. 20, 2012
Filed:
Sep. 15, 2008
Tom Toft Kragh, Sønderborg, DK;
Martin Kahr Knudsen, Sydals, DK;
Tom Toft Kragh, Sønderborg, DK;
Martin Kahr Knudsen, Sydals, DK;
Linak A/S, Nordborg, DK;
Abstract
A lifting column for treatment tables, hospital- and care beds with a casing consisting of three telescopic members () with a drive unit located in the hollow of the intermediate member (). The drive unit comprises a body element () with chain wheels () and one chain () provided with driving rods () secured to the two other telescopic members (). The drive unit further comprises a linear actuator () with an electric motor (), which drives a spindle () located within the cross section of the body element () and a spindle nut () secured thereto for longitudinal displacement of the body element () with the chain wheels (), so that the telescopic members () are extended or retracted depending on the direction of rotation of the motor. Thus a compact structure is achieved as the guide is constructed as a casing and the actuator is integral with the body element which has one chain only.