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:
Mar. 10, 1981
Filed:
Mar. 09, 1979
David F Huempfner, Two Rivers, WI (US);
Douglas A Rippe, Two Rivers, WI (US);
Robert E Martin, Two Rivers, WI (US);
American Hospital Supply Corporation, Evanston, IL (US);
Abstract
An elevator for raising and lowering a hospital stretcher or the like without binding. The stabilized elevator has a pair of intermeshed timing gears at each end of the elevator which are connected by horizontal axles that are rotationally secured to a first telescoping section of the elevator. Each timing gear intermeshes with a vertical toothed rack secured to a second telescoping section adjacent each gear. The intermeshing timing gears and racks cooperate to keep the telescoping elevator from binding, particularly when the stretcher or the like has a heavier load at one end than the other.