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. 20, 1976
Filed:
Jun. 26, 1975
Gunter Honecker, Klein Welzheim, DT;
Kurt Knappe, Sulzbach, DT;
Linde Aktiengesellschaft, Hollriegelskreuth, DT;
Abstract
A load-lifting assembly for a fork-lift truck has a mast formed of three telescoping tubes, an inner tube secured to the support, an intermediate tube slidable on the inner tube, and an outer tube slidable on the intermediate tube and carrying a carriage on which the fork is mounted. A cable or chain has one end secured to the intermediate tube and is passed over a roller on the top end of the outer tube and secured to the carriage. The three-stage ram has a first member inside the inner tube and secured to the support, a second tubular member slidable on the first member and linked to the intermediate tube, and a third member slidable on the intermediate member and secured to the outer tube. The effective piston area of the third member is greater than that of the second member so that on pressurization of the interior of the ram the third member will move up relative to the first and second members before the second member moves up.