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:
May. 22, 1979
Filed:
Dec. 23, 1977
Applicant:
Inventor:
Howard C Hansen, Battle Creek, MI (US);
Assignee:
Clark Equipment Company, Buchanan, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ; B66F / ;
U.S. Cl.
CPC ...
187 95 ; 187 / ; 414670 ;
Abstract
A system for reducing the lateral bending moments and deflection in side loading telescopic uprights, such as for lift trucks. Hydraulic actuated restraint device is mounted between each adjacent pair of upright rails, as well as between the inner rails and fork carriage in a lift truck. The restraint device is energized under controlled conditions, such as when a load on a fork carriage is extended to one side of the upright, to lock together each adjacent pair of upright rails and the fork carriage so as to form a rigid column of each side of the upright.