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. 30, 1999
Filed:
Mar. 25, 1998
Jeffrey A Deneve, Sanford, NC (US);
Owen S Loughrin, Sanford, NC (US);
Charles T McMillan, Sanford, NC (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
The box boom lift arm assembly of the present invention includes a single plate steel top wall and a bottom wall connected with a substantially non-transverse weld to a pair of single plate steel inner side walls and a pair of single plate steel outer side walls to define a closed box section having a rectangular cross section along the entire length, varying only in height and width. The unique configuration and shape of the plates and the use of non-transverse weld during manufacturing improve the fatigue characteristics, load distribution and strength of the box boom lift arm assembly without increasing the weight of the machine.