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:
Sep. 09, 2003
Filed:
Nov. 30, 2000
Brian R. Dershem, Sanford, NC (US);
David D. Henderson, Sanford, NC (US);
Caterpillar S.A.R.L., Geneva, US;
Abstract
A lift boom assembly includes a pair of lift arm assemblies. Each of the lift arm assemblies include a main lift link with a rear end portion and a second lift link. The second lift links each have a first end portion, a second end portion pivotally connected to a frame of a work machine to define a first pivot, and a central portion pivotally connected to the rear end portion of a respective main lift link to define a second pivot. A pair of control links each having a first end portion that is pivotally connected to the frame of the work machine to define a third pivot. A second end portion of the control links being pivotally connected to a respective one of the main lift links to define a fourth pivot with each of the first, second, third, and fourth pivots being located above the lower portion of the frame. The pivots of the components are located on an upper portion of the work machine so that the components cooperate together to achieve a simple and efficient lift boom design.