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:
Aug. 29, 2000
Filed:
Nov. 17, 1998
John E Messenger, Newville, PA (US);
Ingersoll-Rand Company, Woodcliff Lake, NJ (US);
Abstract
An extendable boom for a material handling device includes a first boom section for connection to a support frame, the first boom section having a plurality of first structural members. A second boom section is slidable with respect to the first boom section, for supporting a load to be moved and carried. The second boom section has a plurality of second structural members. Wear pads are positioned between the first and second structural members, the wear pads being a cast polyamide material with oil impregnated therein and subjected to dynamic compressive loading condition characterized by a PV value between 26,400 and 32,000. A method to manufacture the extendable boom is also claimed.