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:
Oct. 04, 2011
Filed:
Jun. 14, 2006
Lauritz Phillip Pillers, Ii, Shorewood, IL (US);
Chunhui Pan, Dunlap, IL (US);
Lauritz Phillip Pillers, II, Shorewood, IL (US);
Chunhui Pan, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A tool assembly (), for example a hydraulic or pneumatic hammer assembly, comprises a housing () defining a chamber (), a reciprocating work tool () arranged in the chamber for cyclical movement in a work stroke and a return stroke, and a tool retention member () arranged to restrain the work tool at the end of the work stroke. The tool assembly () includes a shock absorber arranged to absorb impact from the work tool at the end of a stroke. The shock absorber comprises an annular resilient flange (), which may be cantilevered from the tool retention member () to absorb impact at the end of the work stroke or may be provided on a bushing () arranged to absorb impact at the end of the return stroke. The shock absorbing flange reduces the transmission of shocks into the tool assembly, thereby providing increased life for tool assembly components.