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. 28, 1991
Filed:
May. 25, 1990
Michael A Roussin, Peoria, IL (US);
Charles M Crowell, Jr, Trivoli, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Impact rippers are useful for transmitting high impact blows to a hard material for fracturing the material. When linear reciprocating rams are used, a mounting arrangement which will withstand high compressive forces and still allow the ram to reciprocate must be used to mount the ram within a tool holder. The subject impact ripper apparatus includes a tool holder having a cavity for mounting a linear ram. The linear ram is mounted within the cavity by a plurality of laminated pads which withstand compressive force, but still allows the ram to reciprocate. This arrangement which is stiff in compression, but relatively soft in shear.