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:
Feb. 02, 1993
Filed:
Mar. 31, 1992
John Styfhoorn, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Apparatus for crushing and severely reducing the overall dimensions of used fluid filters before they are discarded includes a housing assembly having a base portion, a head portion, and side wall portions joining the base portion to the head portion. First and second cylindrical sleeves positioned within the housing substantially completely enclose each filter during the crushing operation. During the crushing operation, each filter rests on the base portion and a hydraulically operated ram assembly forces a piston against the filter and crushes the filter between the base portion and the piston. The side walls portions and the first cylindrical sleeve restrict lateral movement of the piston and filter during the crushing operation. A considerable amount of used fluid is re-claimed from the filters as a result of the crushing operation.