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. 28, 1978
Filed:
Dec. 23, 1976
Henry T Therkildsen, East Peoria, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
The invention relates to an improvement in a drum rotating apparatus which comprises an input gear, a drive train for selectively drivingly rotating the input gear about its axis in a first and in a second direction, a transfer gear meshing with the input gear and driven thereby, a shaft rotatably driven by the transfer gear and having teeth thereon, an output gear meshing with the teeth on the shaft and driven thereby and a drum secured to the output gear to rotate therewith. The improvement comprises a normally engaged coupling intermediate the transfer gear and the shaft and hydraulic disengaging apparatus which serves to disengage the normally engaged coupling to allow the drum to rotate unencumbered by the input gear and the drive train.