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:
Sep. 20, 1988
Filed:
Oct. 21, 1987
W Gene Stevens, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A countershaft transmission includes first and second directional clutches and first, second and third speed clutches of the hydraulically actuated, rotating disc type to provide three forward speeds and three reverse speeds for a track-type tractor or the like. Included is an input shaft with first and second gears connected to rotate therewith that define midplanes normal to the input shaft. The directional clutches and the speed clutches are located axially between the midplanes in radially aligned relationships and a plurality of other constantly meshing gears are used including at least one pair of gears located axially exteriorly of the midplanes for compactness and to promote speed reduction ratio flexibility. A second embodiment provides six forward speeds by adding a directional clutch and another gear within the same compact dimensions.