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. 21, 1978
Filed:
Apr. 29, 1976
W Gene Stevens, Dunlap, IL (US);
Willis E Windish, Pekin, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A vehicle transmission couples a plurality of input driven planetary arrangements with a plurality of selectable direct drive gear reduction means. The plurality of input driven planetary arrangements include a reverse planetary gear arrangement and in the preferred embodiment two forward planetary gear arrangements. The two forward planetary gear arrangements, each of which includes a ring gear which may be stopped, share a common planet carrier which drives the selectable direct drive gear reduction means. The reverse planetary gear arrangement includes a planet carrier which may be stopped, thus an associated reverse ring gear rotates in an opposite direction relative the input shaft. The reverse ring gear is coupled to the common planet carrier of the forward planet section. The direct drive section includes three drive gears in the preferred embodiment rotatably mounted on a quill shaft driven by the common planet carrier and coaxially mounted about the input shaft. Three driven gears are drivingly mounted on an output shaft, each intermeshing with a driving gear. Drive engagement devices are included to selectively engage one of the drive gears with the quill shaft.