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US6902022: Tractor having a convertible front end and variable track width and related methods

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Filing Information

Inventor(s) Shri Bhanjibhai Mathukia ·
Assignee(s) Society for Research and Initiatives (SRISTI) ·
Attorney/Agent(s) Kirkpatrick & Lockhart Nicholson Graham LLP ·
Primary Examiner Paul N. Dickson ·
Assistant Examiner Laura B. Rosenberg ·
Application Number US10294962
Filing date 11/14/2002
Issue date 06/07/2005
Prior Publication Data
Predicted expiration date 05/02/2023
Patent term adjustment 169
U.S. Classifications 180/209  · 280/638  · 180/906  · 180/376  · 280/149.1  · 180/374  ·
International Classifications --
Kind CodeB2
International Classifications 280 92 · 280638 · 2801491 · 180374- 6 · 180209 · 180210 · 180906 ·
Related U.S. Application DataCROSS-REFERENCE TO RELATED APPLICATIONS
This application claims the benefit of and priority to U.S. Provisional Patent Application No. 60/388,356, filed on Jun. 13, 2002, the entire disclosure of which is hereby incorporated by reference.
4 Claims, 8 Drawings


Abstract

A tractor having a front end and a rear end adaptable for a variety of different environments. Methods related to the conversion of the tractor are also disclosed. In one embodiment, the invention includes a front wheel assembly that is removably attached to the front end of the tractor to facilitate adaptation of the tractor a various environments. Also, a steering actuator is removably attached to the front wheel assembly and fixedly attached to the chassis of the tractor.

Independent Claims | See all claims (4)

  1. 1. A tractor having a front end and a rear end, said tractor being adaptable to a plurality of front wheel assemblies, said tractor comprising: one of said plurality of front wheel assemblies; an attachment mechanism at said front end of said tractor, said attachment mechanism configured to selectively attach said one of said plurality of front wheel assemblies to said front end of said tractor; a steering actuator, said steering actuator being fixedly attached to a steering mechanism of said tractor, and being selectively attached to said one of said plurality of front wheel assemblies; and a power transmission unit, the power transmission unit comprising: a clutch assembly; a gear box in communication with the clutch assembly, said gear box comprising: an input shaft for providing power from an engine of said tractor, a first output shaft in communication with said input shaft, said first output shaft comprising two gears, a first gear for providing a low range speed and a second gear for providing a high range speed; a lay shaft in communication with said first output shaft, said lay shaft comprising a first gear, a second, and a reverse gear; and a second output shaft in communication with said lay shaft and in removable communication with said first output shaft, said second output shaft comprising a first shifter gear in removable communication with said first gear of the lay shaft and said reverse gear of said lay shaft, and a second shifter gear in removable communication with said second gear of said lay shaft and a set of splines; and a rear end differential box in communication with said gear box, said rear end differential box comprising a set of final gears for delivering power to said rear end of said tractor, wherein each of said gears of the gear box and said rear end differential is viewable when a top cover of each of said gear box and said rear end differential box is removed.
  2. 2. A method of facilitating the conversion of a tractor having a front end and a rear end for use in a variety of environments comprising: removing a first one of a plurality of front wheel assemblies from said front end of said removing a steering actuator from said first one of said one of said plurality of front wheel assemblies; attaching a second one of said plurality of front wheel assemblies to said front end of said attaching said steering actuator to said second one of said plurality of front wheel assemblies; removing a first rear wheel from a rear axle; attaching a first spacer to said rear axle; and attaching said first rear wheel to said first spacer to thereby control a width of said rear end of said tractor.

References Cited

U.S. Patent Documents

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Foreign Patent Documents

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* cited by examiner

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