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:
Dec. 08, 2015
Filed:
Nov. 13, 2012
Lincoln Global, Inc., City of Industry, CA (US);
Victor B. Miller, Jamul, CA (US);
Jamil C. Snead, San Diego, CA (US);
Richard D. Traver, San Diego, CA (US);
LINCOLN GLOBAL, INC., City of Industry, CA (US);
Abstract
A tractor unit system includes a tractor unit that has a travel drive gear. The travel drive gear includes a drive gear portion and at least one drive roller portion. The system also includes a guide track that has a track gear. The track gear includes a track gear portion and at least one land portion. The at least one drive roller portion and the at least one land portion are configured such that the at least one drive roller portion contacts the at least one land portion when the drive gear portion is engaged to the track gear portion. In some embodiments, a diameter of the at least one drive roller portion is equal to a pitch diameter of the drive gear portion. If the track gear portion is curved, in some embodiments a diameter of the at least one land portion equals a pitch diameter of the track gear portion. In other embodiments, if the track gear portion is straight, a dimension of the at least one land portion equals a pitch line of the track gear portion.