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:
Oct. 28, 1986
Filed:
Dec. 07, 1983
Applicant:
Inventor:
Per E Lindquist, Easton, PA (US);
Assignee:
SI Handling Systems, Inc., Easton, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61B / ;
U.S. Cl.
CPC ...
104166 ; 104162 ; 198738 ;
Abstract
A driverless tugger vehicle is adapted to shuttle back and forth and push or pull another driverless vehicle each time it moves in a forward direction. The tugger vehicle is propelled by frictional contact between a drive wheel and a drive shaft with the drive wheel being mounted for pivotable movement through an arc of approximately 90 degrees so that the vehicle may reciprocate in opposite directions without changing the direction of rotation of the drive shaft.