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. 28, 1999
Filed:
Apr. 29, 1998
Calvin J Brandt, Delano, MN (US);
Motion Controls, Inc., Delano, MN (US);
Abstract
A rail car indexer that provides a continuous transfer of the rail car bogeys from one dog to the next without ramming into the rail car axles in either the forward or rearward directions. The rail car indexer includes two parallel linearly offset progressor each of which has a barney and dog attached thereto. A center balance and back pressure bypass valve are used to control the raising of the dogs and to insure that the dogs remain in their lowered position until the proper progressor is ready to begin pulling on the rail car bogey axle. Sensors and a photo eye emitter and receiver coordinate the extension, retraction and transfer of an axle between the progressors.