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:
Apr. 13, 1993
Filed:
Feb. 19, 1992
John B Whitaker, Jr, Wetumpka, AL (US);
Keshaw Manufacturing Company, Inc., Wetumpka, AL (US);
Abstract
A ballast metering method and apparatus is disclosed which utilizes a rail mounted metering hopper having a set of forward discharge outlets for directing ballast laterally and downwardly beneath the rails under the pressure of a volume of ballast retained in the hopper. This volume is maintained at a continuously maintained level by selective addition of ballast to the hopper. The discharged ballast forms a pair of spaced apart windrows beneath the rails which is graded to a predetermined height by a sub-track grader blade associated with the hopper. A center discharge opening at the rear of the hopper allows ballast to be directed between the graded windrows. A pair of lateral chutes permit discharge of ballast outwardly of the rails.