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:
Sep. 29, 2020
Filed:
Oct. 23, 2017
Herzog Railroad Services, Inc., St. Joseph, MO (US);
Nathan A. Landes, St. Joseph, MO (US);
Khristopher R. Wall, St. Joseph, MO (US);
Stephen Bedingfield, Savannah, MO (US);
Douglas P. Thornton, St. Joseph, MO (US);
Patrick R. Harris, Lenexa, KS (US);
Herzog Railroad Services, Inc., St. Joseph, MO (US);
Abstract
A system and method for operating a ballast car hopper door includes logic and control circuitry, a hydraulic actuator, a door position sensor, and one or more sensors operable to measure system operational parameters. During normal operation of the hopper door the logic and control circuitry records the system operational parameters. In the event of failure, or absence, of the door position sensor the control circuitry compares real-time data to recorded data to maintain operation and correct positioning of the hopper door.