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. 12, 1994
Filed:
Apr. 19, 1993
Robert E Evans, LaGrange, GA (US);
Richard L Lich, Newnan, GA (US);
Trackmobile, Inc., LaGrange, GA (US);
Abstract
A railcar moving vehicle having a hydraulic system for raising the vehicle coupler while coupled to a railroad car or the like to transfer weight from the railcar to the vehicle. By this invention, fluid pressure in the hydraulic power line is sensed, to monitor an increase in the fluid pressure as the hydraulic system raises the vehicle coupler while coupled to a railcar. Then, when a substantial termination of the increase in fluid pressure is sensed as the hydraulic coupler is raised, an indicator signals the occurrence of this event, typically by automatically terminating the hydraulic raising of the vehicle coupler. Thus, weight may be transferred without overraising the railcar, without the need for estimating the weight of the railcar prior to the weight transfer process.