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. 17, 2001
Filed:
Dec. 16, 1998
John J. Bernd, Wauwatosa, WI (US);
Richard C. Bohme, Racine, WI (US);
AAA Sales & Engineering, Inc., Oak Creek, WI (US);
Abstract
A testing device is provided for checking the resistive force of a retarder installed on the rail of a railway track for reducing the speed of a railcar rolling along the track. The retarder is a hydraulic unit including a housing, a cylinder slidably mounted in the housing, a piston rod fixed to the housing, a piston assembly fixed to the piston rod and dividing the cylinder into upper and lower chambers, and a valve arrangement responsive to the flow of hydraulic fluid flowing between the upper and lower chambers. The testing device is constructed and arranged to allow a user to check the resistive force of a retarder installed upon the railway track while standing in an upright position.