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:
Mar. 17, 1992
Filed:
Dec. 17, 1990
Franklin S McKeown, Jr, St. Louis, MO (US);
Amsted Industries Incorporated, Chicago, IL (US);
Abstract
The present invention provides a friction shoe for use in a railway freight car truck. The friction shoe is disposed to dampen movements between the truck bolster and the side frames, and consists of a unitarily cast metal body having a generally planar vertical wear plate adapted to frictionally engage a column on the truck side frame. The back surface of the vertical wear plate is augmented to create a thicker cross sectional area at either the upper or lower ends of the plate, depending on the type of shoe being used. The augmented shoe provides a longer wearing friction surface which requires less frequent replacement and lower costs.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile