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:
May. 22, 1979
Filed:
Dec. 19, 1977
Osvaldo F Chierici, Elmhurst, IL (US);
Richard F Murphy, Aurora, IL (US);
Holland Company, Lombard, IL (US);
Abstract
A tie plate for mounting railroad track rails on track ties in which the tie plate is formed from a corrosion resistant resilient polymer of dry self-lubricating characteristics, in which the tie plate has its upper side shaped to define along either side of the plate bearing surface to be engaged by the rail base a pair of flexible ridges each defining a flexible lip, with such lips opposing each other and terminating in a marginal edge projecting over the tie plate bearing surface. The tie plate ridges each define under their respective lips an upstanding side wall, which side walls oppose each other and are spaced apart and of a height to closely receive the rail base side edges therebetween when the rail is applied to the tie plate. The tie plate ridge lips each define on their upwardly facing sides a cam surface arcing downwardly from the crest of same to the respective lip marginal edges, with the respective lip marginal edges being spaced apart for snap fitting of the rail base between same for effecting seating of the rail base against the tie plate bearing surface. The underside of the tie plate is serrated for biting engagement with the tie as well as providing for aereation of same under the plate. In alternate forms, a separate brace plate extends across the tie plate for engagement with the sides of the tie to eliminate the need for rail anchors.