Railways: surface track – Tie-plates
Reexamination Certificate
2007-08-28
2007-08-28
Le, Mark T. (Department: 3617)
Railways: surface track
Tie-plates
C238S152000, C238S154000, C238S283000, C238S382000, C238S264000, C238S310000, C238S336000, C238S338000, C238S351000, C238S292000
Reexamination Certificate
active
11269160
ABSTRACT:
An electrically-insulated tie plate for electrically isolating parts of a railroad rail system from each other. The electrically-insulated tie plate includes a base plate having a recessed area for receiving a railroad rail and a layer of electrically-insulating material covering portions of the base plate.
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Web site pp. 1 and 2 for an epoxy fiberglass insulated rail joint manufactured by Portec Rail Products, Inc., available at www.Portecrail.com, © 2001.
Web site pp. 1 and 2 for a Poly-Insulated® gauge plate insulator manufactured by Portec Rail Products, Inc., available at www.Portecrail.com, © 2001.
Downey John M.
Mospan John W.
Urmson, Jr. William T.
Le Mark T.
Portec Rail Products Inc.
The Webb Law Firm
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