Rail anchor isolator for railroad tie

Details Rail anchor isolator for railroad tie Rail anchor isolator for railroad tie

2008-07-28

2010-06-29

Morano, S. Joseph (Department: 3617)

Railways: surface track

Fastenings

C238S321000, C238S349000, C238S351000

Reexamination Certificate

active

07744010

ABSTRACT:
The present invention provides an isolator particularly adapted for use with a rail anchor utilized in an application where railroad rail is installed on concrete ties. The isolator protects the concrete tie from contact with the rail anchor caused by longitudinal movement of the rail due to train acceleration of deceleration or expansion and contraction due to temperature changes. In one embodiment, the isolator is comprised of a structural plastic material and includes a front face section and a rear face section. The front face section and rear face section each comprise a generally rectangular structure, having a top edge, bottom edge, and side edges. Top and bottom sections join the front face section and rear face section and form part of the isolator. The rail anchor also comprises a support section that extends from an intersection of the rear face section with the bottom section. The rail isolator is designed to be embedded in a concrete railroad tie.

REFERENCES:
patent: 1329363 (1920-02-01), Bowe
patent: 2039181 (1936-04-01), Muller
patent: 3826424 (1974-07-01), McClung et al.
patent: 4561589 (1985-12-01), Hixson
patent: 4632308 (1986-12-01), Fischer
patent: 6619558 (2003-09-01), Jang
patent: 6829871 (2004-12-01), McSherry et al.
patent: 7147169 (2006-12-01), Walsh
patent: 7374110 (2008-05-01), Walsh
patent: 2006/0196963 (2006-09-01), Walsh
patent: 2007/0057081 (2007-03-01), Walsh
patent: 2008/0251595 (2008-10-01), Reed et al.

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