Railways: surface track – Rail joints – Insulated
Reexamination Certificate
2011-07-12
2011-07-12
Le, Mark T (Department: 3617)
Railways: surface track
Rail joints
Insulated
C238S153000, C238S240000, C238S241000, C238S242000
Reexamination Certificate
active
07975933
ABSTRACT:
A rail joint arrangement comprises two rails. The rails have adjacent rail ends separated and thereby forming a gap. The rails have a top end containing a rail head and a bottom end. The gap is defined between the top end and the bottom end of the rails, and the width of the gap is non-uniform throughout its entire length. In addition, the rail joint arrangement comprises at least one electric insulator positioned within the gap. The rail joint arrangement is fastened together by a rail joint bar attaching the two rails together.
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Davis et al., “Prototype Next Generation Insulated Joints”, Technology Digest, Mar. 2010, TD-10-009, Transportation Technology Center, Inc.
Akhtar et al., “Development of and Improved Performance Bonded Insulated Joint for HAL Service”, Technology Digest, May 2006, TD-06-012, Transportation Technology Center, Inc.
Davis et al., “Analysis of Conventional and Tapered Bonded Insulated Rail Joints”, Technology Digest, May 2006, TD-06-014, Transportation Technology Center, Inc.
Akhtar et al., “Preliminary Results of Prototype Insulated Joint Tests at FAST”, Technology Digest, May 2007, TD-07-013, Transportation Technology Center, Inc.
Davis et al., “Evaluation of Improved Designs for Bonded Insulated Joints in HAL Service”, Technology Digest, Jul. 2007, TD-07-020, Transportation Technology Center, Inc.
Boario Patrick J.
Downey John M.
Mospan John W.
Urmson, Jr. W. Thomas
Le Mark T
The Webb Law Firm
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