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:
Apr. 30, 1991
Filed:
Sep. 18, 1989
Applicant:
Inventors:
William H Hodgson, Braithwaite, GB;
Colin G Stanworth, Marchington, GB;
David J Thompson, Derby, GB;
Assignees:
British Steel plc, London, GB;
British Railways Board, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01B / ;
U.S. Cl.
CPC ...
238283 ; 267141 ;
Abstract
A rail which has secured to it a composite body for absorbing vibrational energy whereby to reduce noise generated by vehicular traffic on the rail. The composite body comprises a visco-elastic damping medium 5 bonded to, and sandwiched between, both the rail and a constraining member, e.g. a steel strip 6, substantially stiffer in tension than the damping medium.