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. 03, 1990
Filed:
Oct. 19, 1988
Applicant:
Inventor:
Lance Harkus, Carlingford, AU;
Assignee:
Pandrol Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01B / ;
U.S. Cl.
CPC ...
238351 ; 238349 ;
Abstract
A bushing of electrically insulating material has a passageway, of elongate cross-section, through it. The bushing is inserted in a clip-retaining member and the latter is supported in a mould into which a wet cement mix is poured so that a concrete railway sleeper is formed and the clip-retaining member is held in the concrete with the passageway above the concrete. A center arm and an upper arm of a substantially e-shaped clip are driven into the passageway and a lower arm of the clip bears downwardly on a flange of a railway rail.