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Class 238/154 - Chair


Subclass of Class 238 - Railways: surface track
Definition: Insulated rail-joints of the chair type include base-seats
No. of patents: 3
Last issue date: 08/28/2007


NumberTitleIssue Date
7261244Tie plate
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 mat...
08/28/2007
4615484Insulative protective device for rail fastener
A rail-support insulating device for electrically insulating a rapid transit rail and rail fastener from the rail support structure is described. The device includes an electrically non-conductive member that surrounds and extends outwardly from the rail ...
10/07/1986
4061270Steel tie insulating saddle
A unitized insulating element for use with a steel cross tie is provided. The insulating element is operative to electrically insulate the rail from the steel tie, from retaining elements associated with the tie which prevent lateral movement of the rail ...
12/06/1977
 
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