APPARATUS AND METHOD FOR REPAIRING WORN RAIL SHOULDERS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Apr 9, 2009
app pub date -
Oct 3, 2007
filing date -
Oct 3, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a railroad system a track is formed of ties positioned at predetermined intervals along the right of way, and supporting a pair of rails. Shoulders are disposed in pairs adjacent to the sides of each rail and are partially imbedded in the ties to limit the lateral movement of the rails and define the track gauge. Between each pair of shoulders there is provided a pad disposed under the respective rail. Insulators are provided between the sides of the pad and a respective shoulder. Over time, friction between the insulators and the shoulders may cause excessive wear. This wear is compensated by one or more shims attached to the shoulders by a strong adhesive.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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PANDROL LTD | 63 STATION ROAD ADDLESTONE SURREY KT15 2AR |
International Classification(s)

- 2007 Application Filing Year
- E01B Class
- 63 Applications Filed
- 42 Patents Issued To-Date
- 66.67 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Coats, Frank Howard | Thorofare, US | 11 | 44 |
# of filed Patents : 11 Total Citations : 44 |
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Patent Citation Ranking
- 1 Citation Count
- E01B Class
- 2.90 % this patent is cited more than
- 16 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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