Method for restoring used railroad ties and the restored railroa

Details Method for restoring used railroad ties and the restored railroa Method for restoring used railroad ties and the restored railroa

1997-06-09

1999-09-14

Thomas, Alexander

Stock material or miscellaneous articles

Patched hole or depression

238370, 264 36, B32B 300

Patent

active

059520728

ABSTRACT:
This invention provides a method for restoring at least one means defining a railroad spike hole located in a used railroad tie. In this way, the restored railroad tie can be reused in subsequent rail replacement operations. The restored railroad tie is capable of having a railroad spike penetrate and be retained within the confines of the restored railroad spike hole without substantial bending problems. The used railroad tie provided has at least one spike hole located therein. In each the means defining a railroad spike hole is formed a polymeric plug. The polymeric plug comprises a substantially non-foaming, non-cellular polymeric material. The polymeric material preferably comprises a polyurethane. The polymeric plug infiltrates and tightly bonds with the railroad spike hole to prevent moisture infiltration. Thus, substantial tie rot due to moisture is impeded, and the leaky railroad spike hole is effectively and efficiently dammed to enable complete filling thereof. The polymeric plug is capable of penetration by and retention of the railroad spike therewithin.

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