Railways: surface track – Roadbed
Patent
1979-01-23
1981-10-27
Bertsch, Richard A.
Railways: surface track
Roadbed
210170, 405 36, E01B 200, E02D 2748
Patent
active
042968844
ABSTRACT:
A containment reservoir for a liquid, such as petroleum oil, comprising, a walled ground containment space or pit, opening upwardly, with the space containing a liquid impervious flexible liner generally following the contour of the space, and with the liner comprising a layer of pervious fabric material having on at least one of its sides a layer of liquid impervious material, such as rubber, the liner being operable to prevent escape of liquid through the liner from the containment space; means are provided coacting with the liner covered containment space for removing liquid from the reservoir. A covering layer of pervious fabric material filters anything, including liquid, passing into the reservoir. A method of forming the reservoir from predetermined width strips of liner stock, and a method of retaining and salvaging oil spilled along a railroad track environment is also disclosed.
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Bertsch Richard A.
True Temper Corporation
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