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특허 상세정보

Railroad tie of non-homogeneous cross section useful in environments deleterious to timber

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E01B-003/10    B32B-021/00   
미국특허분류(USC) 238/084; 238/083
출원번호 US-0081271 (2011-04-06)
등록번호 US-8430334 (2013-04-30)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Cook Alex Ltd.
인용정보 피인용 횟수 : 0  인용 특허 : 54
초록

The disclosure provides a railroad tie including a core, a first sleeve encapsulating the core and a second sleeve encapsulating the first sleeve. The first sleeve includes fingers running parallel to a long axis of the core along a top surface and fingers running perpendicular to a long axis of the tie along elongated sides of the first sleeve.

대표
청구항

1. A railroad tie comprising: a core comprising wood, wood-product, engineered wood product, or engineered plastic product;a first sleeve encapsulating the core, wherein the first sleeve comprises at least one of the group consisting of plastic, plastic-composite, or non-plastic polymers;a second sleeve encapsulating the first sleeve, wherein the second sleeve comprises at least one of the group consisting of plastic, plastic-composite, or non-plastic polymers;the core having a longitudinal axis running parallel to its longest dimension;wherein the first...

이 특허에 인용된 특허 (54)

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