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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0040172 (1987-04-17) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 31 인용 특허 : 0 |
A sleeper is disclosed comprising a guideway, a resilient strip, a nailing bed and a spring. The guideway is an elongated channel of C-shaped cross-section with three fully closed faces and a partially open face. A plurality of the guideways are fastened to the floor base and the resilient strips pl
A sleeper of the type used in attaching covering material to a surface, the sleeper comprising: an attachment member adapted for attachment to the covering material; means for biasing the attachment member away from the surface; and means for mounting the attachment member to the surface such that t
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