[특허]Telescopic manhole and storm drain installation

Telescopic manhole and storm drain installation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E02D-029/14
출원번호	US-0611849 (1990-11-13)
발명자 / 주소	Ryan Chester (200 Charles Bancroft Hwy. Litchfield NH 03031) Morina John (155 Becker St. Manchester NH 03102)
인용정보	피인용 횟수 : 42 인용 특허 : 0

초록 ▼

A telescopic manhole or storm drain installation includes a riser assembly provided with an upper section and adjacent lower section the former of which comprises a side wall defining an inverted frustoconical configuration while the latter provides a vertically disposed member having external threads cooperating with a stationary threaded collar. To prepare for resurfacing of a roadway or the like, no excavation about the riser is required prior to its elevation by use of a tool which engages mating receptors located within the interior of the riser. Rotation of the tool rotates the riser assembly within the threads of the collar until the new, elevated plane is achieved. The effort required to displace the riser is minimial due to the movement of its outer surface away from any grouting or roadway base previously abutting the riser. Risers with non-circular upper sections and lids are accommodated by forming the riser of separate upper and lower sections having a sliding joint structure therebetween. Synthetic polymeric materials are proposed for both the risers and lids having a somewhat similar external configuration but employing lids provided with a body of substantial height and formed with a dome-shaped bottom surface such that vertical compressive forces are transmitted radially thereby and conveyed to the surrounding riser side wall.

대표청구항 ▼

A telescopic manhole and storm drain installation including: a riser assembly having an upper section adjacent a lower section and defining an interior passageway therein, said upper section having a side wall terminating in opposite top and bottom portions, said side wall inclined upwardly and outwardly from said bottom portion to said top portion and defining substantially an inverted frustoconical configuration, said lower section including a circular wall extending in a vertical plane and provided with external threads thereon, a lid removably attachable to said side wall top portion and spanning said interior passageway, mating threads on said lid and riser assembly upper section top portion, a stationary ring member having internal threads thereon, said riser assembly lower section external threads engaging with said ring member internal threads, and a plurality of spaced apart tool-engaging receptors on said riser assembly and projecting into said interior passageway, whereby upon removal of said lid from said riser assembly side wall top portion and insertion of a tool into said receptors, rotation of the tool rotates said riser assembly lower section to elevate said riser assembly lower and upper sections, during which elevation said upper section inclined side wall is moved away from any material previously engaging said upper section inclined side wall.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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이 특허를 인용한 특허 (42)

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