• 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Utility cover system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E02D-029/14   
미국특허분류(USC) 404/025; 137/371
출원번호 US-0460080 (2003-06-11)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Luedeka, Neely &
인용정보 피인용 횟수 : 8  인용 특허 : 17

A utility cover system for preventing water and silt leakage into a utility entrance within a road surface. The utility cover system includes an outer frame having an opening defined by an inner tapered edge, and a wedge cover having an outer tapered edge that fits within the opening of the outer frame. The outer frame preferably has an inner segment and an outer segment, wherein the outer segment is thinner than the inner segment.


I claim: 1. A utility cover system, comprising: an outer frame having an opening defined by an inner tapered edge, wherein said inner tapered edge tapers inwardly and upwardly and wherein said inner tapered edge faces downwardly; and a wedge cover formed from a resilient material and having an outer tapered edge and a bottom surface that is positionable over a utility cover, wherein said outer tapered edge tapers inwardly and upwardly, wherein said outer tapered edge is engageable with said inner tapered edge of said outer frame and wherein said flexibl...

이 특허에 인용된 특허 (17)

  1. Suatac Ismail Cemil,CAX ITX K2H 9A9. Adjustable manhole cover frame. USP2001016179518.
  2. Sinclair David Brent,CAX. Adjustment riser. USP2001036196760.
  3. Jonasz Slawomir,CAX. Composite compression molded article, composition therefor and process for manufacture thereof, and use. USP1998035723192.
  4. Anderson Dennis C. (Northfield MN). Height adjustment ring for manhole cover frame. USP1996105564855.
  5. Odill Frank J. (West Allis WI) Anderson David E. (Elk River MN). Manhole chimney seal. USP1984094469467.
  6. Bowman Harold M. (18867 N. Valley Dr. Fairview Park OH 44126). Manhole construction. USP1980054203686.
  7. Lewis Michael E. (1555 Copper Hill Pkwy. Santa Rosa CA 95403) Lewis Richard C. (1555 Copper Hill Pkwy. Santa Rosa CA 95403) Schapel Rodney E. (P.O. Box 60039 Reno NV 89506). Manhole cover. USP1995015378078.
  8. Helms William R. (P.O. Drawer 918 Goldsboro NC 27530). Manhole cover and frame work. USP1979034145151.
  9. Yin Chun-Chou (20 ; Fu Hsin Hsin Tsun ; Kuo Kuang Li Hwa Lian City ; Hwa Lian County TWX). Manhole having a splayed rib ring formed at underside of the lid thereof. USP1993085240346.
  10. Gagas Stanley (127 Alpine Ter. Shawano WI 54166). Manhole infiltration disk and seal assembly. USP1983014368893.
  11. Ditcher, Jack; Ditcher, Eric A.. Manhole riser and cooperating sleeve to provide a waterlock for manhole structures. USP1985094540310.
  12. House Jeffrey W. ; House William P. ; House William K.. Method of sealing a manhole riser and a catch basin and apparatus for same. USP1999035876533.
  13. Sinclair David Brent (Baie d\Urfe CAX). Speed bump. USP199712D387181.
  14. Tompkins Kenneth (14 Garnett Dr. Ajay CAX L1S 4Z6) Herter Artur (1445 Ondian Rd. Mississauga CAX L5H 1S5). Transition collar and spacing device for use in road construction. USP1996075536110.
  15. Turner Frank J. (P.O. Box 20741 Raleigh NC 27619). Valve box adapter. USP1995035394898.
  16. Westhoff James A. (Langhorne PA) Kelly James A. (Warrington PA). Water lock method and apparatus. USP1994045299884.
  17. Devlin Mike (Anaheim CA). Watertight pit cover. USP1995045404676.