IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0143085
(2009-12-29)
|
등록번호 |
US-8540454
(2013-09-24)
|
우선권정보 |
KR-10-2008-0137930 (2008-12-31); KR-10-2009-0005013 (2009-01-21) |
국제출원번호 |
PCT/KR2009/007854
(2009-12-29)
|
§371/§102 date |
20110630
(20110630)
|
국제공개번호 |
WO2010/077049
(2010-07-08)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Mitchell, Christopher Paul
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
6 |
초록
▼
A manhole cover which has an upper body and a lower body coupled to each other to maintain balance, to endure loads applied from an external source in a stable manner, to protect the inside of the manhole from the ingress of rainwater, and to enable the upper body to be stably fixed inside the lower
A manhole cover which has an upper body and a lower body coupled to each other to maintain balance, to endure loads applied from an external source in a stable manner, to protect the inside of the manhole from the ingress of rainwater, and to enable the upper body to be stably fixed inside the lower body.
대표청구항
▼
1. A manhole cover, comprising a lower body, the inside of which is hollow, with a spiral rib formed along the inner surface of the hollow space, and convex-concave portions formed on the upper surface of the spiral rib;an upper body which is coupled with the lower body inside the latter, and the in
1. A manhole cover, comprising a lower body, the inside of which is hollow, with a spiral rib formed along the inner surface of the hollow space, and convex-concave portions formed on the upper surface of the spiral rib;an upper body which is coupled with the lower body inside the latter, and the inside of which is hollow, with a spiral rib and convex-concave portions formed along outer surface of the upper body to correspond to the spiral rib and convex-concave portions of the lower body, and a stepped portion formed at the upper surface of the upper body;a lid mounted on the stepped portion of the upper body to prevent the ingress of foreign matter into the inside of the upper body; anda waterproofing means removably arranged inside the upper body to prevent the ingress of rainwater into the inside of the manhole, wherein the waterproofing means comprises: a waterproofing plate which is seated on a catching projection formed on the inner surface of the upper body to prevent ingress of rainwater;a first packing member attached to edge of said waterproofing plate so as to wrap the edge, upper portion of the member being extended to upper end of the waterproofing plate and lower portion being in close contact with the catching projection so as to wrap the edge of the waterproofing plate; anda pressing ring arranged over said waterproofing plate and pressing the first packing member extended to the upper end of the waterproofing plate into close contact with the inner surface of the upper body, thereby achieving a tight waterproof. 2. The manhole cover according to claim 1, wherein said pressing ring is constructed in a turnbuckle type such that the diameter of the ring may be varied. 3. The manhole cover according to claim 1, wherein for said spiral ribs of the upper and lower bodies, two or more spiral ribs with the same pitch are formed at a constant interval such that coupling strength of the upper and lower bodies may be enhanced. 4. The manhole cover according to claim 1, wherein thread holes for fitting bolts are formed in the lower body, and the bolts are fastened through said thread holes to secure the upper body, thereby preventing lateral shaking of the upper body. 5. The manhole cover according to claim 1, further comprising a first groove which is formed along edge of lower surface of said lid;a second groove which is formed on upper part of said stepped portion to correspond to said first groove and becomes narrower from bottom to top in its cross section; anda second packing member which is fitted and secured in said second groove and upper end portion of which is fitted in said first groove when the lid is mounted, thereby preventing foreign matter and rainwater from ingressing into the inside of the upper body. 6. A manhole cover, comprising a lower body, the inside of which is hollow, with a spiral rib formed along the inner surface of the hollow space, and a plurality of thread holes formed extending into the inside of the lower body;an upper body which is coupled with the lower body inside the latter, and the inside of which is hollow, with a spiral rib formed along outer surface of the upper body to correspond to the spiral rib of the lower body, and a plurality of guide projections formed between the spiral ribs in a height direction of the upper body, and a stepped portion formed at the upper surface of the upper body;bolts fitted through the thread holes of the lower body to press the upper body between the guide projections thereof, thereby supporting the upper body and at the same time preventing rotation of the upper body;a lid mounted on the stepped portion of the upper body to prevent the ingress of foreign matter into the inside of the upper body; anda waterproofing means removably arranged inside the upper body to prevent the ingress of rainwater into the inside of the manhole, wherein the waterproofing means comprises a waterproofing plate which is seated on a catching projection formed on the inner surface of the upper body to prevent ingress of rainwater;a first packing member attached to edge of said waterproofing plate so as to wrap the edge, upper portion of the member being extended to upper end of the waterproofing plate and lower portion being in close contact with the catching projection so as to wrap the edge of the waterproofing plate; anda pressing ring arranged over said waterproofing plate and pressing the first packing member extended to the upper end of the waterproofing plate into close contact with the inner surface of the upper body, thereby achieving a tight waterproof. 7. The manhole cover according to claim 6, wherein said thread holes are formed inclined downwardly toward the upper body, and said bolts are coupled through the inclined thread holes to push the upper surface of the spiral rib of the upper body in a downwardly inclined direction such that the upper body may be more stably supported. 8. The manhole cover according to claim 4, wherein said thread holes are formed inclined downwardly toward the upper body, and said bolts are coupled through the inclined thread holes to push the upper surface of the spiral rib of the upper body in a downwardly inclined direction such that the upper body may be more stably supported. 9. The manhole cover according to claim 6, wherein said pressing ring is constructed in a turnbuckle type such that the diameter of the ring may be varied. 10. The manhole cover according to claim 6, wherein for said spiral ribs of the upper and lower bodies, two or more spiral ribs with the same pitch are formed at a constant interval such that coupling strength of the upper and lower bodies may be enhanced. 11. The manhole cover according to claim 6, further comprising a first groove which is formed along edge of lower surface of said lid;a second groove which is formed on upper part of said stepped portion to correspond to said first groove and becomes narrower from bottom to top in its cross section; anda second packing member which is fitted and secured in said second groove and upper end portion of which is fitted in said first groove when the lid is mounted, thereby preventing foreign matter and rainwater from ingressing into the inside of the upper body. 12. A manhole cover, comprising a lower body, the inside of which is hollow, with a spiral rib formed along the inner surface of the hollow space, and a plurality of catching grooves formed in a direction perpendicular to said spiral rib and at a constant interval;an upper body with a spiral rib formed along outer surface of the upper body to correspond to the spiral rib of the lower body such that the upper body can be coupled with the lower body inside the latter, and a plurality of catching grooves formed in a direction perpendicular to said spiral rib of the upper body and at a constant interval, and a stepped portion formed at the upper portion of the upper body;a plurality of catching rods which are installed between the upper body and lower body through the stepped portion and fitted in the catching grooves formed in the spiral ribs of the upper and lower bodies, thereby preventing the upper body from rotating inside the lower body;a lid mounted on the stepped portion of the upper body to prevent foreign matter from ingressing into the inside of the upper body; anda waterproofing means removably arranged inside the upper body to prevent the ingress of rainwater into the inside of the manhole, wherein the waterproofing means comprises a waterproofing plate which is seated on a catching projection formed on the inner surface of the upper body to prevent ingress of rainwater:a first packing member attached to edge of said waterproofing plate so as to wrap the edge, upper portion of the member being extended to upper end of the waterproofing plate and lower portion being in close contact with the catching projection so as to wrap the edge of the waterproofing plate; anda pressing ring arranged over said waterproofing plate and pressing the first packing member extended to the upper end of the waterproofing plate into close contact with the inner surface of the upper body, thereby achieving a tight waterproof. 13. The manhole cover according to claim 12, wherein said catching rods comprise a vertical rod part inserted through the stepped portion to be fitted in the catching grooves of said upper and lower bodies; and a horizontal rod part formed so as to be horizontally bent at an end portion of said vertical rod part and seated on the stepped portion. 14. The manhole cover according to claim 13, wherein formed in said stepped portion are rod-inserting holes for inserting said vertical rod part, and rod-seating grooves which are connected to said rod-inserting holes and in which said horizontal rod part is inserted. 15. The manhole cover according to claim 12, wherein said pressing ring is constructed in a turnbuckle type such that the diameter of the ring may be varied. 16. The manhole cover according to claim 12, wherein for said spiral ribs of the upper and lower bodies, two or more spiral ribs with the same pitch are formed at a constant interval such that coupling strength of the upper and lower bodies may be enhanced. 17. The manhole cover according to claim 12, further comprising a first groove which is formed along edge of lower surface of said lid;a second groove which is formed on upper part of said stepped portion to correspond to said first groove and becomes narrower from bottom to top in its cross section; anda second packing member which is fitted and secured in said second groove and upper end portion of which is fitted in said first groove when the lid is mounted, thereby preventing foreign matter and rainwater from ingressing into the inside of the upper body.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.