IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0315759
(2002-12-10)
|
발명자
/ 주소 |
- Frew, James E. B.
- Riggs, Robert Adam
- Waterland, III, Alfred F.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
10 |
초록
▼
The manway cover has a groove into which a gasket is adapted to be mounted. The groove has an inside diameter. The gasket has an annular metal insert having a top surface and bottom surface, and an inside edge and an outside edge and corresponding inside and outside diameters. A polymer strip is wra
The manway cover has a groove into which a gasket is adapted to be mounted. The groove has an inside diameter. The gasket has an annular metal insert having a top surface and bottom surface, and an inside edge and an outside edge and corresponding inside and outside diameters. A polymer strip is wrapped around and substantially covers the top and bottom surfaces of the metal insert. The polymer strip further has an overlap portion where the polymer strip is folded over and attached to itself, this overlap defining an inside diameter and/or outside diameter of the gasket. The inside diameter of the metal insert is no less than substantially the same as the inside diameter of the manway cover groove. The inside diameter of the gasket is less than the inside diameter of the metal insert.
대표청구항
▼
1. A manway cover gasket wherein the manway cover comprises a groove into which the gasket is adapted to be mounted, the groove comprising an inside diameter, the gasket comprising:an annular rigid insert having a top surface and bottom surface, and an inside edge and an outside edge and correspondi
1. A manway cover gasket wherein the manway cover comprises a groove into which the gasket is adapted to be mounted, the groove comprising an inside diameter, the gasket comprising:an annular rigid insert having a top surface and bottom surface, and an inside edge and an outside edge and corresponding inside and outside diameters;a polymer strip wrapped around and substantially covering the top and bottom surfaces of the rigid insert;wherein the polymer strip comprises an overlap portion the inside diameter of the rigid insert wherein the polymer strip defines an inside diameter of the gasket;further wherein the inside diameter of the rigid insert is no less than substantially the same as the inside diameter of the manway cover groove, and the inside diameter of the gasket is less than the inside diameter of the manway cover groove. 2. A gasket as described in claim 1, wherein the rigid insert is comprised of stainless steel. 3. A gasket as described in claim 1, wherein the rigid insert is corrugated. 4. A gasket as described in claim 1, wherein the rigid insert comprises tabs that extend radially outwardly from the outside diameter of the rigid insert. 5. A gasket as described in claim 1, wherein the polymer strip is comprised of expanded PTFE. 6. A gasket as described in claim 1, wherein the manway cover groove defines an opening width between the groove inside diameter and a groove outside diameter, and the opening width of the groove is less than the width of the groove inside the opening;and the width of the gasket is greater than the opening width of the groove. 7. A gasket as described in claim 6, wherein the rigid insert comprises tabs that extend radially outwardly from the outside diameter of the rigid insert. 8. A gasket as described in claim 1, wherein the rigid insert comprises tabs that extend radially inwardly from the inside diameter of the rigid insert. 9. A gasket as described in claim 1, wherein the polymer strip is folded over from the inside outwardly. 10. A gasket as described in claim 1, wherein the polymer strip is folded over from the outside inwardly. 11. A manway cover gasket wherein the manway cover comprises a groove into which the gasket is adapted to be mounted, the groove comprising an inside diameter, the gasket comprising:an annular rigid insert having a top surface and a bottom surface, and an inside edge and an outside edge and corresponding inside and outside diameters;two annular strips of polymer having an inside and an outside diameter, one strip adhered on each side of the rigid insert and substantially covering the top and bottom surfaces of the rigid insert;wherein the inside diameters of the polymer strips are less than the inside diameter of the rigid insert, and an overlap portion is formed from the portion of the polymer strips inside the inside diameter of the rigid insert;further wherein the inside diameter of the rigid insert is no less than substantially the same as the inside diameter of the manway cover groove, and the inside diameter of the gasket is less than the inside diameter of the manway cover groove. 12. A gasket as described in claim 11, wherein the rigid insert is comprised of stainless steel. 13. A gasket as described in claim 11, wherein the rigid insert is corrugated. 14. A gasket as described in claim 11, wherein the rigid insert comprises tabs that extend radially outwardly from the outside diameter of the rigid insert. 15. A gasket as described in claim 11, wherein the polymer strips are comprised of expanded PTFE. 16. A gasket as described in claim 11, wherein the manway cover groove defines an opening width between the groove inside diameter and a groove outside diameter, and the opening width of the groove is less than the width of the groove inside the opening;and the width of the gasket is greater than the opening width of the groove. 17. A gasket as described in claim 16, wherein the rigid insert comprises tabs that extend radially outwardly from the o utside diameter of the rigid insert. 18. A gasket as described in claim 11, wherein the rigid insert comprises tabs that extend radially inwardly from the inside diamter of the rigid insert. 19. A manway cover gasket wherein the manway cover comprises a groove into which the gasket is adapted to be mounted, the groove comprising an outside diameter, the gasket comprising:an annular rigid insert having a top surface and bottom surface, and an inside edge and an outside edge and corresponding inside and outside diameters;a polymer strip wrapped around and substantially covering the top and bottom surfaces of the rigid insert;wherein the polymer strip comprises an overlap portion outside the outside diameter of the rigid insert wherein the polymer strip defines an outside diameter of the gasket;further wherein the outside diameter of the rigid insert is no more than substantially the same as the outside diameter of the manway cover groove, and the outside diameter of the gasket is greater than the outside diameter of the manway cover groove.
이 특허에 인용된 특허 (10)
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Walton W. McCarthy, Disaster shelter.
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Walton W. McCarthy, Entranceway and disaster shelter utilizing the same.
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Burian William F. (Downers Grove IL) Walker Brian (Naperville IL), Hatch cover having a removable gasket.
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Anderson John D. ; Peach ; Jr. Walter J., Hatch cover sealing device.
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Bojarczuk Raphael M. ; Paulson Roger Dean, Hybrid gasket.
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Amorese Franklyn J. (Hilton NY) Bellavia Anthony S. (Spencerport NY), O-ring envelope gasket.
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Nicholson Terence P. (Hexham GB3), Seal.
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Nicholson Terence P. (Hexham GB3), Static seal.
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Burian William F. ; Degutis Alex V. ; Ryan Michael S. ; Brzezniak Stanley A., Tank car manway cover assembly.
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Burian William F. (Downers Grove IL) Stevenson Daniel T. (Baytown TX), Tank car manway gasket.
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Drager, Barry, Railcar man-way cover lift-assist system.
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Douglas, Peter J.; Walter, Gary C., Railroad tank car manway assembly.
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Ragsdale, Tyler Hamilton; Riggs, Robert Adam; Waterland, III, Alfred F., Seamless corrugated insert gasket and method of forming the same.
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Ragsdale,Tyler Hamilton; Riggs,Robert Adam; Waterland, III,Alfred F., Seamless corrugated insert gasket and method of forming the same.
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