IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0501802
(2003-01-20)
|
등록번호 |
US-7469935
(2008-12-30)
|
우선권정보 |
FI-20020107(2002-01-21) |
국제출원번호 |
PCT/FI03/000038
(2003-01-20)
|
§371/§102 date |
20050209
(20050209)
|
국제공개번호 |
WO03/060371
(2003-07-24)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Occhiuti Rohlicek & Tsao LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
13 |
초록
▼
A pipe fitting for connecting at least two pipes, the pipe fitting (1) comprising at least two layers. An innermost layer (2) and an outer layer (3) are of different materials. The innermost layer (2), which gets into contact the liquid to be conveyed, is made of plastic tolerating high temperatures
A pipe fitting for connecting at least two pipes, the pipe fitting (1) comprising at least two layers. An innermost layer (2) and an outer layer (3) are of different materials. The innermost layer (2), which gets into contact the liquid to be conveyed, is made of plastic tolerating high temperatures. The outer layer (3) is formed of such materials that the outer surface is arranged to function as the provider of oxygen diffusion protection and/or the UV protector.
대표청구항
▼
The invention claimed is: 1. A pipe fitting for connecting at least two pipes, which pipe fitting comprises at least an innermost layer and an outer layer in such a way that the innermost layer is made of a material different from the outer layer, and that the innermost layer is made of plastic tol
The invention claimed is: 1. A pipe fitting for connecting at least two pipes, which pipe fitting comprises at least an innermost layer and an outer layer in such a way that the innermost layer is made of a material different from the outer layer, and that the innermost layer is made of plastic tolerating high temperatures, and that the outer layer is formed of such a material that the outer layer is arranged to function as the provider of oxygen diffusion protection and/or the UV protector, wherein the materials of the different layers are selected in such a way that the outer layer is in contact with but not secured to the innermost layer, such that the surfaces of the innermost layer and the outer layer are able to move relative to each other, wherein the innermost layer is made of polyphenyl sulphone, polysulphone, polyvinylidene fluoride, polyketone, or polyether ketone, and wherein the outer layer is made of polyamide, polypropylene, polyethylene, acrylonitrile-butadiene-styrene, or a copolymer containing styrene. 2. A pipe fitting according to claim 1, wherein the outer layer is arranged to function as the provider of chemical resistance. 3. A pipe fitting according to claim 1 wherein the outer layer is arranged to function as mechanical reinforcement. 4. A pipe fitting according to claim 1, wherein the walls of the innermost layer are formed smooth. 5. A pipe fitting according to claim 1, wherein there is an intermediate layer between the innermost layer and the outer layer. 6. A pipe fitting according to claim 5, wherein the intermediate layer is a foamed plastic material layer. 7. A pipe fitting according to claim 1, wherein the outer surface of the pipe fitting is of the same color as the at least two pipes to be connected to the pipe fitting. 8. A pipe fitting according to claim 1, wherein the end of the outer layer is arranged to function as a stop member of the at least one of the at least two pipes to be inserted into the pipe fitting. 9. A pipe fitting according to claim 1, wherein the UV protection of the outer surface of the pipe fitting is intensified with metal or mica pigment. 10. A pipe fitting according to claim 1, wherein a compression collar is arranged to be used to guarantee the connection between the pipe fitting and at least one of the at least two pipes. 11. A pipe fitting according to claim 10, wherein the outer diameter of the pipe fitting is arranged to be equal to the outer diameter of the compression collar. 12. A pipe fitting according to claim 10, wherein the color of the compression collar is substantially the same as the color of the pipe fitting. 13. A pipe fitting according to claim 12, wherein the outer surface of either the compression collar or the pipe fitting is embossed. 14. A pipe fitting according to claim 10, wherein the end of the compression collar on the side of the at least one of the at least two pipes is rounded. 15. A pipe fitting according to claim 10, further comprising a support is intended to be used in connection with the pipe fitting, the support having a support collar whose width is substantially equal to the width of the compression collar and whose outer diameter is substantially equal to the outer diameter of the compression collar. 16. A pipe fitting according to claim 15, wherein the at least two pipes, the support, the pipe fitting and the compression collar are substantially of the same color. 17. A pipe fitting according to claim 1, wherein in connection with the pipe fitting a plastic composite pipe having a plastic innermost layer and a metal layer outside it is intended to be used; the outer surface of the plastic composite pipe is of metal color, the color being provided by using a transparent extruded plastic material upon the metal layer, or in such a way that a surface is extruded upon the metal, which surface is colored using pearlescent, metal-colored or mica pigments. 18. A pipe fitting according to claim 1, wherein the outer layer is formed as a separate and replaceable part.
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