IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0647037
(2000-10-26)
|
우선권정보 |
NO-0001344 (1998-03-25) |
국제출원번호 |
PCT/NO99/00096
(1999-03-23)
|
§371/§102 date |
20001026
(20001026)
|
국제공개번호 |
WO99/49257
(1999-09-30)
|
발명자
/ 주소 |
- Arthur Dybevik NO
- Ole S. Kvernstuen NO
- Terje Moen NO
|
출원인 / 주소 |
|
대리인 / 주소 |
Andrus, Sceales, Starke & Sawall, LLP
|
인용정보 |
피인용 횟수 :
38 인용 특허 :
3 |
초록
▼
A coupling for interconnecting two double-walled pipes, e.g. production filter pipes (10, 12). The coupling may have the shape of a connector (10A, 12A) divided into two parts, each part (10A, 12A) being attachable on the end portion of a double pipe (10, 12), the parts (10A, 12A) of the connector b
A coupling for interconnecting two double-walled pipes, e.g. production filter pipes (10, 12). The coupling may have the shape of a connector (10A, 12A) divided into two parts, each part (10A, 12A) being attachable on the end portion of a double pipe (10, 12), the parts (10A, 12A) of the connector being interconnectable, preferably mutually screwable. Such double pipes (10, 12) have two concentric liquid passages, one through the inner pipe (14) and one through the annulus-like, concentric liquid passage 920) between inner pipe (14) and outer pipe (16). In order not to block the outer concentric liquid passage (20) at the joint place (10A, 12A) so that liquid flowing therewithin must be transferred to said smaller pipe through a valve, longitudinally extending, through-going flowing channels (18) have been formed in the joint area; said channels (18) may be distributed circumferentially, thus allowing continuous flow of liquid past the coupling area (10A, 12A).
대표청구항
▼
1. A pipe coupling for interconnecting double-walled pipes (10, 12) having radially spaced inner (14) and outer (16) pipe walls forming longitudinally extending, annular liquid passages (20) in the pipes, said pipe coupling comprising:first and second sleeve-shaped connector parts (10A, 12A), each o
1. A pipe coupling for interconnecting double-walled pipes (10, 12) having radially spaced inner (14) and outer (16) pipe walls forming longitudinally extending, annular liquid passages (20) in the pipes, said pipe coupling comprising:first and second sleeve-shaped connector parts (10A, 12A), each of said connector parts having ends spaced along an axis of the part, each of said connector parts having one end (10C, 12C) adapted for threaded attachment to an end portion of the inner wall (14) of a double-walled pipe (10, 12), the other ends of each of said connector parts being adapted for interconnection of said parts; each of said connector parts having peripherally positioned, axially extending, through going channels (18) alignable with the liquid passages (20) of the pipes when said connector parts are attached to the pipes for allowing liquid flow through the pipe coupling and between the liquid passages of the pipes; said first connector part (10A) having an externally threaded pipe pin part (10A') at said other end adapted to be screwed into an internally threaded socket part (12C') at said other end of the second part, said one ends of said first and second parts being provided with internal threads on an attachment portion thereof having substantially the same effective diameter as a threaded, radially outermost wall face of the inner pipe so that the inner walls of the double-walled pipes form support for the coupled pipe structure, said pipe coupling having an outer diameter that is insignificantly larger than the outer diameter of the double walled pipe.
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