IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0175657
(2002-06-21)
|
우선권정보 |
FR-0008745 (2001-07-02) |
발명자
/ 주소 |
- Favre, Patrick
- Favre, Alain
|
출원인 / 주소 |
|
대리인 / 주소 |
Heslin Rothenberg Farley & Mesiti P.C.
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
9 |
초록
▼
A reusable coupling adaptable to the ends of a tube, the coupling including a nipple (2) having a toothed end (7) designed to be inserted into the tube (1), its inside diameter corresponding approximately to the inside diameter of the tube, the nipple having an annular surface external to the tube.
A reusable coupling adaptable to the ends of a tube, the coupling including a nipple (2) having a toothed end (7) designed to be inserted into the tube (1), its inside diameter corresponding approximately to the inside diameter of the tube, the nipple having an annular surface external to the tube. A peripheral ferrule (4) is mounted around the tube (1) and imprisons the tube in engagement with the toothed part (7) of the nipple (2). The ferrule (4) includes an inward annulus (5) which fits into a peripheral groove (6) on the surface of the nipple, while a seal (8) is provided within the groove to be contacted by the annulus (5). The ferrule (4) is radially compressible and is immobilized and fixed to the periphery of the tube (1) by a connection assembly made up of two connectable parts (9, 10) mounted around the end of the tube on either side of the ferrule, and which compresses the ferrule after it has been fitted on the tube.
대표청구항
▼
1. Reusable coupling adaptable to the ends of a tube, comprising: a nipple (2) comprising a toothed end (7) designed to be inserted into the tube, an inside diameter of said nipple corresponding approximately to the inside diameter of the tube, said nipple further comprising an annular surface (3
1. Reusable coupling adaptable to the ends of a tube, comprising: a nipple (2) comprising a toothed end (7) designed to be inserted into the tube, an inside diameter of said nipple corresponding approximately to the inside diameter of the tube, said nipple further comprising an annular surface (3) external to the tube and a peripheral groove (6) at a second end of said nipple; a peripheral ferrule (4) mounted around the tube (1) and imprisoning the tube in engagement with the toothed part (7) of the nipple (2), said ferrule (4) comprising an inward annulus (5) capable of fitting into the peripheral groove (6) on the surface of the nipple, while a seal (8) is provided at the location of said annulus, wherein the peripheral ferrule (4) is radially compressible and is immobilized and fixed to the periphery of the tube (1) by a connection assembly comprising two connectable parts (9, 10) mounted around the end of the tube (1) on either side of said ferrule (4), and said assembly comprising: a first part defining an outer sleeve (9) positioned around the nipple and comprising on its rear face an annulus for bearing against one of the ends of the ferrule (4) and, on its front face, an internal cage forming a nut (13); a second part defining a clamping ring (10) positioned around the pipe (1), downstream with respect to the ferrule (4), said second part comprising an external threaded portion (14) that can be screwed into a threaded portion of the first part (9) and an internal chamber (18) for bearing against the peripheral surface (17) of the ferrule (4), thereby crushing it and imprisoning the tube (1), as well as pushing the inward annulus (5) of said ferrule (4) into the peripheral groove (6) on the surface of the nipple (2), and imprisoning the seal (8) between said annulus and the bottom of the groove. 2. Coupling according to claim 1, characterized in that the compressible ferrule (4) is made of plastic and comprises teeth (15) on its internal face and along part of its length, its external surface having two oppositely tapering regions (16, 17), the region (17) facing the internal surface of the clamping ring (10) bearing against a region of corresponding taper provided in the chamber of the said ring. 3. Coupling according to claim 1, characterized in that the ferrule (4) comprises staggered slits (19, 20) occupying at least part of the length of each tapering region (16, 17) of the compressible ferrule (4). 4. Coupling according to claim 1, wherein the nipple (2) and the outer sleeve (9) of the connection assembly are made of stainless steel, while the clamping ring (10) and the peripheral ferrule (4) are made of an engineering plastic. 5. Coupling according to claim 2, wherein the nipple (2) and the outer sleeve (9) of the connection assembly are made of stainless steel, while the clamping ring (10) and the peripheral ferrule (4) are made of an engineering plastic. 6. Coupling according to claim 3, wherein the nipple (2) and the outer sleeve (9) of the connection assembly are made of stainless steel, while the clamping ring (10) and the peripheral ferrule (4) are made of an engineering plastic.
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