GB2045883A

GB2045883A - Pipe joint

Info

Publication number: GB2045883A
Application number: GB7936940A
Authority: GB
Original assignee: Lucky Ltd
Current assignee: LG Corp
Priority date: 1979-04-02
Filing date: 1979-10-24
Publication date: 1980-11-05
Also published as: IT7922948V0; ES245632U; SE7907634L; IT7926722A0; IT1207273B; ES245632Y; KR800000478Y1; GB2045883B; CA1135299A; CH641887A5; FR2453346A1; FI793464A

Abstract

A pipe fitting comprises a male member 10 and a female element 3, the element 3 having a wide section 4 of a diameter greater than the diameter of the male member 10. A flange 7 is provided on the element 3 substantially parallel to the wide section 4 and spaced radially inwardly thereof. The flange 7 and the wide section 4 together form a socket 8. The male member 10 slides into the socket 8 to form the joint. In the preferred form of the device, a retaining groove 5 is provided on the wide section 4. The groove 5 contains a sealing ring 6 which bears against the outer wall of the male member 10. <IMAGE>

Description

SPECIFICATION Pipe joint The present application relates to an improved joint for pipes, for specifically for pipes made of plastics material.

In the past, it has been known to join two pieces of pipe together by various means. For example, a male half is sometimes formed with a taper at an end there, which taper fits into a female member. Such joints are operative, but lack flexibility and tightness.

Modifications of such joints include those in which a flange is provided on the outer member which flange contains a sealing ring. The ring bears against the inner member and substantially prevents leakage. Even such joints, however, have no axial flexibility. The inner portion must be forced into the outer one as far as it will go in order to obtain a tight seal and a firm joint.

In prior art devices of this general character, there is usually a gap between the end of the male member and a shoulder of the female member. This gap provides a hollow which encourages the deposit of any solids entrained in the fluid flowing in the pipe. As a result, such joints are subjected to being clogged and the flow therethrough restricted.

It is, therefore, among the objects of this invention to provide a pipe joint which has substantially smooth interior walls and which will minimize deposition and build-up of any entrained solids.

It is also among the objects of the present invention to provide a pipe joint which not only seals well, but permits axial adjustment.

According to the present invention there is provided a pipe fitting comprising a female element adapted for use with a male tubular member, said female element having a wide section of diameter greater than the diameter of the male member with which it is to be employed, a flange on said female element substantially parallel to said wide section and spaced inwardly thereof to form a socket therebetween for receiving an end of a said male member.

A A retainer, consisting of a portion of the section of greater diameter than the remainder thereof, is generally provided on the wide section. Within the retainer, a sealing ring is positioned in use so that, when the male member is in the socket, the inner surface of the ring bears against the outer wall of the member. In this manner, the seal is effected.

Embodiments of the pipe fitting according to the present invention will now be described by reference to the accompanying drawings, in which like reference characters indicate like parts, and in which Figure 7 is a perspective view of one embodiment of a fitting according to the present invention; Figure 2 is a section along line 2-2 of Figure 1; Figure 3 is an enlarged fragmentary sectional view of the embodiment of Figures 1 and 2; Figure 4 is a view similarto that of Figure 3 of another embodiment of the fitting of the present invention.

Referring more specifically to Figure 2 of the drawings, pipe joint 1 comprises a female element 3, provided with a wide section 4 and a flange 7 which together form a socket 8.

In addition, section 4 contains a retainer 5 which holds a sealing ring 6 in place. Sealing ring 6 bears in use against an outer wall 10 of a pipe member 2 in order to form the desired seal.

In the embodiment of the invention shown on Figure 4, flange 7 is straight and parallel to section 4.

The outer wall 10 of the pipe member 2 fits into the socket 8. It is preferred to provide a bevel 11 at the free end of the flange 7. Thus, when the joint is complete, the flow of fluid is as smooth as possible.

As a result, the tendency of entrained solis to deposit and build up at this point is minimized.

It is unnecessary for the end of member 2 actually to contact the bottom of socket 8. Since the seal is effected by ring 6 in retainer 5, a substantial amount of axial adjustment is permitted without any loss of fluid tightness.

The pipe fitting of this invention can be located at the end of a further tubular member and may be integral therewith or affixed thereto.

Additionally the internal diameter of the fitting can be substantially the same as, or different from, the internal diameter of the male tubular member with which it is to be employed.

Moreover, the pipe fitting may be adapted to connect together two tubular members and for this purpose may be provided at each end thereof with a said wide section and a said flange thus to form two said sockets for receiving therein the respective ends of said tubular members. It will be apparent that in such a case the fitting may be adapted to join together tubular members of the same size as, or of different sizes from, each other.

While only a limited number of specific embodiments of this invention have been expressly described, the scope of the present invention is to be limited only by the claims appended hereto.

1. A pipe fitting comprising a female element adapted for use with a male tubular member, said female element having a wide section of diameter greater than the diameter of the male member with which it is to be employed, a flange on said female element substantially parallel to said wide section and spaced inwardly thereof to form a socket therebetween for receiving an end of a member.

2. A fitting according to Claim 1, wherein a retainer is provided on said wide section for location therein of a sealing ring adapted in use to bear against the outside of a said male member to effect a seal.

3. A fitting according to Claim 1 or 2, wherein said flange tapers towards its free end, thereby to facilitate entry of the end of a said male member into said socket.

4. A fitting according to claim 1, 2, or 3 wherein said flange has a bevel on the free end thereof.

5. A fitting according to any one of the preceding claims where said male tubular member constitutes a pipe.

6. A fitting according to any one of the preceding

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Pipe joint The present application relates to an improved joint for pipes, for specifically for pipes made of plastics material. In the past, it has been known to join two pieces of pipe together by various means. For example, a male half is sometimes formed with a taper at an end there, which taper fits into a female member. Such joints are operative, but lack flexibility and tightness. Modifications of such joints include those in which a flange is provided on the outer member which flange contains a sealing ring. The ring bears against the inner member and substantially prevents leakage. Even such joints, however, have no axial flexibility. The inner portion must be forced into the outer one as far as it will go in order to obtain a tight seal and a firm joint. In prior art devices of this general character, there is usually a gap between the end of the male member and a shoulder of the female member. This gap provides a hollow which encourages the deposit of any solids entrained in the fluid flowing in the pipe. As a result, such joints are subjected to being clogged and the flow therethrough restricted. It is, therefore, among the objects of this invention to provide a pipe joint which has substantially smooth interior walls and which will minimize deposition and build-up of any entrained solids. It is also among the objects of the present invention to provide a pipe joint which not only seals well, but permits axial adjustment. According to the present invention there is provided a pipe fitting comprising a female element adapted for use with a male tubular member, said female element having a wide section of diameter greater than the diameter of the male member with which it is to be employed, a flange on said female element substantially parallel to said wide section and spaced inwardly thereof to form a socket therebetween for receiving an end of a said male member. A A retainer, consisting of a portion of the section of greater diameter than the remainder thereof, is generally provided on the wide section. Within the retainer, a sealing ring is positioned in use so that, when the male member is in the socket, the inner surface of the ring bears against the outer wall of the member. In this manner, the seal is effected. Embodiments of the pipe fitting according to the present invention will now be described by reference to the accompanying drawings, in which like reference characters indicate like parts, and in which Figure 7 is a perspective view of one embodiment of a fitting according to the present invention; Figure 2 is a section along line 2-2 of Figure 1; Figure 3 is an enlarged fragmentary sectional view of the embodiment of Figures 1 and 2; Figure 4 is a view similarto that of Figure 3 of another embodiment of the fitting of the present invention. Referring more specifically to Figure 2 of the drawings, pipe joint 1 comprises a female element 3, provided with a wide section 4 and a flange 7 which together form a socket 8. In addition, section 4 contains a retainer 5 which holds a sealing ring 6 in place. Sealing ring 6 bears in use against an outer wall 10 of a pipe member 2 in order to form the desired seal. In the embodiment of the invention shown on Figure 4, flange 7 is straight and parallel to section 4. The outer wall 10 of the pipe member 2 fits into the socket 8. It is preferred to provide a bevel 11 at the free end of the flange 7. Thus, when the joint is complete, the flow of fluid is as smooth as possible. As a result, the tendency of entrained solis to deposit and build up at this point is minimized. It is unnecessary for the end of member 2 actually to contact the bottom of socket 8. Since the seal is effected by ring 6 in retainer 5, a substantial amount of axial adjustment is permitted without any loss of fluid tightness. The pipe fitting of this invention can be located at the end of a further tubular member and may be integral therewith or affixed thereto. Additionally the internal diameter of the fitting can be substantially the same as, or different from, the internal diameter of the male tubular member with which it is to be employed. Moreover, the pipe fitting may be adapted to connect together two tubular members and for this purpose may be provided at each end thereof with a said wide section and a said flange thus to form two said sockets for receiving therein the respective ends of said tubular members. It will be apparent that in such a case the fitting may be adapted to join together tubular members of the same size as, or of different sizes from, each other. While only a limited number of specific embodiments of this invention have been expressly described, the scope of the present invention is to be limited only by the claims appended hereto. CLAIMS

5. Afitting according to any of claims 1 to 4, wherein said flange has a bevel on the internal surface of the free end thereof.

6. A fitting according to any one of the preceding claims, wherein the flange comprises a continuous annulus.

7. Afitting according to any one of the preceding claims, wherein the female element is located at the end of a further tubular member.

8. A fitting according to claim 7, wherein the internal diameter of the further tubular member is selected to be the same as that of said, male pipe member with which the pipe fitting is to be employed.

9. A fitting according to claim 7 or 8, wherein the female element is integral with the said further member.

10. A fitting according to any one of claims 1 to 6, wherein the female element is adapted to connect together two male pipe members and comprises at each end thereof a said wide section and a said flange, thus to form sockets each for receiving an end of a said male pipe member.

11. A fitting according to claim 10, wherein the each said wide section and each said flange respectively have the same diameter.

12. A pipe fitting as claimed in 2 or in any of claims 3 to 11, when dependent thereupon, in which a a said sealing ring is located in the or each retainer.

13. A pipe fitting as claimed in claim 1 and substantially as hereinbefore described with reference to Figures 1, 2, and 3 or Figures 1, 2 and 4 of the accompanying drawings.

14. combination of a pipe fitting as claimed in any of claims 1 to 13 and one or more male tubular elements.

15. The features hereinbefore disclosed, or their equivalents, in any novel selection.

New claims or amendments to claims filed 23rd May 1980 Superseded claims 1,4 New or amended claims: Original claims 5 to 15 renumbered as 6 to 16 respectively and appendancies corrected.

1. A pipe fitting comprising a female element adapted for use with a male tubular member to form a pipe joint, said female element having a wide section of diameter greater than the diameter of the male member with which it is to be employed, a flange integral with said female element and spaced inwardly thereof to form a socket therebetween for receiving an end of the male member, said flange having a free end, wherein the flange is thinned towards its free end so as to reduce deposition at the pipe joint when in use.

4. Afitting according to claim 1, 2 or 3, wherein the flange is generally parallel to said wide section.