WO1995024581A1 - Pipe fitting, particularly between plastic pipe and metal pipe - Google Patents

Pipe fitting, particularly between plastic pipe and metal pipe Download PDF

Info

Publication number
WO1995024581A1
WO1995024581A1 PCT/IT1995/000033 IT9500033W WO9524581A1 WO 1995024581 A1 WO1995024581 A1 WO 1995024581A1 IT 9500033 W IT9500033 W IT 9500033W WO 9524581 A1 WO9524581 A1 WO 9524581A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
pipe fitting
casing part
accordance
plastic
Prior art date
Application number
PCT/IT1995/000033
Other languages
French (fr)
Inventor
Lino Savardi
Original Assignee
Afa S.R.L.
Hepworth Building Products
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Afa S.R.L., Hepworth Building Products filed Critical Afa S.R.L.
Priority to AU19592/95A priority Critical patent/AU1959295A/en
Publication of WO1995024581A1 publication Critical patent/WO1995024581A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/091—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers

Definitions

  • the present invention concerns a pipe fitting, particularly between plastic pipe and metal pipe.
  • the invention concerns a pipe fitting that makes it possible to connect pipes of plastic materials simply and quickly to metal pipes.
  • metal pipes are connected to each other using threaded metal pipe fittings.
  • the fittings proposed in more recent times are the so-called fast-coupling fittings, made in such a way as to permit extremely fast seal coupling of plastic pipes.
  • Another object of the present invention is to supply a pipe fitting with thickness dimensions that are smaller than those currently available.
  • the solution proposed, according to the present invention aims to satisfy the requirement cited, resolving the problem mentioned above, by proposing a pipe fitting made of metal that has at least one end to be threaded for coupling with a metal pipe, and one socket and to fit into a pipe made of plastic material.
  • the specific object of the present invention is a pipe fitting, particularly between plastic pipe and metal pipe, which has at least one threaded end, for coupling with a metal pipe, and at least one fast connection end, socket structured for connection with a pipe made of plastic material.
  • said at least one end, socket structured includes an external casing part, a pipe locking jaw, inside said casing part, a seal element and an internal metal washer, positioned by the open end part of said casing part, the end casing part becoming distorted at its end, so as to lock said internal metal washer.
  • said at least one socket structured end has an external casing part, a pipe locking jaw made of plastic, inside said casing part, seal elements and spacers, and ring-shaped items, particularly a Seeger ring, that keep said seal element and spacers and said jaw inside said external casing part.
  • At least one socket structured end has an external casing part, threaded at its end, a pipe locking jaw made of plastic, inside said casing part, seal elements, and a nut, preferably willed on the outside, fitted with threading for coupling with the threading of said casing part.
  • the casing part has a female threading and the nut has a male threading, the outside diameter of the casing part and the nut corresponding substantially.
  • the pipe fitting in accordance with the invention can be an L-shaped peece or elbow, a T-shaped piece, straight, a long passage nipple, etc., according to the specific requirements of the installation.
  • said pipe fitting will preferably be made of brass.
  • figure 1 is a side view, partially sectional, of a first embodiment of the pipe fitting according to the invention
  • figure 2 is an exploded view, partially sectional, of the pipe fitting of figure 1
  • figure 3 is a side view, partially sectional, of a second embodiment of the pipe fitting according to the invention
  • figure 4 is an exploded view, partially sectional, of the pipe fitting of figure
  • figure 5 is a side view, partially sectional, of a third embodiment of the pipe fitting according to the invention
  • figure 6 is an exploded view, partially sectional, of the pipe fitting of figure 5.
  • Pipe fitting 1 has a brass casing 2, with a threaded end 3 and a socket end 4.
  • a metal pipe which is not shown, is coupled onto the threaded end 3 by screwing it on, while a plastic pipe, this again not shown, is coupled onto the socket end 4.
  • the socket part 4 includes a stainless steel jaw 5 inside the casing 2, to lock the pipe, a wather wade made of PVC 6 and an O-ring 7.
  • a brass washer a Fitted into the open end of the part 4 is a brass washer a which is used to lock the connection elements inside the casing 2.
  • the pipe fitting 11 in this case, on the socket structured part 14 has a spacer washer instead of the brass washer 19, made of Teflon, and a Seeger-type locking ring 20.
  • This structure performs the same functions as coupling casing 2 - washer 8 of the previous embodiment.
  • the locking of the ring 27, of the washer 26 and of the jaw 25 is realized by means of a milled nut 31 that is coupled by screwing it on, by meand of the male threading 32 on the end part of the casing 22, fitted with threading 33. It may be noted that externally the casing 22 and the nut 31 have the same diameter.
  • the nut 31 has a milling 34 on the outside to facilitate tightening and removal.
  • the present invention has been described in an illustrative but not .imitative way according to its preferred embodiments, but it must be understood that variations and/or modifications may be made by those skilled in the art without this lying outside the relative scope of the invention, as defined by the enclosed claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Domestic Plumbing Installations (AREA)

Abstract

The present invention relates to a pipe fitting (1, 11, 21), particularly between plastic pipe and metal pipe, which has at least one threaded end (3, 13, 23), for coupling with a metal pipe, and at least one fast connection end (4, 14, 24), socket structured for connection with a pipe made of plastic material.

Description

Pipe fitting, particularly between plastic pipe and metal pipe
The present invention concerns a pipe fitting, particularly between plastic pipe and metal pipe.
More particularly, the invention concerns a pipe fitting that makes it possible to connect pipes of plastic materials simply and quickly to metal pipes.
As is well known, there are different types of pipe fittings for connecting plastic pipes, and also pipe fittings for connecting metal pipes.
In particular, metal pipes are connected to each other using threaded metal pipe fittings.
As regards pipes made of plastic material, the fittings proposed in more recent times are the so-called fast-coupling fittings, made in such a way as to permit extremely fast seal coupling of plastic pipes.
Nevertheless, when it is necessary to connect a plastic pipe to a metal pipe, certain not inconsequential practical problems arise, as there are no specific pipe fittings for this purpose; so it is necessary to use particular solutions that are difficult to put into effect. This type of problem area presents itself, for instance, when an installation needs to be restructered, so it is necessary to fit sections of plastic tubing, which are used predominantly these days, in an installation that was originally made using metal piping.
Again, this type of problem does arise, however, when connections are made from the installation using plastic piping to cocks, taps and valves.
In view of the above, it seems very clear that it is necessary and advantangeous to be able to make use of a pipe fitting that allows direct coupling between plastic pipes and metal pipe's.
Another object of the present invention is to supply a pipe fitting with thickness dimensions that are smaller than those currently available.
The solution proposed, according to the present invention, aims to satisfy the requirement cited, resolving the problem mentioned above, by proposing a pipe fitting made of metal that has at least one end to be threaded for coupling with a metal pipe, and one socket and to fit into a pipe made of plastic material.
Therefore, the specific object of the present invention is a pipe fitting, particularly between plastic pipe and metal pipe, which has at least one threaded end, for coupling with a metal pipe, and at least one fast connection end, socket structured for connection with a pipe made of plastic material.
According to a first embodiment of the pipe fitting according to the invention.said at least one end, socket structured, includes an external casing part, a pipe locking jaw, inside said casing part, a seal element and an internal metal washer, positioned by the open end part of said casing part, the end casing part becoming distorted at its end, so as to lock said internal metal washer. In a further embodiment of the pipe fitting according to the invention, said at least one socket structured end has an external casing part, a pipe locking jaw made of plastic, inside said casing part, seal elements and spacers, and ring-shaped items, particularly a Seeger ring, that keep said seal element and spacers and said jaw inside said external casing part. Again according to the invention, at least one socket structured end has an external casing part, threaded at its end, a pipe locking jaw made of plastic, inside said casing part, seal elements, and a nut, preferably willed on the outside, fitted with threading for coupling with the threading of said casing part. Preferably, the casing part has a female threading and the nut has a male threading, the outside diameter of the casing part and the nut corresponding substantially.
The pipe fitting in accordance with the invention can be an L-shaped peece or elbow, a T-shaped piece, straight, a long passage nipple, etc., according to the specific requirements of the installation.
Again according to the invention, said pipe fitting will preferably be made of brass.
Obviously, should it be necessary, it can have all its ends as sockets, for connecting plastic pipes only. The present invention will now be described, for illustrative but not limitative purposes according to its preferred embodiments, with particular reference to the enclosed figures of the drawings, wherein: figure 1 is a side view, partially sectional, of a first embodiment of the pipe fitting according to the invention; figure 2 is an exploded view, partially sectional, of the pipe fitting of figure 1 ; figure 3 is a side view, partially sectional, of a second embodiment of the pipe fitting according to the invention; figure 4 is an exploded view, partially sectional, of the pipe fitting of figure
3; figure 5 is a side view, partially sectional, of a third embodiment of the pipe fitting according to the invention; and figure 6 is an exploded view, partially sectional, of the pipe fitting of figure 5.
Observing first figures 1 and 2, a first embodiment of the pipe fitting according to the invention may be noted.
Pipe fitting 1 has a brass casing 2, with a threaded end 3 and a socket end 4.
A metal pipe, which is not shown, is coupled onto the threaded end 3 by screwing it on, while a plastic pipe, this again not shown, is coupled onto the socket end 4.
The socket part 4 includes a stainless steel jaw 5 inside the casing 2, to lock the pipe, a wather wade made of PVC 6 and an O-ring 7.
Fitted into the open end of the part 4 is a brass washer a which is used to lock the connection elements inside the casing 2.
Once the washer 6 is fitted into the casing 2, the end part of the latter is distorted, locking it so that it is irremovable. Going on now to observe figures 3 and 4, a second form of realization of the pipe fitting in accordance with the invention is shown. The parts corresponding to those in figures 1 and 2 are indicated with the same reference numbers, preceded by a 1.
The pipe fitting 11 in this case, on the socket structured part 14 has a spacer washer instead of the brass washer 19, made of Teflon, and a Seeger-type locking ring 20.
This structure performs the same functions as coupling casing 2 - washer 8 of the previous embodiment.
Now observing the figures 5 and 6, a third embodiment of the pipe fitting according to the invention is shown. In this case too, the parts corresponding to those of the solution" according to Figures 1 and 2 are indicated with the same reference numbers, preceded by a 2.
In the solution shown, the locking of the ring 27, of the washer 26 and of the jaw 25 is realized by means of a milled nut 31 that is coupled by screwing it on, by meand of the male threading 32 on the end part of the casing 22, fitted with threading 33. It may be noted that externally the casing 22 and the nut 31 have the same diameter.
The nut 31 has a milling 34 on the outside to facilitate tightening and removal. The present invention has been described in an illustrative but not .imitative way according to its preferred embodiments, but it must be understood that variations and/or modifications may be made by those skilled in the art without this lying outside the relative scope of the invention, as defined by the enclosed claims.

Claims

1. Pipe fitting, particularly between plastic pipe and metal pipe, characterized in that it has at least one threaded end, for coupling with a metal pipe, and at least one fast connection end, socket structured for connection with a pipe made of plastic material.
2. Pipe fitting, according to claim 3, characterized in that at least one end, socket structured, includes an external casing part, a pipe locking jaw, inside said casing part, a seal element and an internal metal washer, positioned by the open end part of said casing part, the end casing part becoming distorted at its end, so as to lock said internal metal washer.
3. Pipe fitting in accordance with claim 1 , characterized in that at least one socket structured end has an external casing part, a pipe locking jaw made of plastic, inside said casing part, seal elements and spacers, and ring-shaped items, that keep said seal element and spacers and jaw inside said external casing part.
4. Pipe fitting in accordance with claim 3, characterized in that said ring-shaped items consist of a Seeger ring.
5. Pipe fitting in accordance with claim 1 , characterized in that at least one socket structured end has an external casing part, threaded at its end, a pipe locking jaw made of plastic, inside said casing part, seal elements, and a nut, fitted with threading for coupling with the threading of said casing part.
6. Pipe fitting in accordance with claim 5, characterized in that said nut is milled on the outside.
7. Pipe fitting in accordance with claim 5 or 6, characterized in that the casing part has a female threading and the nut has a male threading, the outside diameter of the casing part and the nut corresponding substantially.
8. Pipe fitting in accordance with one of the previous claims, characterized in that it is L-shaped or elbow, T-shaped, straight, a long passage nipple, etc., according to the specific requirements of the installation.
9. Pipe fitting in accordance with one of the previous claims, characterized in that said pipe fitting is made of brass.
10. Pipe fitting in accordance with one of the previous claims, characterized in that, should it be necessary, it can have all its ends as sockets, for connecting plastic pipes only.
11. Pipe fitting, particularly between plastic pipe and metal pipe, in accordance with any one of the previous claims, substantially as illustrated and described.
PCT/IT1995/000033 1994-03-09 1995-03-08 Pipe fitting, particularly between plastic pipe and metal pipe WO1995024581A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU19592/95A AU1959295A (en) 1994-03-09 1995-03-08 Pipe fitting, particularly between plastic pipe and metal pipe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM940046 IT233106Y1 (en) 1994-03-09 1994-03-09 FITTING, IN PARTICULAR BETWEEN PLASTIC PIPE AND METALLIC PIPE.
ITRM94U000046 1994-03-09

Publications (1)

Publication Number Publication Date
WO1995024581A1 true WO1995024581A1 (en) 1995-09-14

Family

ID=11402193

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1995/000033 WO1995024581A1 (en) 1994-03-09 1995-03-08 Pipe fitting, particularly between plastic pipe and metal pipe

Country Status (3)

Country Link
AU (1) AU1959295A (en)
IT (1) IT233106Y1 (en)
WO (1) WO1995024581A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001050054A3 (en) * 2000-01-05 2002-02-14 Giacomini Spa Quick fitting for fluid system pipes
EP3199855A1 (en) * 2016-01-28 2017-08-02 Voss Automotive GmbH Coupling body for reversibly connecting a pipeline
DE102016101533A1 (en) * 2016-01-28 2017-08-03 Voss Automotive Gmbh Coupling body for a plug connection of pipelines, in particular plastic pipelines

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584474A1 (en) * 1985-07-02 1987-01-09 Parker Hannifin Rak Sa Claw connection
GB2178501A (en) * 1985-07-27 1987-02-11 Victaulic Plc Pipe couplings
FR2591309A1 (en) * 1985-12-11 1987-06-12 Capri Codec Sa Hydraulic connector with rapid manual connection for a fluid pipeline
DE3923579A1 (en) * 1988-07-21 1990-01-25 Schaefer Stettiner Schrauben Connector for plastics pipes - is in one piece with widening bore socket for holding ring and sealing ring
DE4304241A1 (en) * 1993-02-12 1994-08-18 Hummel Anton Verwaltung Plug-in connection for pipes, hoses or similar round bodies

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584474A1 (en) * 1985-07-02 1987-01-09 Parker Hannifin Rak Sa Claw connection
GB2178501A (en) * 1985-07-27 1987-02-11 Victaulic Plc Pipe couplings
FR2591309A1 (en) * 1985-12-11 1987-06-12 Capri Codec Sa Hydraulic connector with rapid manual connection for a fluid pipeline
DE3923579A1 (en) * 1988-07-21 1990-01-25 Schaefer Stettiner Schrauben Connector for plastics pipes - is in one piece with widening bore socket for holding ring and sealing ring
DE4304241A1 (en) * 1993-02-12 1994-08-18 Hummel Anton Verwaltung Plug-in connection for pipes, hoses or similar round bodies

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001050054A3 (en) * 2000-01-05 2002-02-14 Giacomini Spa Quick fitting for fluid system pipes
EP3199855A1 (en) * 2016-01-28 2017-08-02 Voss Automotive GmbH Coupling body for reversibly connecting a pipeline
DE102016101533A1 (en) * 2016-01-28 2017-08-03 Voss Automotive Gmbh Coupling body for a plug connection of pipelines, in particular plastic pipelines
US20190040983A1 (en) * 2016-01-28 2019-02-07 Voss Automotive Gmbh Coupling body for a plug connection of pipelines, in particular plastic pipelines
EP3534050A1 (en) * 2016-01-28 2019-09-04 Voss Automotive GmbH Coupling body for a pipe connector, in particular for plastic pipes
EP3408574B1 (en) * 2016-01-28 2020-01-22 Voss Automotive GmbH Coupling body for a plug connection of pipelines, in particular plastic pipelines
US10948116B2 (en) 2016-01-28 2021-03-16 Voss Automotive Gmbh Coupling body for a plug connection of pipelines, in particular plastic pipelines

Also Published As

Publication number Publication date
IT233106Y1 (en) 2000-01-26
ITRM940046U1 (en) 1995-09-09
ITRM940046V0 (en) 1994-03-09
AU1959295A (en) 1995-09-25

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