NZ328354A - Pipe connection assembly with connector sleeve located relative to one pipe and with outer heat shrunk sleeve applied - Google Patents
Pipe connection assembly with connector sleeve located relative to one pipe and with outer heat shrunk sleeve appliedInfo
- Publication number
- NZ328354A NZ328354A NZ32835497A NZ32835497A NZ328354A NZ 328354 A NZ328354 A NZ 328354A NZ 32835497 A NZ32835497 A NZ 32835497A NZ 32835497 A NZ32835497 A NZ 32835497A NZ 328354 A NZ328354 A NZ 328354A
- Authority
- NZ
- New Zealand
- Prior art keywords
- pipe
- assembly
- connection member
- pipes
- connector
- Prior art date
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
New Zealand No. 328354 International No. PCT/
TO BE ENTERED AFTER ACCEPTANCE AND PUBLICATION
Priority dates: 16.07.1997
Complete Specification Filed: 16.07.1997
Classification^) F16L21/00
Publication date: 27 April 1998
Journal No.: 1427
NEW ZEALAND PATENTS ACT 1953
COMPLETE SPECIFICATION
Title of Invention:
Improvements in or relating to manhole or similar connectors
Name, address and nationality of applicant(s) as in international application form:
JAMES WILLIAM MCNEIL, a New Zealand citizen of 31 Onedin Place, Titirangi, Auckland, New Zealand
• 32 83 5
NEW ZEALAND PATENTS ACT 1953 0 COMPLETE SPECIFICATION
IMPROVEMENTS IN OR RELATING TO MANHOLE OR SIMILAR CONNECTORS
JAMES WILLIAM MCNEIL, a New Zealand Citizen, of 31 Onedin Place, Titirangi, Auckland, New Zealand hereby declare the invention, for which I pray that a pr.ient may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement:
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This invention relates to connectors si«ch as manhole connecfors provided as a factory made manhole connector. However, the invention is not limited to this application.
It is an object of the present invention to provide a connector which will at least go 10 some way toward overcoming disadvantages with existing connectors, or which will at least provide the public with a useful choice.
Accordingly, in one aspect the invention consists in a connector assembly comprising a first short pipe for fixing into a manhole or similar drainage fitting, 15 a generally cylindrical connection member a first end of which is disposed about an outer surface of an open end of the first short pipe,
a second short pipe having an open end for joining to a drain pipe,
a second end of the connection member being disposed about an outer surface of the connected end of the second short pipe,
the connection member having a locating means to locate the connection member relative to at least the first short pipe, and a heat shrunk plastics sleeve member engaged with an outer surface of the connection member and an outer surface of each of the first and second short pipes, the sleeve being shrunk thereover after assembly of the first and second pipes, the 25 assembly providing a joint which resists longitudinally applied forces tending to part the first and second pipes.
To those skilled in the art to which the invention relates, many changes in construction and widely differing embodiments and applications of the invention will suggest 30 themselves without departing from the scope of the invention as defined in the appended claims. The disclosures and the descriptions herein are purely illustrative and are not intended to be in any sense limiting.
The invention consists in the foregoing and also envisages constructions of which the 35 following gives examples only.
One preferred form of the invention and modifications thereof will now be described with reference to the accompanying drawings in which:
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328354
Figure 1 is an elevation and cross-section of a first embodiment of the invention; and
Figure 2 is an elevation and cross-section of a second embodiment of the invention.
Referring to figure 1, a connection assembly is shown generally referenced 1. The connector comprises a first short pipe 2 which is preferably constructed from a plastics material or from a vitrified clay material, being a manhole short. Of course, the first pipe 2 could comprise another material, such as a concrete material for example. The pipe 2 has a connected end 4 which is open for connection to a second short pipe 6. The other send 15 8 of the first pipe 2 is open. In use, the assembly is used in a manhole or similar drainage installation, the first pipe 2 being grouted or otherwise fixed into the side of a concrete manhole so that end 8 is the end through which the manhole is accessed, and the open end 10 of the second pipe 6 is in use connected to a drainpipe such as a plastics drainpipe using the known z seal at point 3.
The second pipe 6 has a connected end 12 which is substantially adjacent to connected end 4 of the first pipe 2. The second pipe 6 is preferably constructed from a plastics material, although other materials may be used. The plastics material which is preferably used is, for example, a 1500mm diameter heavy wall socketed, unplasticised polyvinyl 25 chloride (uPVC) short.
The connected ends 4 and 12 of the first and second short pipe respectively have a connector member 14 provided about outer surfaces thereof. The connector member 14 preferably comprises a plastics material (although other materials may be used) and is 30 generally cylindrical in form so as to accommodate the substantially cylindrical outer surfaces of the ends of the first and second pipes. The connector 14 preferably, but not necessarily, includes at least one ridge 16 which provides shoulders 18 and 20 for secure mechanical engagement with a sleeve 22 (described further below).
The connector member 14 also includes locating means comprising an abutment surface 24 that makes contact with end surface 26 of the first pipe 2. The abutment surface 24 provides a way for a user to locate the connector member 14 relative to at least the first pipe during the process of assembling the connector assembly. In use, the abutment
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•
surface 24 prevents movement of the connector relative to the first pipe when the first pipe is experiencing forces or movement in a lonaitudinal direction (that is to say parallel to centre line 30 in figure 1) in a direction toward the second pipe.
Seals are also preferably, but not necessarily, provided between the connector member 10 14 and the pipes 2 and 6. Seals may not be required if the materials and tolerances of the pipes and connection member make a sufficiently good connection. Also, the plastics sleeve 22 may in some cases provide a sufficient seal. Thus a first seal 32 is provided between an outer surface 34 of first pipe 2 and an inner surface 36 of the connector member. The connector member may have a rebate or other engagement surface 38 15 provided for location of the seal 32. Similarly, a second seal 40 is provided between an outer surface of the second pipe and an inner surface of the connection member 14. Again, a rebate or other suitable engagement surface 42 may be provided in the connection member. The seals 32 and 40 are preferably constructed from an elastomer material, for example. Other materials may be used provided they have the desired 20 physical properties to provide a seal which is substantially watertight between the connection member and the first and second pipes.
To assemble the connection assembly, the first seal, for example is located about an outer surface of the first pipe and is preferably glued in place. Glue is placed about the outer 25 surface of the seal 32 and the connection member is placed about the outer surfaces of the first pipe and in contact with the seal 32 so that the seal is glued both to the first pipe and to the connector member. The seal 42 is then placed about an outer surface of the second pipe, again being glued in place for example and glue being disposed about an outer surface of the seal so that the second pipe may be placed into the other end of the 30 connector member so that there is a sealing engagement between the second pipe, the second seal 42 and the connector member. Alternatively the seals 32 and 42 are firstly located within the connector member, then the pipes are inserted into the ends of the connector member. Although this arrangement creates a substantial sealing engagement, the assembly needs to be sufficiently physically robust to resist longitudinal forces which 35 may tend to part the two pipes. Therefore, as a final step, a plastics locating sleeve 22 is placed over the connector member 14 and is sufficiently long so that it also overlaps outer surfaces 44 and 46 of the first and second pipes which are not already covered by the connecting member 14. The sleeve 22 is made of a heat shrinkable plastics material, so
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heat is applied to the sleeve which makes it shrink to take up the configuration illustrated in figure 1 in which it is tightly located about the connector and adjacent outer surfaces of the pipes. As can be seen from figure 1, the sleeve engages with shoulders 20 and 18 of ridge 16, and also engages with the shoulder 48 created by the end of the connector member 14. The heat shrunk sleeve 22 therefore provides a connection which holds the 10 parts of the assembly in place to provide a substantially watertight semi-rigid connection. The connection is also temper proof since it cannot be interfered with without damaging the heat shrunk plastic locating sleeve 22. Due to the materials from which the assembly is made there is also some flexibility in the arrangement which is important in situations such as manholes where the environment in which the assembly is located may be 15 subjected to movement or vibration.
Referring to figure 2, a second embodiment of the invention is shown, and in figure 2 the same reference numerals are used as in figure 1 to depict similar features between the two embodiments. As can be seen in figure 2, the second seal 42 has a different shape, 20 and in addition the connector 14 has an additional ridge 50 providing two additional shoulders 52 and 54. Furthermore, the connector 14 in figure 2 has a locating means comprising an abutment surface 24 which is provided by an inward annular projection 56.
The projection 56 may also be used to locate the connector of the embodiment relative to 25 the second pipe, by abutting the second pipe.
Figure 2 also includes a second seal locating means 58 to locate the second seal relative to the connector 14.
The invention provides a connection assembly whereby the parts of the assembly are connected together by the use of a heat shrinkable plastic locating sleeve and a connector member which is capable of being located relative to one or more of the pipes. The invention is applicable to most sizes and types of uPVC, plastic, clay, vitrified clay and concrete materials and mixing systems for uPVC and similar pipes.
The present invention also has considerable advantages in that it provides a waterproof flexible joint which has some ability to cope with misalignment of the first and second short
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pipes and with misalignment between the manhole installation and the drainpipe to which a second pipe is to be connected.
The connection assembly is preferably made in a factory, so it cannot be interfered with without damaging the joint which would be obvious upon factory inspection, so the unit 10 can be safely and securely made as a unitary assembly before being placed in a manhole or similar drain system using known methods.
6
Claims (9)
1. A connector assembly comprising a first short pipe for fixing into a manhole or similar drainage fitting, a generally cylindrical connection member a first end of which is disposed 10 about an outer surface of an open end of the first short pipe, a second short pipe having an open end for joining to a drain pipe, a second end of the connection member Lsing disposed about an outer surface of the connected end of the second short pipe, the connection member having a locating means to locate the connection 15 member relative to at least the first short pipe, and a heat shrunk plastics sleeve member engaged with an outer surface of the connection member and an outer surface of each of the first and second short pipes, the sleeve being shrunk thereover after assembly of the first and second pipes, the assembly providing a joint which resists longitudinally applied forces tending to part the 20 first and second pipes.
2. A connector assembly as claimed in claim 1 including a first seal provided between an inner surface of the connection member and an outer surface of the first short pipe. 25
3. A connector assembly as claimed in claim 1 or claim 2 including a second seal provided between an inner surface of the connection member and an outer surface of the second short pipe. 30
4. A connector assembly as claimed in any one of the preceding claims wherein the connection member has at least one shoulder thereon for engagement with the plastics sleeve.
5. A connector assembly as claimed in any one of the preceding claims wherein the 35 locating means comprises an abutment surface for abutting an end surface of one of the first or second pipes so as to substantially prevent relative movement between the connection member and the first or second pipe when the first or second pipe is moved in a longitudinal direction toward the other pipe. N.Z. PATENT OFRCE 2 9 AUG 1997 RECEIVED 5 32 83 5
6. An assembly as claimed in any one of the preceding claims wherein the first pipe is constructed from a plastics material.
7. An assembly as claimed in any one of the preceding claims wherein the second 10 pipe comprises an unplasticised polyvinyl chloride material.
8. An assembly as claimed in any one of the preceding claims wherein an elastomer seal is provided between the connector and one or both of the first and second pipes. 15
9. A connection assembly substantially as herein described with reference to and as illustrated by the accompanying drawings. \ \ 6 JUL I ' '• ''' II V--,- - •—' ■ J-K' by the authorised agent KNOWLES & ASSOCIATES ,6 JiJy (Hm 8
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ32835497A NZ328354A (en) | 1997-07-16 | 1997-07-16 | Pipe connection assembly with connector sleeve located relative to one pipe and with outer heat shrunk sleeve applied |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ32835497A NZ328354A (en) | 1997-07-16 | 1997-07-16 | Pipe connection assembly with connector sleeve located relative to one pipe and with outer heat shrunk sleeve applied |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ328354A true NZ328354A (en) | 1998-04-27 |
Family
ID=19926355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NZ32835497A NZ328354A (en) | 1997-07-16 | 1997-07-16 | Pipe connection assembly with connector sleeve located relative to one pipe and with outer heat shrunk sleeve applied |
Country Status (1)
Country | Link |
---|---|
NZ (1) | NZ328354A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8870490B2 (en) | 2011-02-04 | 2014-10-28 | Opus International Consultants Limited | Adjustable supports for access hatch frames |
-
1997
- 1997-07-16 NZ NZ32835497A patent/NZ328354A/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8870490B2 (en) | 2011-02-04 | 2014-10-28 | Opus International Consultants Limited | Adjustable supports for access hatch frames |
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Legal Events
Date | Code | Title | Description |
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RENW | Renewal (renewal fees accepted) | ||
RENW | Renewal (renewal fees accepted) | ||
RENW | Renewal (renewal fees accepted) | ||
EXPY | Patent expired |