GB1525450A – Double-walled tubes
– Google Patents
GB1525450A – Double-walled tubes
– Google Patents
Double-walled tubes
Info
Publication number
GB1525450A
GB1525450A
GB29649/77A
GB2964977A
GB1525450A
GB 1525450 A
GB1525450 A
GB 1525450A
GB 29649/77 A
GB29649/77 A
GB 29649/77A
GB 2964977 A
GB2964977 A
GB 2964977A
GB 1525450 A
GB1525450 A
GB 1525450A
Authority
GB
United Kingdom
Prior art keywords
openings
tube
corrugations
walls
dies
Prior art date
1976-08-24
Legal status (The legal status 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 status listed.)
Expired
Application number
GB29649/77A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
1976-08-24
Filing date
1977-07-14
Publication date
1978-09-20
1977-07-14
Application filed by Individual
filed
Critical
Individual
1978-09-20
Publication of GB1525450A
publication
Critical
patent/GB1525450A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
F16L9/00—Rigid pipes
F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
B—PERFORMING OPERATIONS; TRANSPORTING
B26—HAND CUTTING TOOLS; CUTTING; SEVERING
B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
B—PERFORMING OPERATIONS; TRANSPORTING
B26—HAND CUTTING TOOLS; CUTTING; SEVERING
B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
B26F1/0053—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes by machining, e.g. cutting, grinding, projections on the tube wall
B—PERFORMING OPERATIONS; TRANSPORTING
B26—HAND CUTTING TOOLS; CUTTING; SEVERING
B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
B26F1/0061—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes whereby the tube moves axially or radially
B26F1/0069—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes whereby the tube moves axially or radially and the tool travels with the tube
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B29C48/25—Component parts, details or accessories; Auxiliary operations
B29C48/30—Extrusion nozzles or dies
B29C48/303—Extrusion nozzles or dies using dies or die parts movable in a closed circuit, e.g. mounted on movable endless support
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
B29C53/22—Corrugating
B29C53/30—Corrugating of tubes
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
F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C2793/00—Shaping techniques involving a cutting or machining operation
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C2793/00—Shaping techniques involving a cutting or machining operation
B29C2793/0045—Perforating
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
B29C49/0029—Making articles of indefinite length, e.g. corrugated tubes wherein the process is characterised by the pressure used, e.g. using varying pressure depending on sequence of cavity shapes
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
B29C49/003—Making articles of indefinite length, e.g. corrugated tubes wherein the process is characterised by temperature conditioning, e.g. using inside cooling by air
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
B29C49/006—Blow-moulding plants, e.g. using several blow-moulding apparatuses cooperating
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
B29L2016/00—Articles with corrugations or pleats
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
B29L2023/00—Tubular articles
B29L2023/18—Pleated or corrugated hoses
B29L2023/186—Pleated or corrugated hoses having a smooth internal wall
Abstract
1525450 Plastics tube W HEGLER 14 July 1977 [24 Aug 1976] 29649/77 Heading F2P [Also in Division B5] In making a double-walled tube of plastics material (particularly of polyethylene, polypropylene or polyamides) with a transversely corrugated outer wall 2 and a smooth inner wall 1, the corrugations are formed by means of a system of circulating dies, openings 4 are made either in the outer wall so as to connect the corrugation channels to the external atmosphere, or between the two walls (Fig. 8, not shown) so as to connect together the corrugation channels and the openings are subsequently welded closed after the inner tube has cooled. The openings may be pierced when the tube leaves the dies or when it is moving through the system of dies preferably when the tube walls are vertical or substantially so. Blister like elevations 3 may be formed in which the openings are pierced and the openings may be in the crest or the walls (Fig. 9, not shown) of the corrugations. The closing of the openings may be by hot surface welding or by ultrasonic welding. The height of the corrugations and the wavelength thereof can be 8 to 12% of the internal diameter of the tube.
GB29649/77A
1976-08-24
1977-07-14
Double-walled tubes
Expired
GB1525450A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2637995A
DE2637995C2
(en)
1976-08-24
1976-08-24
Process for the production of double-walled plastic pipes with an annularly corrugated outer wall and a smooth inner wall
Publications (1)
Publication Number
Publication Date
GB1525450A
true
GB1525450A
(en)
1978-09-20
Family
ID=5986188
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB29649/77A
Expired
GB1525450A
(en)
1976-08-24
1977-07-14
Double-walled tubes
Country Status (28)
Country
Link
US
(2)
US4145387A
(en)
JP
(1)
JPS6028656B2
(en)
AT
(1)
AT366315B
(en)
AU
(1)
AU506193B2
(en)
BE
(1)
BE858036A
(en)
BR
(1)
BR7705605A
(en)
CA
(1)
CA1061726A
(en)
CH
(1)
CH622984A5
(en)
CS
(1)
CS196373B2
(en)
DD
(1)
DD132728A5
(en)
DE
(1)
DE2637995C2
(en)
DK
(1)
DK375477A
(en)
ES
(1)
ES460822A1
(en)
FI
(1)
FI64074C
(en)
FR
(1)
FR2362715A1
(en)
GB
(1)
GB1525450A
(en)
GR
(1)
GR63991B
(en)
HU
(1)
HU175927B
(en)
IN
(1)
IN148290B
(en)
IT
(1)
IT1117833B
(en)
NL
(1)
NL7707369A
(en)
NO
(1)
NO772572L
(en)
NZ
(1)
NZ184598A
(en)
PL
(1)
PL110500B1
(en)
SE
(1)
SE422760B
(en)
SU
(1)
SU708992A3
(en)
TR
(1)
TR19812A
(en)
YU
(1)
YU201477A
(en)
Cited By (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2259045A
(en)
*
1991-08-30
1993-03-03
B & H Ltd
Double-walled tubular members and their manufacture
GB2300683A
(en)
*
1995-05-06
1996-11-13
Uponor Ltd
Flexible plastics pipe
US9309999B2
(en)
2011-03-29
2016-04-12
Norma Germany Gmbh
Directional fluid line
Families Citing this family (58)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2840174A1
(en)
1978-09-15
1980-03-20
Oltmanns Ziegelwerk
PLASTIC PIPE
IL55798A0
(en)
*
1978-10-25
1978-12-17
Drori Mordeki
Fluid distribution devices particularly useful for drip irrigation and mathod and apparatus for making same
US4523613A
(en)
*
1980-07-01
1985-06-18
Hancor, Inc.
Multi-layered corrugated conduit with «black-eye» like apertures
JPS5844583U
(en)
*
1981-09-18
1983-03-25
金尾 史朗
Synthetic resin corrugated double pipe
US4500284A
(en)
*
1983-09-16
1985-02-19
Lupke Manfred Arno Alfred
Forming single wall bells in double wall pipe
JPS60136689A
(en)
*
1983-12-24
1985-07-20
鳥居化成株式会社
Multiple pipe and manufacture thereof
US4846660A
(en)
*
1984-07-18
1989-07-11
Contech Construction Products Inc.
Apparatus for producing double wall pipe
US5124109A
(en)
*
1984-07-18
1992-06-23
Contech Construction Products Inc.
Method for producing a double wall pipe
JPS6199788A
(en)
*
1984-10-22
1986-05-17
金尾 史朗
Pressure-resistant spiral pipe for underground burying
JPS61293821A
(en)
*
1985-06-21
1986-12-24
Takiron Co Ltd
Molding of sleeve on corrugated pipe
NL8502327A
(en)
*
1985-08-23
1987-03-16
Wavin Bv
PLASTIC TUBE COMPRISING AN OUTDOOR HOUSING WITH RIDGES AND SMOOTH INTERIOR WALL AND METHOD FOR REPAIRING RESP. IMPROVE A SEWAGE TUBE.
US5060696A
(en)
*
1985-08-23
1991-10-29
Wavin, Bv
Plastic pipe comprising an outer corrugated pipe and a smooth inner wall
JPS61215883A
(en)
*
1985-10-17
1986-09-25
金尾 史朗
Corrugated double pipe made of synthetic resin
DE3603481A1
(en)
*
1986-02-05
1987-08-06
Wilhelm Hegler
PLASTIC CORRUGATED TUBE WITH MOLDED CONNECTOR
US4759389A
(en)
*
1986-12-04
1988-07-26
Kim Woo Suck
Synthetic resin pipe for underground installation
JPS63115685U
(en)
*
1987-01-21
1988-07-26
AU596339B2
(en)
*
1987-03-06
1990-04-26
Tonen Sekiyukagaku K.K.
Plastic pipe and method and apparatus for manufacturing same
DE3744510A1
(en)
*
1987-12-30
1989-07-13
Wilhelm Hegler
PIPE CONNECTION ELEMENT
JPH02179213A
(en)
*
1988-12-27
1990-07-12
Shiro Kanao
Pressure-proof spiral corrugated pipe
DK0385465T4
(en)
*
1989-03-03
1999-12-13
Pipelife Rohrsysteme Gmbh
Process for making a plastic sewer pipe
DE3906752C2
(en)
*
1989-03-03
1997-09-04
Pipelife Rohrsysteme Gmbh
Line pipe made of plastic, in particular for waste water
DE3939052C2
(en)
*
1989-11-25
2003-11-06
Pipelife Rohrsysteme Gmbh
Method for producing a plastic conduit which can be connected to a same or another pipe by means of socket connections
DE3924791A1
(en)
*
1989-07-27
1991-01-31
Rainer Isolierrohr Drossbach
DOUBLE WALL PIPE AND METHOD FOR THE PRODUCTION THEREOF
JP3219407B2
(en)
1990-11-26
2001-10-15
エクセル株式会社
Multilayer plastic tube and method of manufacturing the same
DE4210482A1
(en)
*
1992-03-31
1993-10-07
Wilhelm Hegler
Method and device for the continuous production of a composite pipe with a pipe socket
US5401459A
(en)
*
1992-10-05
1995-03-28
Infiltrator Systems, Inc.
Gas-assisted injection molding of hollow ribbed article
US5489201A
(en)
*
1993-04-15
1996-02-06
Cullom Machine Tool & Die, Inc.
Plastic tile corrugator and mold blocks
US5525289A
(en)
*
1995-01-30
1996-06-11
Lupke; Manfred A. A.
Method and apparatus for cooling hollow molded product
ATE196351T1
(en)
*
1995-04-03
2000-09-15
Uponor Innovation Ab
WAVE TUBE AND METHOD FOR PRODUCING IT
US6461078B1
(en)
*
1995-09-11
2002-10-08
David W. Presby
Plastic sewage pipe
US5720575A
(en)
*
1995-11-20
1998-02-24
Henrie; James O.
Water control and diversion headgate and method of manufacture
US5888024A
(en)
*
1997-04-04
1999-03-30
Big «O» Inc.
Marine dock and flotation tank
US6206050B1
(en)
1999-03-31
2001-03-27
Certainteed Corporation
Hose used to install loose fill insulation
US6648022B2
(en)
2001-09-21
2003-11-18
Certainteed Corporation
Loose-fill insulation dispensing apparatus including spiked conduit liner
AU2002347114A1
(en)
2001-12-21
2003-07-09
Geberit Technik Ag
Plastic pipe, piping comprising a pipe and a method for producing a pipe
EP1458548A1
(en)
*
2001-12-21
2004-09-22
Rubbermaid Incorporated
Apparatus and method for forming discrete hollow parts, and manufactured product
JP2003211522A
(en)
*
2002-01-23
2003-07-29
Denki Kagaku Kogyo Kk
Method for manufacturing double-wall corrugated pipe
JP3878026B2
(en)
*
2002-02-14
2007-02-07
電気化学工業株式会社
Manufacturing method of double wall corrugated pipe
US6817632B1
(en)
2002-09-13
2004-11-16
Fleetguard, Inc.
Flex tube joint with torsion relief
DE20306407U1
(en)
*
2003-04-24
2004-08-26
Drossbach Gmbh & Co Kg
Double wall corrugated pipe
JP4120476B2
(en)
*
2003-05-27
2008-07-16
宇部興産株式会社
Corrugated tube
US8733405B2
(en)
*
2005-03-14
2014-05-27
Advanced Drainage Systems, Inc.
Corrugated pipe with outer layer
DE202005007835U1
(en)
*
2005-05-19
2005-07-21
Zehnder Verkaufs- Und Verwaltungs-Ag
Ventilation pipe for building has accordion pleated outer wall and connected inner wall of rectangular or oval section
US7284573B2
(en)
2005-05-24
2007-10-23
Certainteed Corporation
Hose for installing loose fill insulation
US7156128B1
(en)
*
2005-06-21
2007-01-02
Kanaflex Corporation
Synthetic resin pipe
EP1867460A3
(en)
*
2006-06-16
2009-04-08
Wavin B.V.
Corrugated plastic pipe production
DE102006048512B4
(en)
*
2006-10-13
2014-03-06
Ralph Peter Hegler
Apparatus for producing composite pipes
DE102007049653A1
(en)
*
2007-10-12
2009-04-16
Unicor Gmbh
Apparatus for producing thermoplastic corrugated pipes
DE102008007226A1
(en)
*
2008-02-01
2009-08-06
Fränkische Rohrwerke Gebr. Kirchner Gmbh & Co. Kg
Composite pipe for use as drain pipe, energy pile or earth collector, comprises inner pipe with constant diameter and outer pipe, which is formed as corrugated pipe with helical wave crest and wave trough running around inner pipe
US8550807B2
(en)
*
2008-05-28
2013-10-08
Advanced Drainage Systems, Inc.
In-mold punch apparatus and methods
DE102008027102B4
(en)
*
2008-06-06
2011-11-17
Unicor Gmbh
Double-wall corrugated pipe and mold jaws for a device for producing such a double-walled corrugated pipe
US20110011613A1
(en)
*
2009-07-20
2011-01-20
Wpfy, Inc.
Treated electrical conduit
WO2011146470A2
(en)
2010-05-17
2011-11-24
Presby Patent Trust
Apparatus and method for processing liquid waste
WO2013056055A2
(en)
2011-10-14
2013-04-18
Presby Patent Trust
Liquid waste treatment apparatus
CA2900578C
(en)
*
2013-08-12
2017-11-07
Prinsco, Inc.
Coilable dual wall corrugated pipe and related method
CN104315267A
(en)
*
2014-08-26
2015-01-28
张琪
Dual-wall corrugated pipe with air pores
CN104315327A
(en)
*
2014-08-26
2015-01-28
卢满松
Dual-wall corrugated pipe with spring
CN108091433B
(en)
*
2017-12-12
2021-05-25
杭州电缆股份有限公司
Processing method of high-voltage corrugated metal sleeve low-eccentricity polyethylene outer sheath power cable
Family Cites Families (21)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2898941A
(en)
*
1956-10-10
1959-08-11
Davol Rubber Co
Inhaler tube
US3330303A
(en)
*
1964-06-15
1967-07-11
Continental Oil Co
Composite tubing structure
US3461531A
(en)
*
1967-03-09
1969-08-19
William J De Gain
Method of making a tubular product
FR1527170A
(en)
*
1967-04-20
1968-05-31
Moulinex Sa
Flexible tube
DE2008455A1
(en)
*
1970-02-24
1971-09-16
Hamburger Flugzeugbau Gmbh
Insulation for devices, components, pipes, lines and the like
DE2061027C3
(en)
*
1970-12-11
1982-03-04
Wilhelm 8730 Bad Kissingen Hegler
Device for applying a transverse profile to a pipe made of thermoplastic material
DE2119290B2
(en)
*
1971-04-21
1976-02-12
Langlotz, Helga, 6420 Lauterbach
METHOD FOR MANUFACTURING LARGER HOLLOW BODIES FROM ORGANIC PLASTIC GLASS
US3753352A
(en)
*
1971-05-21
1973-08-21
Phillips Petroleum Co
Perforate conduit
US3743457A
(en)
*
1971-07-13
1973-07-03
Acme Hamilton Mfg Corp
Stock flow control means for extruders and the like
US3743456A
(en)
*
1971-08-20
1973-07-03
Acme Hamilton Mfg Corp
Adjustable die heads for extruders and the like
NL7114597A
(en)
*
1971-10-22
1973-04-25
GB1380762A
(en)
*
1971-11-25
1975-01-15
Kirchner F
Protective sheath for flexible shafts
US3864446A
(en)
*
1972-06-12
1975-02-04
Plastic Tubing
Method of converting corrugated pipe molding machine
US3861152A
(en)
*
1972-06-12
1975-01-21
Ernest J Maroschak
Corrugated drainage pipe with staggered arrangement of plateau recesses
US3843758A
(en)
*
1972-07-13
1974-10-22
Plastic Tubing
Method for making and slitting plastic corrugated tubes
US3994646A
(en)
*
1974-01-25
1976-11-30
Frankische Isolierrohr-Und Metallwaren Werke Gebr. Kirchner
Apparatus for producing double-walled tubes of plastic material
DE2413877C3
(en)
*
1974-03-22
1979-02-01
Hegler, Wilhelm, 8730 Bad Kissingen
Extrusion head for continuously sheathing a pipe or cable
FR70398E
(en)
*
1974-03-22
1959-04-06
Electronique & Physique
Improvements in television and cinematography cameras
FR69963E
(en)
*
1974-03-22
1959-01-30
Onera (Off Nat Aerospatiale)
Apparatus for counting records
US4037626A
(en)
*
1975-09-15
1977-07-26
Standard Oil Company (Indiana)
High strength composite pipe structure having leakproof joints
US4010298A
(en)
*
1975-12-03
1977-03-01
Angle William M
Underground irrigation devices and methods of making and using the same
1976
1976-08-24
DE
DE2637995A
patent/DE2637995C2/en
not_active
Expired
1977
1977-06-24
GR
GR53791A
patent/GR63991B/en
unknown
1977-06-29
AT
AT0463977A
patent/AT366315B/en
not_active
IP Right Cessation
1977-07-04
CS
CS774429A
patent/CS196373B2/en
unknown
1977-07-04
NL
NL7707369A
patent/NL7707369A/en
not_active
Application Discontinuation
1977-07-05
IN
IN1011/CAL/77A
patent/IN148290B/en
unknown
1977-07-11
NZ
NZ184598A
patent/NZ184598A/en
unknown
1977-07-14
GB
GB29649/77A
patent/GB1525450A/en
not_active
Expired
1977-07-14
CH
CH872777A
patent/CH622984A5/de
not_active
IP Right Cessation
1977-07-16
ES
ES460822A
patent/ES460822A1/en
not_active
Expired
1977-07-19
NO
NO772572A
patent/NO772572L/en
unknown
1977-07-25
AU
AU27269/77A
patent/AU506193B2/en
not_active
Expired
1977-08-01
FI
FI772332A
patent/FI64074C/en
not_active
IP Right Cessation
1977-08-02
IT
IT83627/77A
patent/IT1117833B/en
active
1977-08-10
SU
SU772512604A
patent/SU708992A3/en
active
1977-08-11
US
US05/823,778
patent/US4145387A/en
not_active
Expired – Lifetime
1977-08-16
CA
CA284,771A
patent/CA1061726A/en
not_active
Expired
1977-08-18
TR
TR19812A
patent/TR19812A/en
unknown
1977-08-22
SE
SE7709427A
patent/SE422760B/en
not_active
IP Right Cessation
1977-08-22
PL
PL1977200414A
patent/PL110500B1/en
unknown
1977-08-22
DD
DD7700200676A
patent/DD132728A5/en
unknown
1977-08-22
HU
HU77HE751A
patent/HU175927B/en
unknown
1977-08-22
YU
YU02014/77A
patent/YU201477A/en
unknown
1977-08-23
JP
JP52101013A
patent/JPS6028656B2/en
not_active
Expired
1977-08-23
BR
BR7705605A
patent/BR7705605A/en
unknown
1977-08-23
BE
BE180373A
patent/BE858036A/en
not_active
IP Right Cessation
1977-08-24
DK
DK375477A
patent/DK375477A/en
not_active
Application Discontinuation
1977-08-24
FR
FR7725872A
patent/FR2362715A1/en
active
Granted
1980
1980-06-02
US
US06/155,899
patent/US4303104A/en
not_active
Expired – Lifetime
Cited By (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2259045A
(en)
*
1991-08-30
1993-03-03
B & H Ltd
Double-walled tubular members and their manufacture
GB2300683A
(en)
*
1995-05-06
1996-11-13
Uponor Ltd
Flexible plastics pipe
GB2300684A
(en)
*
1995-05-06
1996-11-13
Uponor Ltd
Axially flexible plastics pipe, e.g. for lining a pipeline
GB2300684B
(en)
*
1995-05-06
1999-10-20
Uponor Ltd
Improvements in or relating to flexible pipes
GB2300683B
(en)
*
1995-05-06
1999-10-20
Uponor Ltd
Improvements in or relating to flexible pipes
US9309999B2
(en)
2011-03-29
2016-04-12
Norma Germany Gmbh
Directional fluid line
Also Published As
Publication number
Publication date
PL200414A1
(en)
1978-04-24
NZ184598A
(en)
1979-11-01
JPS6028656B2
(en)
1985-07-05
FI772332A
(en)
1978-02-25
CA1061726A
(en)
1979-09-04
AU2726977A
(en)
1979-02-01
FR2362715A1
(en)
1978-03-24
BE858036A
(en)
1977-12-16
DE2637995C2
(en)
1983-05-26
CS196373B2
(en)
1980-03-31
JPS5326869A
(en)
1978-03-13
ES460822A1
(en)
1978-04-16
IT1117833B
(en)
1986-02-24
FI64074B
(en)
1983-06-30
SE7709427L
(en)
1978-02-25
FR2362715B1
(en)
1981-12-31
YU201477A
(en)
1982-08-31
HU175927B
(en)
1980-11-28
NL7707369A
(en)
1978-02-28
DE2637995A1
(en)
1978-03-02
IN148290B
(en)
1981-01-03
US4303104A
(en)
1981-12-01
DK375477A
(en)
1978-02-25
DD132728A5
(en)
1978-10-25
FI64074C
(en)
1983-10-10
PL110500B1
(en)
1980-07-31
AT366315B
(en)
1982-04-13
US4145387A
(en)
1979-03-20
SU708992A3
(en)
1980-01-05
TR19812A
(en)
1980-01-03
CH622984A5
(en)
1981-05-15
GR63991B
(en)
1980-01-18
NO772572L
(en)
1978-02-27
SE422760B
(en)
1982-03-29
BR7705605A
(en)
1978-05-30
AU506193B2
(en)
1979-12-13
ATA463977A
(en)
1981-08-15
Similar Documents
Publication
Publication Date
Title
GB1525450A
(en)
1978-09-20
Double-walled tubes
AU2113083A
(en)
1984-06-07
Method and apparatus for forming a double walled thermoplastic tube
IE43190L
(en)
1977-04-03
Plastic pipe
CA1024311A
(en)
1978-01-17
Producing double-walled plastic tubes with corrugated outer wall
CA2043540A1
(en)
1991-12-01
Continuous process for the preparation of thermoplastic honeycomb
PT66611B
(en)
1978-10-25
A joint for thermoplastic multi-walled pipes and a processfor producing the same
JPS5542841A
(en)
1980-03-26
Manufacture of polyolefin containing inorganic filler
BE865969A
(en)
1978-07-31
CORROSION INHIBITOR MIXTURE, PIPE INSULATION HOSE WITH THE SAME, AND PROCESS FOR ITS MANUFACTURING
GB1284957A
(en)
1972-08-09
Thermally insulated pipe and method of manufacturing the same
IE39722B1
(en)
1978-12-20
A method of perforating corrugated plastics tube
FR2335329A1
(en)
1977-07-15
Double-wall plastics pipes – with one smooth outer and one spirally corrugated wall, for drip irrigation in arid regions
BE873710A
(en)
1979-05-16
DOUBLE SEALED FITTING FOR PLASTIC TUBE FOR GAS DISTRIBUTION
GB1228168A
(en)
1971-04-15
NZ185249A
(en)
1980-10-24
Forming oriented thermoplastics polymeric pipe from two or more coaxial tubular blanks
ES473770A1
(en)
1979-04-01
Process of forming hollow articles of thermo-plastics materials
DE3378965D1
(en)
1989-02-23
Method for the manufacture of a package for fluid materials
JPS57195533A
(en)
1982-12-01
Manufacture of long-sized corrugated tube
JPS5593205A
(en)
1980-07-15
Manufacturing method of oil filled electrical apparatus casing
Drossbach
1992
Method for Producing a Double Wall Pipe
JPH0431495B2
(en)
1992-05-26
SU737229A1
(en)
1980-05-30
Mould for making foam plastic articles
EP0601341A3
(en)
1995-04-26
Wall for fluid-tight packings, made of cardboard coated with heat sealable plastic and method for its production.
JPS5563391A
(en)
1980-05-13
Manufacturing method of heat exchanger
JPS5446915A
(en)
1979-04-13
Device for melt blow spinning
JPS5561432A
(en)
1980-05-09
Manufacturing method for thermal insulation hose
Legal Events
Date
Code
Title
Description
1979-01-10
PS
Patent sealed [section 19, patents act 1949]
1985-03-06
PCNP
Patent ceased through non-payment of renewal fee
