GB2567167B - Plastic moulded man hole cover and method - Google Patents

Plastic moulded man hole cover and method Download PDF

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Publication number
GB2567167B
GB2567167B GB1716184.5A GB201716184A GB2567167B GB 2567167 B GB2567167 B GB 2567167B GB 201716184 A GB201716184 A GB 201716184A GB 2567167 B GB2567167 B GB 2567167B
Authority
GB
United Kingdom
Prior art keywords
hole cover
plastic moulded
man hole
man
moulded
Prior art date
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.)
Active
Application number
GB1716184.5A
Other versions
GB2567167A (en
GB201716184D0 (en
Inventor
Francis Clark Ronald
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.)
CLARK DRAIN Ltd
Original Assignee
CLARK DRAIN Ltd
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 CLARK DRAIN Ltd filed Critical CLARK DRAIN Ltd
Priority to GB1716184.5A priority Critical patent/GB2567167B/en
Publication of GB201716184D0 publication Critical patent/GB201716184D0/en
Publication of GB2567167A publication Critical patent/GB2567167A/en
Application granted granted Critical
Publication of GB2567167B publication Critical patent/GB2567167B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1472—Cover entirely made of synthetic material
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • B29C2045/0027—Gate or gate mark locations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/608—Honeycomb structures

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
GB1716184.5A 2017-10-04 2017-10-04 Plastic moulded man hole cover and method Active GB2567167B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1716184.5A GB2567167B (en) 2017-10-04 2017-10-04 Plastic moulded man hole cover and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1716184.5A GB2567167B (en) 2017-10-04 2017-10-04 Plastic moulded man hole cover and method

Publications (3)

Publication Number Publication Date
GB201716184D0 GB201716184D0 (en) 2017-11-15
GB2567167A GB2567167A (en) 2019-04-10
GB2567167B true GB2567167B (en) 2021-12-08

Family

ID=60270502

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1716184.5A Active GB2567167B (en) 2017-10-04 2017-10-04 Plastic moulded man hole cover and method

Country Status (1)

Country Link
GB (1) GB2567167B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3118128B1 (en) * 2020-12-17 2022-12-16 Valeo Vision Mold for manufacturing a mask of a light module of a vehicle comprising a matrix of pixels

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4170047A (en) * 1978-06-30 1979-10-09 Corsette Douglas Frank Vaned anti-vortex pool drain cover
JPH1181361A (en) * 1997-09-05 1999-03-26 Nippon Zeon Co Ltd Manhole cover and manufacture thereof
JP2004027562A (en) * 2002-06-24 2004-01-29 Daicel Polymer Ltd Thermoplastic resin cover body for underground structure, underground structure having this cover body and method of manufacturing its cover body
JP2013130052A (en) * 2011-11-21 2013-07-04 Mikuni Plastics Co Ltd Cover body
JP2016186194A (en) * 2015-03-27 2016-10-27 群馬県 Resin manhole cover

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4170047A (en) * 1978-06-30 1979-10-09 Corsette Douglas Frank Vaned anti-vortex pool drain cover
JPH1181361A (en) * 1997-09-05 1999-03-26 Nippon Zeon Co Ltd Manhole cover and manufacture thereof
JP2004027562A (en) * 2002-06-24 2004-01-29 Daicel Polymer Ltd Thermoplastic resin cover body for underground structure, underground structure having this cover body and method of manufacturing its cover body
JP2013130052A (en) * 2011-11-21 2013-07-04 Mikuni Plastics Co Ltd Cover body
JP2016186194A (en) * 2015-03-27 2016-10-27 群馬県 Resin manhole cover

Also Published As

Publication number Publication date
GB2567167A (en) 2019-04-10
GB201716184D0 (en) 2017-11-15

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20220217 AND 20220223