GB1281583A - Improvements in or relating to electric insulators - Google Patents

Improvements in or relating to electric insulators

Info

Publication number
GB1281583A
GB1281583A GB3347769A GB3347769A GB1281583A GB 1281583 A GB1281583 A GB 1281583A GB 3347769 A GB3347769 A GB 3347769A GB 3347769 A GB3347769 A GB 3347769A GB 1281583 A GB1281583 A GB 1281583A
Authority
GB
United Kingdom
Prior art keywords
sleeve
core
resin
moulded
mould
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.)
Expired
Application number
GB3347769A
Inventor
Edgardo Rebosio
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Priority to GB3347769A priority Critical patent/GB1281583A/en
Publication of GB1281583A publication Critical patent/GB1281583A/en
Expired legal-status Critical Current

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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • B29C33/505—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible cores or mandrels, e.g. inflatable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/52—Insulators or insulating bodies characterised by their form having cleaning devices
    • H01B17/525—Self-cleaning, e.g. by shape or disposition of screens
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/442—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with mechanical ejector or drive means therefor
    • B29C33/444—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with mechanical ejector or drive means therefor for stripping articles from a mould core, e.g. using stripper plates
    • B29C33/446—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with mechanical ejector or drive means therefor for stripping articles from a mould core, e.g. using stripper plates and using a rotating movement to unscrew articles
    • 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
    • B29C45/2618—Moulds having screw-threaded mould walls
    • B29C45/262—Moulds having screw-threaded mould walls provided with unscrewing drive means
    • 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
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3412—Insulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insulating Bodies (AREA)

Abstract

1281583 Moulding polymeric insulators BRITISH INSULATED CALLENDER'S CABLES Ltd 2 July 1969 33477/69 Heading B5A [Also in Division H2] A polymeric electric insulator sleeve (see Division H2) comprises sintered particles of polytetrafluoroethylene, or neoprene, butyl or silicone rubber, which rubbers may be filled with hydrated alumina, or mica and hydrated silica fillers, moulded by compression of the particles by a gas or liquid inflated core 6 within a mould 4, the interior cavity wall whereof comprises at least one helical groove 4a, or a plurality of spaced annular grooves. In the Fig. 2 embodiment the inflatable core 6 is supported upon a mandrel 5, similarly helically configured to the mould interior cavity wall and through passages 5a, 5b whereof the inflating fluid is admitted, the core 6, mandrel 5, and mould 4 being removed from the moulded sleeve by unscrewing. After etching the interior of the sintered sleeve with sodium - naphthalene - tetra - hydro - furan, a preformed resin rod 2, which may be reinforced with glass in other inorganic fibre, is located therewithin and bonded thereto by liquid hardenable resin introduced by vacuum. In the Fig. 5 embodiment, the sleeve 10 is moulded with spaced circumferential ribs 11 using an inflatable core which is either removed after moulding, or may remain in position to be volatilized during the sintering. The interior of the sintered sleeve is filled under vacuum with hardenable resin 15 in which metal terminals 8 are embedded. It is stated that the preformed resin core bonded within the sleeve may be tubular, or the sleeve may include an elongated metal conductor bonded therein by resin.
GB3347769A 1969-07-02 1969-07-02 Improvements in or relating to electric insulators Expired GB1281583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3347769A GB1281583A (en) 1969-07-02 1969-07-02 Improvements in or relating to electric insulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3347769A GB1281583A (en) 1969-07-02 1969-07-02 Improvements in or relating to electric insulators

Publications (1)

Publication Number Publication Date
GB1281583A true GB1281583A (en) 1972-07-12

Family

ID=10353483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3347769A Expired GB1281583A (en) 1969-07-02 1969-07-02 Improvements in or relating to electric insulators

Country Status (1)

Country Link
GB (1) GB1281583A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309959A1 (en) * 1975-04-29 1976-11-26 Rosenthal Technik Ag COMPOSITE SCREEN IN THE FORM OF ONE OR MORE ELEMENTS AND ITS FIXING PROCESS ON AN INSULATOR BODY CONSTITUTED BY GLASS
FR2392477A1 (en) * 1977-05-24 1978-12-22 Fidenza Vetraria Spa ELECTRIC GLASS INSULATOR COATED WITH PLASTIC MATERIAL
CN109130052A (en) * 2018-09-20 2019-01-04 沈阳华德海泰电器有限公司 High-Voltage Electrical Appliances silica gel sleeve pipe workpiece removing method and particular manufacturing craft from compacting tool set

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309959A1 (en) * 1975-04-29 1976-11-26 Rosenthal Technik Ag COMPOSITE SCREEN IN THE FORM OF ONE OR MORE ELEMENTS AND ITS FIXING PROCESS ON AN INSULATOR BODY CONSTITUTED BY GLASS
FR2392477A1 (en) * 1977-05-24 1978-12-22 Fidenza Vetraria Spa ELECTRIC GLASS INSULATOR COATED WITH PLASTIC MATERIAL
CN109130052A (en) * 2018-09-20 2019-01-04 沈阳华德海泰电器有限公司 High-Voltage Electrical Appliances silica gel sleeve pipe workpiece removing method and particular manufacturing craft from compacting tool set

Similar Documents

Publication Publication Date Title
EP1107409B1 (en) Switchgear and method of manufacturing thereof
US3870843A (en) Electrical appliance with housing of plastic foam material
EP0873838A3 (en) A process and an apparatus for producing insulators
US3001005A (en) Terminal bushings
US3134164A (en) Manufacture of suspension-type longbody electrical insulators
RU2007120391A (en) ELECTRIC PASS-INSULATOR AND METHOD FOR ITS MANUFACTURE
US2893061A (en) Method for encapsulating electrical equipment
GB1281583A (en) Improvements in or relating to electric insulators
BR0215917A (en) Process and apparatus for manufacturing an elastomeric glove for a cable joint
US3737556A (en) Cable termination apparatus with rigid stress relief assembly and conductive seal
GB1471132A (en) Insulators
GB1339409A (en) Electrolytic capacitor with seal
US2740872A (en) Fluid-tight electric switches and methods of making the same
US3715449A (en) Fluid filled high voltage cable terminal apparatus
IE37396B1 (en) A dielectric sleeve for electric cable accessories
CN109509675B (en) Insulator structure for protecting vacuum tube
GB921902A (en) Method and apparatus for providing moulded joints or repairs
US20190259554A1 (en) High-Voltage Switching Device and Switching System Comprising a High-Voltage Switching Device and Method for Manufacturing a High-Voltage Switching Device
JP2015208142A (en) Tank type vacuum breaker
KR950004224Y1 (en) Press mould for the manufacturing of insulating unit of electric cable
FR2293777A1 (en) Insulator for overhead electric cables - which is lightweight, impact-resistant and weather-resistance
GB953575A (en) Supporting column for electrical equipment
GB1095025A (en) High tension composite insulators
JPS54157287A (en) Insulatorsigma electric field easing structure
GB1126411A (en) Improvements in electric insulators

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees