GB804262A - Improvements in and relating to flexible diaphragms - Google Patents

Improvements in and relating to flexible diaphragms

Info

Publication number
GB804262A
GB804262A GB2515955A GB2515955A GB804262A GB 804262 A GB804262 A GB 804262A GB 2515955 A GB2515955 A GB 2515955A GB 2515955 A GB2515955 A GB 2515955A GB 804262 A GB804262 A GB 804262A
Authority
GB
United Kingdom
Prior art keywords
mould
rubber
tube
stockinette
over
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
GB2515955A
Inventor
Stanley Thomas Albert Richards
Harry Balshaw Caldwell
John Grieve
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.)
Normalair Ltd
Original Assignee
Normalair 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 Normalair Ltd filed Critical Normalair Ltd
Priority to GB2515955A priority Critical patent/GB804262A/en
Publication of GB804262A publication Critical patent/GB804262A/en
Expired legal-status Critical Current

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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/02—Diaphragms
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B29C70/467—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements during mould closing
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
    • 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
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • 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
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • 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
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • 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
    • B29L2031/755—Membranes, diaphragms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • General Engineering & Computer Science (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

804,262. Moulding reinforced piston packings &c. NORMALAIR Ltd. Aug. 31, 1956 [Sept. 1, 1955], No. 25159/55. Class 87(2). [Also in Groups VIII and XXVI] A flexible diaphragm for connection between two relatively movable elements, e.g. a piston working within a cylinder, is made of silicone rubber or other rubber-like materials integrated with a textile or metal material formed with interlacing loops and capable of stretch in all directions. The material may be a knitted or stockinette fabric having non-run or non- laddering characteristics or one capable of stretch less in the longitudinal direction than in the lateral ; the material may also have longitudinal reinforcing strands. In the arrangement shown in Fig. 1, a length 1 of material with its margins 4, 5 turned inwards and outwards respectively, is arranged over a frusto-conical inner mould ; discs 7, 8 are secured to the two margins, and previouslyapplied rubber paste on the material is then compressed on to the material by the application of an outer mould member. The rubber is then pre-cured at 130‹C. for 2-5 minutes in the mould and for 2 hours at 150‹C. after removal. Longitudinal reinforcing threads or strands of nylon, glass, or other fibres, may be stretched over the conical portion of the diaphragm; these threads may be crimped. Metal reinforcing rings, may be secured over the margins 4 and 5 the disc 7 being omitted. In a further alternative form, a seamless tube of stockinette is positioned around a male mould and longitudinal tension applied during moulding. A still further form consists of a tube of stockinette which is rolled back at one or both ends, if desired over a ring made of yarn, to form beads. In the arrangement shown in Fig. 5 a stockinette tube 12 is pulled over an expandable tube 13 and inserted in a tubular mould 14 into which the rubber like compound is introduced through a duct 18. End members 15 are applied to close the tube and steam or air under pressure is admitted through a duct 17 to expand the tube diametrically and superheated steam is then admitted to pre-cure the rubber. After removal from the mould the temperature is raised to 150‹C. for 2 hours. A diaphragm formed with a U-bend 10, Fig. 3, may also be formed between two mould members 2 and 9.
GB2515955A 1955-09-01 1955-09-01 Improvements in and relating to flexible diaphragms Expired GB804262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2515955A GB804262A (en) 1955-09-01 1955-09-01 Improvements in and relating to flexible diaphragms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2515955A GB804262A (en) 1955-09-01 1955-09-01 Improvements in and relating to flexible diaphragms

Publications (1)

Publication Number Publication Date
GB804262A true GB804262A (en) 1958-11-12

Family

ID=10223181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2515955A Expired GB804262A (en) 1955-09-01 1955-09-01 Improvements in and relating to flexible diaphragms

Country Status (1)

Country Link
GB (1) GB804262A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169845A (en) * 1985-01-23 1986-07-23 Oberlausitzer Stahl Fahrzeug Injection moulding process for composite materials using a textile reinforcing element
EP2594390A1 (en) * 2011-11-17 2013-05-22 The Boeing Company Expandable surface breather and method
CN110641028A (en) * 2019-09-25 2020-01-03 大同新成新材料股份有限公司 Turnover type hot press for processing and producing carbon felt and using method thereof
CN113318279A (en) * 2018-04-19 2021-08-31 易浦润（上海）生物技术有限公司 Elastic film

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169845A (en) * 1985-01-23 1986-07-23 Oberlausitzer Stahl Fahrzeug Injection moulding process for composite materials using a textile reinforcing element
FR2576250A1 (en) * 1985-01-23 1986-07-25 Oberlausitzer Stahl Fahrzeug REINFORCING ELEMENT FOR COMPOSITE MATERIALS SUCH AS CAMPING CARAVAN DOORS, TANKS OR OTHER
EP2594390A1 (en) * 2011-11-17 2013-05-22 The Boeing Company Expandable surface breather and method
US9044904B2 (en) 2011-11-17 2015-06-02 The Boeing Company Expandable surface breather and method
CN113318279A (en) * 2018-04-19 2021-08-31 易浦润（上海）生物技术有限公司 Elastic film
CN110641028A (en) * 2019-09-25 2020-01-03 大同新成新材料股份有限公司 Turnover type hot press for processing and producing carbon felt and using method thereof

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