US3553413A - Device for heating dielectric materials coating an electricity conducting element by means of hyperfrequence waves - Google Patents

Device for heating dielectric materials coating an electricity conducting element by means of hyperfrequence waves Download PDF

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Publication number
US3553413A
US3553413A US810992A US3553413DA US3553413A US 3553413 A US3553413 A US 3553413A US 810992 A US810992 A US 810992A US 3553413D A US3553413D A US 3553413DA US 3553413 A US3553413 A US 3553413A
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waves
tubes
tubular
electric field
coaxial
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US810992A
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Joel Henri Auguste Soulier
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H05B6/788—Arrangements for continuous movement of material wherein an elongated material is moved by applying a mechanical tension to it
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/06—Rod-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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0855—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using microwave
    • 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
    • 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
    • B29L2031/3462—Cables

Definitions

  • PATENTEB JAN 5 SHEET 1 OF 2 PATENTEBJAN 5197: 35533113 SHEET 2 [IF 2 F i a6.
  • the coating must be heated to be vulcanized in the case of elastomers, or be completely reticulated in the case of thermoplastic resins to which reticulating media, such as peroxides, are added.
  • Machines making the depositing of dielectric coatings possible on conductor cables or metal shields other than electric conductors are capable of operating continuously at high speed. These machines are not made the best use of, or else, it is necessary that the pressure heaters with which they cooperate must be extremely long, which involves considerable investments.
  • the present invention creates anew device which enables continuous and very high speed treatment of metal elements, particularly of electric cables, coated with dielectric material that is to be subjected to heat treatment.
  • the device comprises a tubular conducting casing closed at both ends by conducting members, at least two aligned tubular conducting cores, separated from each other by a space, being fixedly arranged inside said casing and coaxially with it for making a coaxial conductor, the dielectric material coating a conductor being made to circulate inside said two tubular cores for being subjected to an electric field created by hyperfrequency waves produced from a generator connected to said coaxial conductor, which form the casing and cores, by an electronic adapter assembly, so that the electric field produced between the conducting casing and said cores is applied on the dielectric in the space separating said cores.
  • FIG. I is a partly diagrammatical elevation section of the device of the invention.
  • FIG. 2 is an electrical diagram of the device of FIG. 1.
  • FIG. 3 is an elevation section similar to FIG. 1, showing an alternative embodiment of the device.
  • the invention relates to a device for vulcanizing elastomers or reticulating particular thermoplastic synthetic resins coating a wire or conductor cable 1, these coating elastomers or resins being designated by 2, the cable 1 is preferably placed in line with the coating device shown in the drawing by the nose of a slubber which has a bore 3 for the passage of a wire or cable 1, admission ducts 4 for the coating 2 in the form of lugs, and a calibration jet 5.
  • the calibration jet 5 can obviously be made in numerous different manners according to whether the coating 2 must have smooth or longitudinally or transversally grooved walls, or whether this coating must be made adherent over the entire surface of the wire or cable 1, or, on the contrary, that this coating be separate from said wire or cable, or that it should only be in mutual contact at certain points, which, if so required, necessitates the jet 5 being provided with shaping fixed or movable dies and that these dies cooperate with mechanisms setting up a pressure or depression inside and/or outside the coating 2. Likewise, the coating 2 must have smooth or longitudinally or transversally grooved walls, or whether this coating must be made adherent over the entire surface of the wire or cable 1, or, on the contrary, that this coating be separate from said wire or cable, or that it should only be in mutual contact at certain points, which, if so required, necessitates the jet 5 being provided with shaping fixed or movable dies and that these dies cooperate with mechanisms setting up a pressure or depression inside and/or outside the coating 2.
  • jet 5 can be placed immediately at the entry to the device of the invention, or on the contrary, be separated from it for a certain distance, which depends on supplementary treatments that may be required to be put into operation.
  • the device of the invention itself is intended to heat or reheat the coating material 2 so as to bring it to a suitable temperature for vulcanizing in the case of elastomers, or for reticulating in the case of thermoplastic resins such as reticualted polyethylenes, that is to say, containing peroxides, for instance.
  • the coating 2 should be raised to a temperature of about C.
  • the device uses a hyperfrequency wave generator designated by 6, which is formed by a magnetron whose antenna 7 is placed in a rectangular section wave guide 8 made of conductive metal, such as brass, copper, aluminum, etc.
  • the wave guide 8 communicates with and is connected to a casing 9 of annular section.
  • the casing 9 contains at least two tubular members or cores l0 and 1] arranged concentrically to said casing so that said casing and said tubular members l0, 11 form a coaxial conductor.
  • the ends of the wave guide 8 p are provided with short circuit buttons 12, 13 and likewise the ends of the casing 9 are provided with short circuit rings 14 and 15.
  • Rings 16 and 17 of material pervious to hyperfrequency waves are slipped on the cores 10, 11 on either side of a coaxial chamber 18 confined between the ends opposite to these cores.
  • the rings 16, 17 are preferably movable axially, and to this end, are connected to operating members 19, which may be metallic for instance, and cover at least part of slots 20 provided in the casing 9.
  • the conductor cable 1 provided with its coating 2 is made to pass inside the tubular cores l0 and 11. It is advantageous that the internal diameter of said tubular cores should be close to the external diameter of the covered cable I, and moreover, it is important that no friction should exist between the coating 2 and the inner wall of the cores 10, 11.
  • sheathing 21 is advantageously provided inside the cores 10, II, this sheathing being made of a material with a low friction coefficient and not affected by hyperfrequency waves and the electric fields arising therefrom, for example also of polytetrafluorethylene.
  • the drawing does not show the device for hauling the cable, but it is obvious that such device can be provided so that the cable can remove continuously and at a steady speed in the device of the invention.
  • the waveguide 8 can be shown in electric equivalence by an RLC circuit, i.e., an inductance-capacityresistance circuit of the same characteristic impedance as the magnetron.
  • the coating part 2 which extends in the coaxial chamber 18 separating the two cores l0, 11, forms a load C,, because this part absorbs the power transmitted by the magnetron 6 in electromagnetic form.
  • the rings 16, 17 which act as an assembly ofcapacitors and self-inductances coupled with the load CAs explained in the foregoing, the rings 16, 17 are movable and consequently act as a variable capacitor-inductance assembly as shown at L,, C, in FIG. 2.
  • the coaxial conductor made by the casing 9 and tubular core 10 forms a kind of transmission line between the RLC circuit and the transformer T.
  • the impedance of the line must thus be adjustable, which is obtained by making at least some of the short circuit buttons l2, 13 or l4, l movable, which consequently act as inductances L and variable capacities C mounted in series in the secondary circuit of the transformer T.
  • the distance separating the cores and 11 can be about 2 cm. for treating a coating of cables of 10 to 60 mm. diameter in a device dispersing a power of about 2 kw whose external casing 9 has a length of between 250 and 500 mm and a diameter of 50 to 80 mm.
  • a 6.5 mm diameter metal cab core cable, coated with synthetic material up to 20.5 mm. can be treated with an oven of the following characteristics:
  • Thickness of the polytetrafluorethylene buttons l6, 17 for adapting the impedance 3 mm., interior guides 10 and 11 of 21 X 26 mm. diameter;
  • Another example can be a 9 mm. diameter metal core cable coated with synthetic material up to 12.5 mm. can be treated with oven having the following characteristics:
  • the device comprises a rectangular wave guide and a coaxial type conductor.
  • the wave guide can be replaced by two coaxial conductor segments 22, 22a and 23, 23a respectively connected to the casing 9 and tubular core 10, the magnetron 6 being, in this case, directly connected to the coaxial conductors 22, 22a, while a short circuit button 13a is provided to enable the electronic adaptation of the device whose other parts remain similar to those described in the foregoing with reference to H6. l.
  • I Device for curing by means of hyperfrequency waves a dielectric material of an insulated wire or cable which is moved continuously, comprising, in combination: a tubular casing made of an electrically conductive material and at least partially closed at bo I fits ends by electrically conductive rings; t at least two aligned tubes made of electrically conductive material which are disposed in a parallel'fashio'n inside or said tubular casing and which are separated by a predetermined space; at least two insulating rings substantially parallel to said electrically conductive rings and being made of a material which is pervious to hyperfrequency waves, said insulatmg rings cooperating with said electrically conductive rings to support said tubes whereby said tubes form a coaxial guide with said tubular casing; and
  • a generator of hyperfrequency waves operatively connected to said coaxial guide for producing an electric field therein, whereby said dielectric material of said insulated wire or cable when moving through said tubes and guided therein is subjected to said electric field only in said predetermined space which separates said tubes.
  • Device including a rectangular wave guide which is connected to said tubular casinggand an antenna operatively connected to said generator and being at least partially disposed within said rectangular waveguide to facilitate transmission of said electric field to said coaxial guide 3.
  • Device wherein the internal surfaces of said aligned tubes are covered with a material which is pervious to said hyperfrequency waves and which has a substantially low coefficient of friction, such as polytetrafluorethylene.
  • Device according to claim 1 including twosections' of coaxial conductors connected to said tubular casingand one of said aligned tubes to facilitate transmission of said electric field to said coaxial guide.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
US810992A 1968-03-29 1969-03-27 Device for heating dielectric materials coating an electricity conducting element by means of hyperfrequence waves Expired - Lifetime US3553413A (en)

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FR146502 1968-03-29

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US (1) US3553413A (enrdf_load_stackoverflow)
BE (1) BE730443A (enrdf_load_stackoverflow)
CH (1) CH508330A (enrdf_load_stackoverflow)
DE (1) DE1915342A1 (enrdf_load_stackoverflow)
FR (1) FR1569046A (enrdf_load_stackoverflow)
GB (1) GB1240903A (enrdf_load_stackoverflow)
HU (1) HU166310B (enrdf_load_stackoverflow)
NL (1) NL6904630A (enrdf_load_stackoverflow)
PL (1) PL72629B1 (enrdf_load_stackoverflow)
SE (1) SE340664B (enrdf_load_stackoverflow)
SU (1) SU466688A3 (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731038A (en) * 1971-02-22 1973-05-01 Patents And Dev Ltd Zero-mode microwave applicator
FR2541626A1 (fr) * 1983-02-25 1984-08-31 Meo Robert Di Procede de fabrication d'un profile moule en particules ou fibres minerales, vegetales ou synthetiques et dispositif pour la mise en oeuvre de ce procede
US4772302A (en) * 1984-12-21 1988-09-20 Northern Telecom Limited Optical waveguide manufacture
US4780585A (en) * 1985-06-28 1988-10-25 Societe Nationale Elf Aquitaine Method and device for the thermal treatment of a conductor element at least partially constituted by a conducting material
EP0290849A3 (en) * 1987-04-27 1989-02-08 Toyo Cloth Co., Ltd. Pultrusion with cure by ultraviolet radiation
US4941905A (en) * 1986-08-29 1990-07-17 American Telephone And Telegraph Company, At&T Technologies, Inc. Methods of soot overcladding an optical preform
US5357088A (en) * 1991-05-09 1994-10-18 Konica Corporation Method for melting a photographic composition gel to a sol using microwave energy
US5536921A (en) * 1994-02-15 1996-07-16 International Business Machines Corporation System for applying microware energy in processing sheet like materials
US5847376A (en) * 1993-05-05 1998-12-08 Ciba Specialty Chemicals Corporation Process and plant for the manufacture of solid castings from an essentially liquid reactive medium, and oven for heating an essentially liquid medium
US5998774A (en) * 1997-03-07 1999-12-07 Industrial Microwave Systems, Inc. Electromagnetic exposure chamber for improved heating
US6265702B1 (en) 1999-04-28 2001-07-24 Industrial Microwave Systems, Inc. Electromagnetic exposure chamber with a focal region
US20090289832A1 (en) * 2006-07-19 2009-11-26 Daniel Evers Radial gap measurement on turbines
US20100181309A1 (en) * 2009-01-16 2010-07-22 Konrad Senn Resonator unit, expansion process and apparatus for heating containers
CN102758271A (zh) * 2012-07-30 2012-10-31 广州赛奥碳纤维技术有限公司 一种规模化生产碳纤维的高温碳化炉
CN102797075A (zh) * 2012-09-06 2012-11-28 广州赛奥碳纤维技术有限公司 连续石墨化超高温管式炉
EP2537966A1 (en) * 2011-06-20 2012-12-26 Mikuro Denshi Co., Ltd. Heating system utilizing microwave

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US4065654A (en) * 1975-12-01 1977-12-27 Chemetron Corporation Microwave oven adjusting (energy distribution) and tuning arrangement
DE2642335C2 (de) * 1976-09-21 1978-12-21 Ingenieurbuero Hermann Purfuerst Kg, 3004 Isernhagen Vorrichtung zum kontinuierlichen dielektrischen Erwärmen mittels Mikrowellenenergie
FR2410932A1 (fr) * 1979-03-16 1979-06-29 Cim Lambda Int Sarl Applicateur de micro-ondes a variation de densite d'energie
FR2458610A1 (fr) * 1979-06-07 1981-01-02 Anvar Procede et dispositif pour le traitement thermique d'elements filiformes
DE2943300A1 (de) * 1979-10-26 1981-05-14 Paul Troester Maschinenfabrik, 3000 Hannover Verfahren zur vernetzung von kabelisolierungen und vorrichtung zur durchfuehrung dieses verfahrens
SE419494B (sv) * 1979-12-21 1981-08-03 Husqvarna Ab Genomstromningsvermare av mikrovagstyp innehallande en cylindrisk mikrovagsapplikator
DE3033012A1 (de) * 1980-09-02 1982-04-01 Paul Troester Maschinenfabrik, 3000 Hannover Vorrichtung fuer die trockene vernetzung von straengen aus elastomeren
WO1989010678A1 (en) * 1988-04-19 1989-11-02 Deakin University Improved microwave treatment apparatus
CN101197201B (zh) * 2007-12-27 2011-01-12 长江电缆有限公司 微波硫化橡套电缆的生产方法
CN104332257B (zh) * 2014-10-29 2016-08-24 江苏俊知技术有限公司 一种耐高温通信电缆绝缘工艺的真空微波干燥方法及其干燥回收再利用处理装置
CN111899949A (zh) * 2020-08-31 2020-11-06 晶锋集团股份有限公司 一种电缆生产线用表面除水装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457385A (en) * 1966-07-07 1969-07-22 Canadian Patents Dev Apparatus for dielectric heating
US3461261A (en) * 1966-10-31 1969-08-12 Du Pont Heating apparatus
US3465114A (en) * 1966-09-19 1969-09-02 Canadian Patents Dev Method and apparatus for dielectric heating

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457385A (en) * 1966-07-07 1969-07-22 Canadian Patents Dev Apparatus for dielectric heating
US3465114A (en) * 1966-09-19 1969-09-02 Canadian Patents Dev Method and apparatus for dielectric heating
US3461261A (en) * 1966-10-31 1969-08-12 Du Pont Heating apparatus

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731038A (en) * 1971-02-22 1973-05-01 Patents And Dev Ltd Zero-mode microwave applicator
FR2541626A1 (fr) * 1983-02-25 1984-08-31 Meo Robert Di Procede de fabrication d'un profile moule en particules ou fibres minerales, vegetales ou synthetiques et dispositif pour la mise en oeuvre de ce procede
EP0118079A1 (fr) * 1983-02-25 1984-09-12 Robert Di Meo Procédé de fabrication d'un profilé moulé en particules ou fibres minérales, végétales ou synthétiques et dispositif pour la mise en oeuvre de ce procédé
US4772302A (en) * 1984-12-21 1988-09-20 Northern Telecom Limited Optical waveguide manufacture
US4780585A (en) * 1985-06-28 1988-10-25 Societe Nationale Elf Aquitaine Method and device for the thermal treatment of a conductor element at least partially constituted by a conducting material
US4941905A (en) * 1986-08-29 1990-07-17 American Telephone And Telegraph Company, At&T Technologies, Inc. Methods of soot overcladding an optical preform
EP0290849A3 (en) * 1987-04-27 1989-02-08 Toyo Cloth Co., Ltd. Pultrusion with cure by ultraviolet radiation
US5357088A (en) * 1991-05-09 1994-10-18 Konica Corporation Method for melting a photographic composition gel to a sol using microwave energy
US5847376A (en) * 1993-05-05 1998-12-08 Ciba Specialty Chemicals Corporation Process and plant for the manufacture of solid castings from an essentially liquid reactive medium, and oven for heating an essentially liquid medium
US5536921A (en) * 1994-02-15 1996-07-16 International Business Machines Corporation System for applying microware energy in processing sheet like materials
US5998774A (en) * 1997-03-07 1999-12-07 Industrial Microwave Systems, Inc. Electromagnetic exposure chamber for improved heating
US6087642A (en) * 1997-03-07 2000-07-11 Industrial Microwave Systems, Inc. Electromagnetic exposure chamber for improved heating
US6265702B1 (en) 1999-04-28 2001-07-24 Industrial Microwave Systems, Inc. Electromagnetic exposure chamber with a focal region
US20090289832A1 (en) * 2006-07-19 2009-11-26 Daniel Evers Radial gap measurement on turbines
US7889119B2 (en) * 2006-07-19 2011-02-15 Siemens Aktiengesellschaft Radial gap measurement on turbines
US20100181309A1 (en) * 2009-01-16 2010-07-22 Konrad Senn Resonator unit, expansion process and apparatus for heating containers
US8664574B2 (en) 2009-01-16 2014-03-04 Krones Ag Resonator unit, expansion process and apparatus for heating containers
EP2537966A1 (en) * 2011-06-20 2012-12-26 Mikuro Denshi Co., Ltd. Heating system utilizing microwave
CN102758271A (zh) * 2012-07-30 2012-10-31 广州赛奥碳纤维技术有限公司 一种规模化生产碳纤维的高温碳化炉
CN102797075A (zh) * 2012-09-06 2012-11-28 广州赛奥碳纤维技术有限公司 连续石墨化超高温管式炉

Also Published As

Publication number Publication date
HU166310B (enrdf_load_stackoverflow) 1975-02-28
CH508330A (fr) 1971-05-31
FR1569046A (enrdf_load_stackoverflow) 1969-05-30
SE340664B (enrdf_load_stackoverflow) 1971-11-29
BE730443A (enrdf_load_stackoverflow) 1969-09-01
GB1240903A (en) 1971-07-28
PL72629B1 (enrdf_load_stackoverflow) 1974-08-30
NL6904630A (enrdf_load_stackoverflow) 1969-10-01
DE1915342A1 (de) 1969-10-09
SU466688A3 (ru) 1975-04-05

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