Heater Type Patents (Class 29/611)
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Patent number: 6392208Abstract: Methods of manufacturing electrical resistance heating elements are provided which include mating a pair of polymeric components around an electrical resistance heating material prior to fusing the polymeric components together, preferably by heat or pressure or both. Methods of stress relieving these polymeric components before, during or after fusing them together, are disclosed. Additionally, thermally conductive, non-electrically conductive additives can be added to improve the service life of the elements. In a further embodiment of this invention, a heating element and method of construction are provided in which first and second polymeric components are joined together with a resistance heating material therebetween. The polymeric components include retention means including a plurality of male connectors located on the first polymeric component, and a plurality of female receiving recesses located on the second polymeric component for mating with the male connectors of the first polymeric component.Type: GrantFiled: August 6, 1999Date of Patent: May 21, 2002Assignee: Watlow Polymer TechnologiesInventor: Theodore Von Arx
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Patent number: 6378205Abstract: A method produces a liquid ejecting head having an ejection outlet for ejecting a liquid, a heat generating element for applying thermal energy to the liquid, a liquid flow path having a first path portion in fluid communication with the ejection outlet and a second path portion disposed below the first path portion and provided with the heat generating element in a bottom surface thereof, a partition wall for partitioning the liquid flow path into the first path portion and second path portion, and a movable member disposed above the heat generating element in the portion wall and arranged as displaceable to a side of the first path portion in accordance with a bubble generated in the liquid by the thermal energy in which upon generation of the bubble the first path portion and the second path portion are in fluid communication with each other and the pressure is directed toward the ejection outlet by the movable member displaced to eject the liquid droplet.Type: GrantFiled: January 7, 1999Date of Patent: April 30, 2002Assignee: Canon Kabushiki KaishaInventors: Aya Yoshihira, Hiroshi Sugitani, Tadayoshi Inamoto, Makiko Kimura, Toshio Kashino, Shuji Koyama, Takeshi Okazaki, Kiyomitsu Kudo, Yoshie Nakata, Toshihiro Mori
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Patent number: 6374482Abstract: A method for manufacturing liquid discharge heads is provided with discharge ports for discharging liquid, liquid flow paths communicated with the discharge ports for supplying liquid to the discharge ports, a substrate having heat generating members for creating bubbles in liquid, and movable members facing the heat generating members, each being arranged in each liquid flow path, having the free end on the discharge port side with a specific gap with the heat generating member. This method comprises the steps of forming the boundary layer used for providing a gap between the movable member and the substrate above the heat generating member on the substrate, of laminating the movable member on the boundary layer so as to position the free end above the heat generating member, at the same time fixing the movable member on the substrate, and of forming the gap between the movable member and the heat generating member by use of the boundary layer.Type: GrantFiled: August 4, 1998Date of Patent: April 23, 2002Assignee: Canon Kabushiki KaishaInventors: Hiroaki Mihara, Masahiko Ogawa, Kazuaki Masuda, Masami Ikeda, Ichiro Saito, Hiroyuki Ishinaga, Toshio Kashino, Shuji Koyama, Tomoyuki Hiroki, Yoshiyuki Imanaka, Teruo Ozaki, Masahiko Kubota
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Publication number: 20020042985Abstract: A thermal bend actuator (6) is provided with upper arms (23, 25, 26) and lower arms (27, 28) which are non planar, so increasing the stiffness of the arms. The arms (23, 25, 26, 27, 28) may be spaced transversely of each other and do not overly each other in plan view, so enabling all arms to be formed by depositing a single layer of arm forming material.Type: ApplicationFiled: August 31, 2001Publication date: April 18, 2002Inventor: Kia Silverbrook
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Patent number: 6367147Abstract: In order to overcome inefficient power dissipation in parasitic resistances and to provide economies in the power supply, a higher resistance value heater resistor is employed in a thermal inkjet printhead. Higher current densities in a high resistance segmented heater resistor are reduced by employing a shorting bar divided by a current balancing resistor.Type: GrantFiled: March 5, 2001Date of Patent: April 9, 2002Assignee: Hewlett-Packard CompanyInventors: Matthew Giere, Noah C. Lassar, Satya Prakash
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Publication number: 20020036675Abstract: A method produces a liquid ejecting head having an ejection outlet for ejecting a liquid, a heat generating element for applying thermal energy to said liquid, a liquid flow path comprised of a first path portion in fluid communication with said ejection outlet and a second path portion disposed below said first path portion and provided with said heat generating element in a bottom surface thereof, a partition wall for partitioning said liquid flow path into said first path portion and second path portion, and a movable member disposed above said heat generating element in said portion wall and arranged as displaceable to a side of the first path portion in accordance with a bubble generated in the liquid by said thermal energy in which upon generation of said bubble the first path portion and the second path portion are in fluid communication with each other and said pressure is directed toward said ejection outlet by said movable member displaced to eject said liquid droplet.Type: ApplicationFiled: January 7, 1999Publication date: March 28, 2002Inventors: AYA YOSHIHIRA, HIROSHI SUGITANI, TADAYOSHI INAMOTO, MAKIKO KIMURA, TOSHIO KASHINO, SHUJI KOYAMA, TAKESHI OKAZAKI, KIYOMITSU KUDO, YOSHIE NAKATA, TOSHIHIRO MORI
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Patent number: 6360439Abstract: A method of manufacturing an orifice plate for a fluid ejection device comprises defining a plurality of orifice apertures in a substantially planar plate; and defining a plurality of closed slits in the plate.Type: GrantFiled: August 5, 1998Date of Patent: March 26, 2002Assignee: Hewlett-Packard CompanyInventors: Todd A. Cleland, Garrard Hume
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Publication number: 20020026708Abstract: A temperature control device whose heat conduction properties such as heat homogeneity, responsiveness and the like is fabricated by improving flatness.Type: ApplicationFiled: March 22, 2001Publication date: March 7, 2002Applicant: KOMATSU LTD.Inventors: Kazuya Kuriyama, Yoichi Yasue
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Patent number: 6346688Abstract: A glow plug construction for use in internal combustion engines has an annular washer seated at an open upper end of an outer shell having a crimp portion extending to an upper rim. The annular washer has a ridge-like upper surface, with a preferably curved configuration. And the crimp portion of the outer shell is contouredly bent around the ridge-like upper surface with the upper rim extending past and below an apex of the annular washer. In this manner, the crimp portion exerts a substantial crimp pressure along the annular washer. Furthermore, a crimping method produces the crimped glow plug construction by gradually moving a crimping die against the crimp portion. The crimping die has a concave annular die such that, upon exertion of the preferably hydraulic crimping force, the crimp portion is plastically bent around the annular washer and the upper rim extends past and below the apex of the annular washer.Type: GrantFiled: October 24, 2000Date of Patent: February 12, 2002Inventor: Steven B. O'Donnell
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Patent number: 6342690Abstract: A glow plug assembly method and construction providing a partially assembled glow plug construction having a core body positioned in a hollow plug body with insulating support elements preventing contact between the core body and the plug body. Furthermore, a bolt fastener having a head portion and a threaded shank portion is threadedly secured into the open upper end of the hollow plug body such that a flange portion of the rod-like stud, as well as the insulating support members, are clamped together in a sealing manner.Type: GrantFiled: December 1, 2000Date of Patent: January 29, 2002Inventor: Steven B. O'Donnell
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Patent number: 6339881Abstract: A method of fabricating a printhead for use in an ink jet printing device which includes providing a substrate having at least one substantially planar surface. An array of heating elements are formed on the surface of the substrate and addressed with a current pulse from an electrode. Depositing an insulating layer over the surface. Next, the insulating layer is mechanically or chemically treated to expose the heating elements. An ink channel plate is formed and includes at least one ink reservoir and one ink channel. A key or keyway is formed on channel plate and a corresponding key or keyway is formed on the insulating layer. The said channel plate is then adhesively secured to the substrate using the key and keyway as an alignment aid to achieve proper positioning of the ink channels and the heating elements.Type: GrantFiled: November 17, 1997Date of Patent: January 22, 2002Assignee: Xerox CorporationInventors: Almon P. Fisher, Peter J. John
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Publication number: 20020001016Abstract: The invention is directed to provide a method for producing an ink jet recording head, which is free from the problems produced by an inexpensive system, and excellent in discharge stability.Type: ApplicationFiled: December 1, 1998Publication date: January 3, 2002Inventors: KENJI AONO, AKIHIKO SHIMOMURA
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Publication number: 20010052917Abstract: A method for manufacturing a liquid-discharging recording head can prevent deviation in the dimensions and the pitch of grooves, serving as liquid channels, and holes, serving as discharging ports, and generation of burrs around discharging ports while maintaining the grooves and the holes to desired sizes and without increasing a time required for the processing when forming the grooves and the holes by projecting a laser beam. In the method, when performing ablation processing of the liquid-channel grooves or the discharging ports in a top-plate blank by projecting the laser beam, the processing is performed by changing the energy density per unit time of the laser beam continuously or stepwise by adjusting the oscillation voltage or the oscillation frequency of the laser beam, attenuating the laser beam, or moving a substance to be processed along the optical axis.Type: ApplicationFiled: December 9, 1998Publication date: December 20, 2001Inventors: TOSHINORI HASEGAWA, MASAKI INABA, AKIO SAITO, AKIRA GOTO, MASAO FURUKAWA, SHIN ISHIMATSU, MIKI ITOH
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Publication number: 20010048454Abstract: The present invention relates a method of manufacturing a monolithic thermal fluid jet nozzle for the electronically controlled propulsion of fluids characterized by the steps of arranging said nozzle on a substrate on which at least one dielectric layer and at least one layer of metal or metal strip have been deposited; removing at least part of the deposited metal layer, leaving chancels adjacent to said at least dielectric layer or in-between dielectric layers, for the transportation of fluids; applying at least one heating element to the channel for fluid propulsion, which element superheats the fluid to form a vapour bubble which ejects at least part of the surrounding fluid through the nozzle.Type: ApplicationFiled: June 5, 1998Publication date: December 6, 2001Inventors: DAVID WESTBERG, GERT ANDERSSON
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Patent number: 6314636Abstract: A method of manufacturing an electric heater assembly with a plurality of electric heating units includes the steps of providing a tray-like support (1) and moulding microporous thermal and electrical insulation material into the support. The tray-like support (1) is formed with a number of dish-like recesses (2), each dish-like recess comprising a base (4) and a surrounding wall (5). The microporous thermal and electrical insulation material is moulded into each dish-like recess to form a base layer (6) against the base (4) of each dish-like recess and an upstanding wall layer (7) against the surrounding wall (5) of each dish-like recess, the base layer (6) being formed integrally with the wall layer (7). At least one electric heating element (12) is provided in each dish-like recess (2), the heating element being supported on or adjacent to the base layer (6). The electric heater assembly is adapted for use behind a plate (10) to provide a plurality of discrete heating zones on the plate.Type: GrantFiled: August 21, 1998Date of Patent: November 13, 2001Assignee: Ceramaspeed LimitedInventor: John Thomas Hughes
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Patent number: 6305080Abstract: A method for manufacturing an ink jet recording head, which is provided with orifices for liquid discharge use, nozzles communicated with the orifices, electrothermal converting members arranged in the nozzles to form bubbles in the liquid by providing thermal energy for it, the liquid chamber communicated with the nozzles to supply liquid to the nozzles and a substrate having the electrothermal converting members provided therefor, comprises the steps of preparing the substrate to be a silicon substrate having (100) plane or (110) plane crystal axes therefor, forming organic resin layer at least in the liquid chamber on the silicon substrate, then, removing by means of anisotropic etching a part of the liquid chamber formation portion of the substrate from the reverse side of the formation surface of the organic resin layer and forming an elastic member portion formed by the membrane of the organic resin layer in the liquid chamber.Type: GrantFiled: December 17, 1998Date of Patent: October 23, 2001Assignee: Canon Kabushiki KaishaInventors: Hirokazu Komuro, Takashi Fujikawa, Ken Tsuchii, Norio Ohkuma, Hideto Yokoi, Shuichi Murakami
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Publication number: 20010027973Abstract: A two-dimensional heating element, especially for seat heaters in the motor vehicle sector, having a textile base material and contact conductors and heating conductors which are electrically conductive and touch one another. The contact conductors delimit heating areas. The heating conductors are laid effectively in the direction of stitch wales and orthogonal to the stitch wales in such a way that there are at least two zones functioning at least as a main heating area and at least as a secondary heating area with different heating capacities.Type: ApplicationFiled: March 27, 2001Publication date: October 11, 2001Applicant: I.G. Bauerhin GmbHInventor: Jochen Michelmann
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Patent number: 6294771Abstract: A heater comprising a substrate having a heating surface to treat a substance to be heated on the substrate, a heating element embedded in the substrate, and a resistance control part, wherein the substrate comprises a first ceramic material and the resistance control part comprises a second ceramic material which has higher volume resistivity than that of the first ceramics.Type: GrantFiled: January 3, 2001Date of Patent: September 25, 2001Assignee: NGK Insulators, Ltd.Inventors: Yuji Katsuda, Kiyoshi Araki, Tsuneaki Ohashi
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Patent number: 6278088Abstract: A rod glow plug comprises a glow tube, inner heating coil(s) and optionally control coil(s), and a terminal pole which leads into the glow tube, the coil(s) being connected to the terminal pole and glow tube tip, there being a stabilizer rod (10) which extends in an assembly stage from the terminal pole (9) to the glow tube tip, optionally into an opening in the glow tube tip or through it, and the stabilizer rod (10) being located essentially in the middle running through the coil(s).Type: GrantFiled: February 15, 2000Date of Patent: August 21, 2001Assignee: Beru AGInventors: Martin Eller, Martin Allgaier
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Patent number: 6274855Abstract: A ceramic heater of required heating properties is made available in that adjusting elements made solid in an electric conductive element are added other than electric conductive elements of an heating resistor in a ceramic heater. Accordingly, resistance temperature coefficient is changed, not largely changing other properties of heating materials.Type: GrantFiled: November 16, 1999Date of Patent: August 14, 2001Assignee: NGK Spark Plug Co., Ltd.Inventors: Kazuho Tatematsu, Shindo Watanabe
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Publication number: 20010011415Abstract: A nozzle assembly for use in injection molding comprises a pair of spacers acting between the manifold and either a cover plate or a hot runner plate of an injection molding machine to apply a contact pressure between the nozzle body melt channel and the manifold melt channel to achieve a seal therebetween. The resilience of the spacers result in an increased operational temperature range for the nozzle assembly, the contact pressure being generated and/or maintained over the range of the operational temperatures. An additional advantage is provided in that the nozzle assembly is compact and can be closely spaced with similar nozzle assemblies to achieve center spacings as small as eight millimeters. The assemblies can be mounted and/or removed from the cavity of the manifold plate, and/or changing of the nozzle heater elements, without requiring removal of the mold from the injection mold machine.Type: ApplicationFiled: December 15, 2000Publication date: August 9, 2001Inventor: Jacek Kalemba
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Patent number: 6253447Abstract: A method for manufacturing a thermal head comprises forming a heat generating resistor on an insulative substrate, and disposing conductors having different material properties on the heat generating resistor for supplying power to the heat generating resistor. The conductors are then etched to form a wiring electrode having a tapered peripheral edge portion as a result of the different material properties of the conductors. A protective film is then formed over the heat generating resistor and the wiring electrode.Type: GrantFiled: March 16, 1999Date of Patent: July 3, 2001Assignee: Seiko Instruments Inc.Inventors: Yuji Nakamura, Yoshinori Sato, Yoshiaki Saita
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Patent number: 6243941Abstract: The thermal head fabrication method provides a thermal head having a lower protective layer composed of at least one sub-layer on heat generators and electrodes, an intermediate protective layer composed of at least one sub-layer on the lower protective layer and an upper protective layer composed of at least one sub-layer with carbon as a main component on the intermediate protective layer. At least one of surfaces of the lower and intermediate protective layers is cleaned by ion irradiation processing, by polishing with a lapping tape or an adhesive tape, or by heating processing in vacuum before forming a higher protective layer. This allows the thermal head to have excellent adhesion between any individual layers and sufficient durability to ensure that the thermal recording of high-quality images is consistently performed over an extended period of time.Type: GrantFiled: July 19, 1999Date of Patent: June 12, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Makoto Kashiwaya, Junji Nakada
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Patent number: 6240623Abstract: The invention relates to a method and a system of manufacturing an electric heater (1) intended for heating foam-molded cushions for e.g. vehicle seats or mattresses, said heater (1) comprising an electric conductor (2) which preferably consists of an insulated or non-insulated metal wire. The method comprises the steps of arranging a plurality of protruding members (10) forming part of a conductor layout structure (9) in a pattern adapted to the configuration of the heater (1), arranging a conveyor (13) which is equipped with a follower (14) along a track (13) which essentially corresponds to the desired configuration of the heater (1) around said protruding member (10), and moving said conveyor (13) while said follower (14) deposits said conductor (2) along said track.Type: GrantFiled: August 20, 1998Date of Patent: June 5, 2001Assignee: Tocksfors Verkstads ABInventor: Göran Johansson
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Patent number: 6240624Abstract: A dust collection electrode with catalyst to be provided on the electronic dust collector is manufactured simply at low cost without using a furnace. To the surface of the metal tube of the sheathed heater a low temperature curing type heat resistant inorganic adhesive is applied. Thereafter, a catalyst such as Zeolite is adhered to the heat-resistant inorganic adhesive. Next, the sheathed heater is energized to make self-heating, and using said heating, the heat-resistant inorganic adhesive is heated to cure, thereby fixing the layer to the surface of the metal tube.Type: GrantFiled: October 18, 1999Date of Patent: June 5, 2001Assignee: Funai Electric Co., Ltd.Inventor: Yasumasa Hironaka
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Patent number: 6236423Abstract: In a thermal head, individual electrodes, a common electrode and a heating body are formed on an insulated base plate, and an insulating protective film is formed on the heating body. A conductive protective film is mounted on the insulating protective film to laminate on and connect with the common electrode. The conductive protective film has a thermal conductivity higher than that of the insulating protective film. Since the conductive protective film is connected to the common electrode, effects by static electricity due to friction with thermal-sensitive paper are prevented.Type: GrantFiled: April 6, 2000Date of Patent: May 22, 2001Assignee: AOI Electronics Company LimitedInventor: Norio Yamaji
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Patent number: 6226861Abstract: An A/F sensor generates a current signal corresponding to an air-fuel ratio in response to a voltage applied by a bias control circuit. After a sensor current is received as a voltage signal via a voltage follower, it is outputted to an A/D converter having a predetermined input voltage range, 0 to 5V. A sensor current detection circuit has a plurality of current detection resistors. In order to variably set the resistance value by the sensor current detection circuit, a switch circuit is switched in accordance with the sensor current depending on whether the A/F value to be detected is in the zone near the stoichiometric ratio or in other air-fuel ratio zones.Type: GrantFiled: August 10, 1999Date of Patent: May 8, 2001Assignee: Denso CorporationInventors: Eiichi Kurokawa, Satoshi Hada, Tomoo Kawase, Toshiyuki Suzuki, Satoshi Haseda
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Patent number: 6216334Abstract: A flexible electric heater comprises a heat resistant support (4) of sheet or tape form having at least one electrical resistance heating element (1) secured thereto. The at least one heating element comprises a ribbon (2) of electrical resistance material provided with a plurality of integral tabs (3). The tabs have been pressed through the support to secure the heating element to the support. The support (4) is flexible and comprises a woven fabric material, such as woven glass fabric or woven ceramic fabric, or a non-fibrous material, such as flexible mica.Type: GrantFiled: March 11, 1998Date of Patent: April 17, 2001Assignee: Ceramaspeed LimitedInventor: John Thomas Hughes
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Patent number: 6205649Abstract: A ceramic heater which has an alumina rod, an alumina based ribbon sintered to the rod, and a platinum resistor element bonded to the ribbon. Additionally, a method of making a ceramic heater by preparing a ceramic slurry; combining the ceramic slurry with a binder component to form a slip; depositing the slip onto a carrier film at a controlled thickness such that a deposited slip is formed; heat curing the deposited slip to form a cured slip ribbon; applying a platinum paste onto the ribbon in a specific pattern, the paste forming a platinum resistor element on the ribbon; applying the ribbon with the platinum resistor element onto an alumina rod; and, heating the rod with the ribbon and the platinum resistor element thereon, whereby the ribbon is sintered to the rod and the platinum resistor element is sintered and bonded to the ribbon.Type: GrantFiled: June 1, 1999Date of Patent: March 27, 2001Inventors: Mark A. Clayton, Garry L. Renner, Mark J. Cresanti
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Patent number: 6205648Abstract: An electric heater unit is manufactured so as to form a base in a supporting dish by compacting powdered microporous insulation into the base. At least one electrical resistance heating element is supported on or adjacent to the base and a peripheral wall is formed in the supporting dish and integral with the base by compacting further microporous insulation material into the dish to a controlled compaction density. The compaction density of the peripheral wall may be different from that of the base, for example higher.Type: GrantFiled: March 3, 1998Date of Patent: March 27, 2001Assignee: Ceramaspeed LimitedInventor: John Thomas Hughes
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Patent number: 6185812Abstract: A method of making an electrically heated window from at least two plies of transparent glazing material, at least one ply of interlayer material and an electrically resistant heating area device extending over one of the plies includes laying at least one length of busbar strip on one of the plies to form part of a busbar, positioning a separate corner piece of busbar strip adjacent the length of busbar strip to form a corner of the busbar, and electrically connecting the corner piece and the length of busbar strip to one another. An electrical connection device is arranged to extend from the electrically resistant area heating device past the peripheral edge of the window to terminate outside the window. The plies of glazing material are then laminated together with the ply of interlayer material and the electrically resistant area heating device extending between them.Type: GrantFiled: July 10, 1998Date of Patent: February 13, 2001Assignee: Pilkington Glass LimitedInventors: Derek Charles Castle, Mark Andrew Chamberlain
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Patent number: 6184509Abstract: A heating apparatus comprises a plastic body and a planar heating element, together defining a liquid heating vessel. The heating element is clamped between a portion of the body and a retaining ring, the body and the retaining ring being fixed together by an induction weld. Uniform compression of a seal is obtained during the welding process. The weld provides a reliable seal.Type: GrantFiled: April 20, 1999Date of Patent: February 6, 2001Assignee: U.S. Philips CorporationInventors: Gerald R. F. Scott, David V. Hefford
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Patent number: 6131256Abstract: A temperature compensated resonator (15) and method for making the temperature compensated resonator (15). The temperature compensated resonator (15) has a substrate (110) including a cavity (120, 160) and a resonator layer (150). A bonding medium (159, 160) couples the substrate (110) to the resonator layer (150). The resonator layer (150) is bonded atop the cavity (120, 160). A conductor (215) is included on the resonator layer (150). The conductor (215) heats the resonator layer (150) in response to a current passing through the conductor (215).Type: GrantFiled: April 23, 1997Date of Patent: October 17, 2000Assignee: Motorola, Inc.Inventors: Michael Dydyk, John Robert Welling
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Patent number: 6087639Abstract: A retainer bracket for an electric heating assembly is provided with a pair of parallel and opposing side beams having longitudinal axes and at least one planar transverse support formed integral with the pair of side beams and extending between the pair of side beams. The transverse support preferably has a plurality of openings with longitudinal axes and the transverse support is disposed so that the axes of the openings are parallel to the longitudinal axes of the side beams. The plurality of openings are thereby each adapted to receive and retain an insulator without a separate fastener. A method of making the heating coil retainer bracket from a single web of material is also contemplated.Type: GrantFiled: July 9, 1999Date of Patent: July 11, 2000Assignee: Hart & Cooley, Inc.Inventors: Roger P. Engelke, Leon Lietch
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Patent number: 6078028Abstract: An electrical connection for a ceramic hot surface element in which the ends of the hot surface element are essentially interference fit within a pair of metallic termination sleeves, and electrical connection to the hot surface element is provided by an active metal braze which is directly chemically bonded to the metallic termination.Type: GrantFiled: February 19, 1999Date of Patent: June 20, 2000Assignee: Saint-Gobain Industrial Ceramics, Inc.Inventors: John Cooper, Bela Nagy, David Shum, Brian Kochan, Scott Hamel
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Patent number: 6075231Abstract: A formed integral heated molding torpedo device for maintaining at a controlled elevated temperature material passing over an exposed surface of the device which has an integral casing containing a resistance wire wound core embedded in heat transfer electrical insulation material, with leads connecting the wire wound core to a source of power exiting from one end of the torpedo device, wherein the torpedo device is bent so that its heat transfer surface is arranged angularly to its end from which the leads exit. The invention also includes steps for making such a heated molding torpedo device.Type: GrantFiled: January 28, 1999Date of Patent: June 13, 2000Inventor: Walter Crandell
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Patent number: 6073340Abstract: Several heater patterns are printed on a ceramic green sheet for substrates, and the ceramic green sheet is laminated with a ceramic green sheet for cover plates, thereby forming a lamination body. Then, the lamination body is cut so that it is divided into several intermediate bodies, each of which holds a corresponding one of the heater patterns therein and has a side surface on which a terminal portion of the heater pattern is exposed. Then, the intermediate body is baked. As a result, a ceramic heater composed of a heater substrate holding the heater pattern and a cover plate disposed on the heater substrate to cover the heater pattern can be provided without any micro-cracks therein.Type: GrantFiled: May 29, 1998Date of Patent: June 13, 2000Assignee: Denso CorporationInventors: Makoto Shirai, Akira Fujii, Masayuki Kobayashi
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Patent number: 6074543Abstract: A method to produce a liquid ejecting head having an ejection outlet for ejecting a liquid, a heat generating element for applying thermal energy to the liquid, a liquid flow path comprised of a first path portion in fluid communication with the ejection outlet and a second path portion disposed below the first path portion and provided with the heat generating element in a bottom surface thereof, a partition wall for partitioning the liquid flow path into the first path portion and second path portion, and a movable member disposed above the heat generating element in the portion wall and arranged as displaceable to a side of the first path portion in accordance with a bubble generated in the liquid by the thermal energy in which upon generation of the bubble the first path portion and the second path portion are in fluid communication with each other and the pressure is directed toward said ejection outlet by the movable member displaced to eject the liquid droplet.Type: GrantFiled: April 15, 1996Date of Patent: June 13, 2000Assignee: Canon Kabushiki KaishaInventors: Aya Yoshihira, Hiroshi Sugitani, Tadayoshi Inamoto, Makiko Kimura, Toshio Kashino, Shuji Koyama, Takeshi Okazaki, Kiyomitsu Kudo, Yoshie Nakata, Toshihiro Mori
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Patent number: 6057530Abstract: A soft and flexible thin heating element made of electrically conductive carbon carrying fabric coated with a soft stabilizing material. The heating element is shaped by curing the soft stabilizing material and cutting the coated fabric into a desired pattern. The electrical contacts are attached to the ends of the heating element core, which are electrically connected in parallel or in series. The fabric heating element core is sealed to form a multi-layer assembly comprising of at least two electrically insulating layers which envelop each strip of the heating element core. A method of producing the soft and flexible heating element is also disclosed.Type: GrantFiled: August 29, 1996Date of Patent: May 2, 2000Assignee: Thermosoft International CorporationInventor: Arthur Gurevich
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Patent number: 6031729Abstract: A multi-chip module or other electronic semiconductor component (1) contains a multi-layer substrate (9) whose bottom surface, the bottom of the bottom layer (15) of that substrate, serves as the bonding surface for bonding the multi-chip module or component to a printed wiring board (8) using a thermally sensitive adhesive, such as a thermally sensitive adhesive or solder. The bottom layer (15) of that multi-layer substrate integrally includes a plurality of electrical heaters (16-28), arranged side by side. When energized with appropriate current, the heater generates sufficient heat to weaken the adhesive bond, allowing the MCM to be pulled away from the printed wiring board and removed, without weakening the bonding of the multiple layers of the laminate substrate or weakening the MCM component's bond to that substrate.Type: GrantFiled: January 8, 1999Date of Patent: February 29, 2000Assignee: TRW Inc.Inventors: Ryan S. Berkely, Mary C. Massey, William E. McMullen, III, Steven F. VanLiew
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Patent number: 6009616Abstract: A method of making a heated injection molding nozzle with an integral tip insert. First, an inner portion, an outer collar portion, and an electrical heating element are made and integrally brazed together in a vacuum furnace using a first nickel alloy brazing material. Then a tip insert is made having a desired configuration and seated in the front end of the inner portion and a second nickel alloy brazing material is applied around it. The second brazing material has a melting temperature which is substantially below that of the first brazing material. The tip insert is then integrally brazed in place by heating them to a temperature above the melting temperature of the second brazing material and below the melting temperature of the first brazing material. In addition to not affecting the metallurgical bonding between the other components, this allows the tip insert to be easily removed for replacement by again heating the nozzle to this same temperature.Type: GrantFiled: November 18, 1998Date of Patent: January 4, 2000Inventor: Jobst Ulrich Gellert
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Patent number: 5994680Abstract: An electric heating element having a central conductor and an outer metallic sheath is welded to a base of vessel to provide a heating container, for hot water in a domestic appliance for example. In order to carry out the welding, the vessel is heated up by an induction heater to a certain temperature and the temperature of the actual contacting welding surfaces raised above the certain temperature to a fusing temperature by applying and controlling electric power supplied to the conductor while the heating element is held firmly in position against the base.Type: GrantFiled: June 10, 1998Date of Patent: November 30, 1999Assignee: Chiaphua Industries LimitedInventor: John Duncan McNair
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Patent number: 5995127Abstract: A thermal print head is provided with a supporting substrate, a glaze layer formed on the substrate, a heating resistor which is formed on the glaze layer and made of Si and O and the rest being substantially composed of a metal, and electrodes connected to the heating resistor. The heating resistor has an unpaired electron density of 1.0.times.10.sup.19 /cm.sup.3. In addition, the reaction layer formed by reaction of the glaze layer and the heating resistor is formed between the glaze layer and resistor.Type: GrantFiled: March 12, 1997Date of Patent: November 30, 1999Assignee: Kabushiki Kaisha ToshibaInventor: Ryuichi Uzuka
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Patent number: 5983486Abstract: A process for producing an ink jet head comprising a liquid-discharge energy generating element for discharging a liquid, a discharge opening, a liquid-flow path, and a substrate for holding the liquid-discharge energy generating element, the process comprises the steps of: preparing the substrate; providing on the substrate the liquid-discharge energy generating element; providing a solid layer with a convex shape on the surface of the substrate where the liquid-discharge energy generating element has been provided and at the part where the liquid-flow path and the discharge opening are to be provided, the solid layer being formed of a resin capable of being dissolved away; applying on the substrate provided with the solid layer a curable material in a thickness larger than the thickness of the solid layer, to cover the solid layer; curing the curable material; evenly removing the cured material until the convex portion of the solid layer is laid bare; and dissolving away the solid layer to form the liquid-fType: GrantFiled: March 7, 1996Date of Patent: November 16, 1999Assignee: Canon Kabushiki KaishaInventors: Akihiko Shimomura, Shoji Shiba, Isao Imamura, Kenji Aono
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Patent number: 5979040Abstract: The present invention provides a method of making an auxiliary electrode layer for a common electrode pattern in a thermal printhead. The method of the present invention includes the steps of: preparing a master substrate (1') which has an obverse surface provided with a common electrode pattern (4) and corresponds to a plurality of head substrates; forming at least one slit (9) in the master substrate (1') where the slit extends along the common electrode pattern (4); and forming an auxiliary electrode layer (6) on a reverse surface of the master substrate (1') so that the auxiliary electrode layer (6) extends via the slit (9) for electrical connection to the common electrode pattern (4). The slit has a width of no less than 0.5 mm for example, particularly no less than 0.8 mm for controlling to provide a proper turnover (R) of the auxiliary electrode layer (6).Type: GrantFiled: February 10, 1997Date of Patent: November 9, 1999Assignee: Rohm Co., Ltd.Inventor: Hideaki Houki
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Patent number: 5974658Abstract: An elongate electrical resistance heating element of coiled material is secured to a support of insulating material by means of staples driven into the support. A jig is employed having an elongate slot open to a face of the jig for receiving the heating element. A movable elongate base member is provided in and co-operating with the slot, the base member having projections extending in a direction towards the face of the jig, the projections being arranged in predetermined spaced relationship along the base member. Grooves are provided at opposite sides of the slot for receiving staples, bridge members first, into the elongate slot from the face of the jig with the legs of the staples slidably received in the grooves. The grooves are positioned such that the bridge members of the staples are contactable by the projections on the base member.Type: GrantFiled: March 3, 1998Date of Patent: November 2, 1999Assignee: Ceramaspeed LimitedInventor: John Thomas Hughes
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Patent number: 5975756Abstract: A method of measuring the temperature of a wire which is surrounded by a layer of insulation includes the step of wrapping the layer of insulation with an electrically and thermally conductive ground shield having two opposing longitudinal ends, one of the ends being electrically grounded. A first relationship is determined between the temperature of the wire and a temperature of the shield. A second relationship is ascertained between an electrical resistance of the shield between the longitudinal ends and the temperature of the shield. The electrical resistance of the shield between the longitudinal ends is measured. The temperature of the wire is established by using the first relationship and the second relationship to correlate the measured electrical resistance of the shield to the temperature of the wire.Type: GrantFiled: December 11, 1997Date of Patent: November 2, 1999Assignee: MSX, Inc.Inventor: Thaddeus M. Jones
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Patent number: 5956841Abstract: A heater is inserted into an inside chamber of a sensor element until a tip end of the heater is surely brought into contact with a bottom surface of the inside chamber. Next, a metallic holder is attached on an outside surface of the heater. Then, the metallic holder is slid along the outside surface of the heater toward the bottom surface of the sensor element to engage the metallic holder with an edge of the sensor element.Type: GrantFiled: January 24, 1997Date of Patent: September 28, 1999Assignee: Denso CorporationInventors: Isao Watanabe, Michihiro Yamakawa, Masanori Fukutani
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Patent number: 5940957Abstract: A common recess, grooves, and common recess and/or column members in the grooves are formed on a base board at the same time, and such board is made a second base board, which is coupled to a first base board on which elements for liquid discharging energy are formed; hence obtaining an ink jet recording head provided with a filter unit in an arbitrary position in the region formed by the ink paths and the common liquid chamber. The filter unit can be processed by a single processing in the ink paths and/or the common liquid chamber to make it possible to prevent disabled discharge from taking place due to dust particles intermingled at the time of head manufacture. In this way, the discharging stability is enhanced, making a high-speed printing possible. A workpiece is efficiently processed by a single processing which is performed to process a three-dimensional configuration with respect to the direction in which the laser beam is irradiated.Type: GrantFiled: March 2, 1995Date of Patent: August 24, 1999Assignee: Canon Kabushiki KaishaInventors: Akira Goto, Masaki Inaba, Yutaka Koizumi, Tsuyoshi Orikasa, Toshio Kashino, Seiichiro Karita, Shuji Koyama, Haruhiko Terai, Kimiyuki Hayasaki, Kouichi Omata, Kiyomitsu Kudo, Takayuki Ono, Shin Ishimatsu
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Patent number: 5937494Abstract: A double-sided electrical interconnect flexible circuit particularly useful for ink-jet pens and a method for assembling an ink-jet pen with the flexible circuit is described. A wide web, dielectric, flexible tape, such as of a polyimide material, is used to allow the substantially simultaneous formation of redundant flexible circuits across the web. The web is laminated with a conductive material foil and a plurality of redundant circuit patterns formed on the web in a single masking and etching process, or the like. A cover layer, also of a wide web format, dielectric material is coated over the circuit patterned conductive layer. Vias are provided in both the tape under layer and the tape over layer for appropriate electrical connections whereby a first device, such as an ink-jet printer controller, can be connected through one layer and a second device, such as a replaceable ink-jet pen's electrically active components can be connected through the other layer.Type: GrantFiled: November 7, 1996Date of Patent: August 17, 1999Assignee: Hewlett-Packard CompanyInventors: Neal Meyer, Byron K. Davis