Members Having Different Coefficients Of Expansion Patents (Class 403/30)
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Patent number: 4564232Abstract: An automobile door with an inner plate and an outer plate wherein the outer plate has a panel formed from a synthetic resin. The panel is attached to a rigid metallic plate, such as steel, through a plurality of fastening holes formed in the longitudinal direction of the synthetic panel. One of the fastening holes near the forward end of the panel has a diameter substantially that of the fastening means. The remaining fastening holes are formed so as to allow longitudinal expansion and contraction of the synthetic panel. A lip portion is formed near the lower edge of the synthetic panel to engage with the inner plate of the door.Type: GrantFiled: March 5, 1984Date of Patent: January 14, 1986Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshitsugu Fujimori, Ryouhei Adachi, Hiroo Ebisawa, Yukio Kurachi, Masami Koike
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Patent number: 4493378Abstract: First and second members are disposed in spaced relationship to each other. The members may be electrically conductive. The first member may be provided with a particular coefficient of thermal expansion which is higher than the coefficient of the second member. A plurality of layers of insulating material are disposed between the first and second members and are hermetically sealed to one another and to the first and second members. Each of the layers of insulating material has a coefficient of thermal expansion less than the particular coefficient. The progressive layers of insulating material from the first member have coefficients of thermal expansion of decreased value. This causes the layers of insulating material to have coefficients of thermal expansion which approach the coefficient of the second member with progressive distances toward the second member.Type: GrantFiled: July 16, 1981Date of Patent: January 15, 1985Inventor: James C. Kyle
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Patent number: 4479735Abstract: Shrink fit sleeves 30 interposed between the hub 21 and the shaft 10 of a large rotating apparatus adapted for operation in an environment subject to severe cyclical loading as occasioned by large thermal transients, are provided with the property of having greater axial shear flexibility than radial flexibility and/or greater axial flexibility than that of the shrunk on component 21.Type: GrantFiled: January 13, 1983Date of Patent: October 30, 1984Assignee: Westinghouse Electric Corp.Inventors: Daniel G. Thompson, Siu-Kee Chan
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Patent number: 4436955Abstract: A terminal assembly includes a ferrule and a terminal pin disposed in spaced relationship to the ferrule. First layers made from a first ceramic insulating material are disposed in spaced relationship to each other in the space between the terminal pin and the ferrule. The layers are primarily polycrystalline but partially amorphous. Second layers made from a second ceramic insulating material are disposed in spaced relationship to each other in the space between the terminal pin and the ferrule and between the first layers. The second layers are fused to the terminal pin and the ferrule and the first layers. The second layers are primarily amorphous but partially polycrystalline. Layers of a third insulating material having relatively high characteristics of electrical insulation and having a lower melting temperature than the first and second layers may be respectively disposed at the opposite ends of the terminal assembly.Type: GrantFiled: May 15, 1981Date of Patent: March 13, 1984Inventor: James C. Kyle
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Patent number: 4430376Abstract: A glass-to-metal compression sealed lead-in structure for electronic devices. The structure is constituted by an outer metal case having a high coefficient of thermal expansion (CTE), a lead-in conductor extending through the opening in the case and having a relatively low CTE, and a glass seal filling the space between the conductor and the case and having a relatively low or intermediate CTE. The conductor is fabricated of a machinable metal whose normal CTE is higher than required, the surface of the metal after the conductor is machined to specification, being treated with a substance that acts to reduce the CTE of the conductor to render it compatible with the CTE of the glass seal.Type: GrantFiled: July 13, 1982Date of Patent: February 7, 1984Inventor: Leonard J. Box
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Patent number: 4425476Abstract: A ferrule is provided with an opening extending through the ferrule and a terminal pin is disposed in the opening in spaced relationship to the ferrule. A plurality of insulating members are disposed on the terminal pin in the opening in a stacked relationship. Each of the insulating members is fused to the terminal pin and the ferrule. Each of the insulating members in the stack has a higher temperature of fusion than the preceding members in the stack. The insulating members in the stack are progressively fused to the ferrule and the terminal pin by the application of progressive temperatures to the terminal pin, the ferrule and the insulating members.The insulating members having the highest temperature of fusion are provided with properties of being able to withstand large forces without any degradation of the fusion with the terminal pin and the ferrule. The insulating members of the reduced temperatures of fusion are able to withstand other types of shock such as sudden changes in temperature.Type: GrantFiled: April 6, 1981Date of Patent: January 10, 1984Inventor: James C. Kyle
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Patent number: 4421947Abstract: A material hermetically seals two members. One member may be titanium or a titanium alloy and the other member may be a noble metal such as platinum. The seal is resistant to acids and alkalis and is substantially impervious to shocks resulting from mechanical forces or abrupt changes in temperature. The material includes a pair of fluxes having different melting temperatures and a stuffing material including the oxides of zinc and zirconium. The oxides of zinc and zirconium become crystallized at the surface between one of the members and the material. An oxygen valence bond is also produced between the material and such member. The material is more amorphous at the boundary with the second member than at positions removed from such member. The material is formed by progressive heatings for at least a pair of periods of time insufficient to crystallize all of the material and by rapid coolings of the material after each of such heatings.Type: GrantFiled: January 28, 1981Date of Patent: December 20, 1983Assignee: James C. KyleInventor: James C. Kyle
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Patent number: 4361720Abstract: A low thermal resistance insulating support permitting thermal stresses in the base of a high power component incorporating a beryllium oxide element without fractures or flaws occurring. The support includes a dissipating support made from copper, whose two large faces are slotted to at least partly house a beryllium oxide disk which receives a component and its connections to the outside. Such also completely houses a molybdenum disk with an expansion coefficient close to that of the beryllium oxide.Type: GrantFiled: April 30, 1980Date of Patent: November 30, 1982Assignee: Thomson-CSFInventors: Jean-Claude Resneau, Jean Doyen, Robert Ribier
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Patent number: 4352951Abstract: Acid and alkali oxides are smelted for an extended period of time at a first elevated temperature above their melting temperatures. The smelted mixture is then quenched in water and fritted. The fritted mixture is then disposed between a pair of members which are to be hermetically sealed relative to each other. The fritted mixture is then at least partially fused in an oxygen atmosphere at a second temperature below the first temperature for a relatively short period of time. The at least partially fused mixture is then rapidly cooled in air. In this way, the mixture is provided with a partially amorphous state and a partially crystalline state. The crystals in the mixture are disposed primarily at the borders of at least a particular one of the members to be sealed.The mixture hermetically seals the two members, is resistant to acids and alkalis and inhibits the propagation of cracks.Type: GrantFiled: September 26, 1977Date of Patent: October 5, 1982Assignee: Medical Components Corp.Inventor: James C. Kyle
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Patent number: 4309507Abstract: An improved sealing glass composition for making compression glass electrical feedthroughs in semiconductor device packages is described wherein the improved sealing glass consists essentially of (by weight percent) 63-68% SiO.sub.2, 3-6% Al.sub.2 O.sub.3, 8-9% K.sub.2 O, 5-6% Na.sub.2 O, 0.5-1.5% Li.sub.2 O, 2-4% BaO, 5-7% SrO, 2-4% CaO, 0.5-1.5% MgO, 0.5-1.5% TiO.sub.2, and 0.5-1.5% B.sub.2 O.sub.3.Type: GrantFiled: February 23, 1981Date of Patent: January 5, 1982Assignee: Motorola, Inc.Inventors: Earl K. Davis, Robert W. Hey
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Patent number: 4302149Abstract: A variable geometry gas turbine has an array of ceramic composition vanes positioned by an actuating ring coupled through a plurality of circumferentially spaced turbine vane levers to the outer end of a metallic vane drive shaft at each of the ceramic vanes. Each of the ceramic vanes has an end slot of bow tie configuration including flared end segments and a center slot therebetween. Each of the vane drive shafts has a cross head with ends thereof spaced with respect to the sides of the end slot to define clearance for free expansion of the cross head with respect to the vane and the cross head being configured to uniformly distribute drive loads across bearing surfaces of the vane slot.Type: GrantFiled: February 19, 1980Date of Patent: November 24, 1981Assignee: General Motors CorporationInventor: Charles H. Smale
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Patent number: 4299018Abstract: A roll for use under high or low temperature conditions, for example a conveyor roll in a flat glass annealing lehr, comprises a tire of a different material from collars on the roll between which the tire is held. The tire and at least one collar have matching frusto-conical surfaces which are designed so that differential thermal expansion between the tire and the retaining collars causes sliding movement only of frusto-conical surfaces relative to each other.Type: GrantFiled: April 9, 1979Date of Patent: November 10, 1981Assignee: Pilkington Brothers LimitedInventors: Kenneth Bickerstaff, John D. Brewin
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Patent number: 4281941Abstract: An improvement in a high thermal stress connection between a rotationally symmetrical component made of ceramic material and a component made of metallic material is provided in which a connecting part which is elastic and radially and axially resilient connects the ceramic part and the metallic part by means of high temperature soldering. The stresses normally produced by differential expansion of the ceramic part and the metallic part are substantially absorbed by elastic deformation of the connecting part.Type: GrantFiled: October 16, 1979Date of Patent: August 4, 1981Assignee: Volkswagenwerk AktiengesellschaftInventor: Paul Rottenkolber
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Patent number: 4279576Abstract: A rotating speed detecting device of a turbocharger comprising the compressor wheel and the turbine wheel which are fixed onto the opposed ends of the rotary shaft. A hole is formed on the central portion of the shaft. An electromagnetic detector is arranged in the vicinity of the central portion of the shaft so that the detecting head of the detector can face the hole of the shaft.Type: GrantFiled: June 28, 1979Date of Patent: July 21, 1981Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Hiroshi Okano, Yoshihisa Gunji
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Patent number: 4232712Abstract: A heat-recoverable article for protecting a conduit, for example, an electric cable, where its conductors pass through an aperture in a bulkhead, in order, for example, to prevent chafing; the article has an inner expansible and an outer shrinkable sleeve, the outer jacket of the cable terminating in an annular space between the sleeves, the space shrinking on heating of the article; one end of the inner sleeve is expansible to grip the bulkhead.Type: GrantFiled: September 25, 1978Date of Patent: November 11, 1980Assignee: Raychem LimitedInventor: David T. Squires
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Patent number: 4227036Abstract: An improved ceramic-based package for electronic devices having a composite flange for heat dissipation comprising a layer of heat conducting metal having a thermal coefficient of expansion appreciably different from that of the base secured to the base and a second layer of metal secured to the first layer having a thermal coefficient of expansion approximately equal to that of the ceramic. In a preferred embodiment, the first layer is copper, and the second is molybdenum.Type: GrantFiled: September 18, 1978Date of Patent: October 7, 1980Assignee: Microwave Semiconductor Corp.Inventor: William Fitzgerald
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Patent number: 4207807Abstract: A plastic air cylinder assembled by the specific combination of a plurality of metal tie rods, inside and outside nuts, a resilient and compressible member and supporting plates whereby the plastic cylinder tube is permitted to expand more than the metal tie rods.Type: GrantFiled: August 31, 1978Date of Patent: June 17, 1980Assignee: Oiles Industry Co., Ltd.Inventors: Yataro Takata, Yukinori Takenoshita, Kiyoshi Sasahara, Akira Shigaki, Kazuo Hirai, Kosei Maeda, Hideo Tadokuro, Hirokazu Maeda
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Patent number: 4194643Abstract: A cathode ray tube has an envelope comprised of a first glass and a faceplate comprised of a second glass, both glasses having different thermal coefficients of expansion. The envelope and faceplate are joined by a cylindrical, stress-absorbing glass member flame-sealed at one end to the envelope and frit-sealed at the other end to the faceplate. Importantly, the thermal coefficient of expansion of the stress-absorbing member is less than the coefficients of either the envelope or the faceplate.Type: GrantFiled: December 19, 1978Date of Patent: March 25, 1980Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Adolph G. Hager, Philip F. Krzyzkowski
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Patent number: 4167351Abstract: For sealing metal annular elements on to a cylindrical ceramic member, e.g. a ceramic electrolyte tube in a sodium-sulphur cell without causing excessive hoop stress in the ceramic, the ceramic tube is formed with tapered inner and outer surfaces at one end, correspondingly tapered inner and outer annular elements are put over these surfaces with a soft metal, e.g. aluminium interface layer, the inner and outer annular elements having coefficients of thermal expansion respectively less than and greater than that of the ceramic, the assembly is then heated and the annular elements forced in the axial direction onto the ceramic whereby the ceramic material, on cooling, is tightly secured between the annular members.Type: GrantFiled: May 19, 1977Date of Patent: September 11, 1979Assignee: Chloride Silent Power LimitedInventor: Peter J. Bindin
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Patent number: 4128697Abstract: Hermetically sealed lead-in structures of the compression seal type, useful for electronic devices and particularly for transistor and integrated circuit headers, are described. The seal structures comprise a glass-metal compression seal between steel casing and low-expansion cobalt-nickel-iron alloy leads, utilizing specific glassy sealing materials which impart thermal shock resistance of at least 425.degree. C. to the compression seal.Type: GrantFiled: April 22, 1977Date of Patent: December 5, 1978Assignee: Corning Glass WorksInventor: William M. Simpson
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Patent number: 4100962Abstract: A casting die having separate die segments that cooperate to form an internal die cavity for receiving molten metal at the top thereof for subsequent solidification and removal therefrom in continuous strip or bar form. Novel retaining means in the form of cooperating bolt/bushing sets are provided for maintaining the relative positioning of the segments, the bolts having a lower coefficient of expansion than that of the bushings, so that upon heating of the die, the relatively greater expansion of the bushings will serve to place a continuing force upon the segments through bolt tensioning so as to maintain the die segments in face-to-face relationship and to eliminate possible flashing of metal therebetween.Type: GrantFiled: February 28, 1977Date of Patent: July 18, 1978Assignee: James H. HousmanInventor: Robert B. Housman
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Patent number: 4098476Abstract: A support which can be assembled and disassembled at room temperature and events translational and rotational motion at temperatures below room temperature. A truncated cone is located between an outer support housing and an inner housing which is to be supported. The narrow end of the cone is sized to fit over the inner housing and the wide end of the cone is sized to fit within the outer support housing. The cone is comprised of a material which has a higher thermal expansion coefficient than the inner housing.Type: GrantFiled: June 7, 1977Date of Patent: July 4, 1978Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Herbert F. Jutte, Charles J. Starkus
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Patent number: 4076586Abstract: In a pressurized water reactor, the pressure vessel contains a plurality of fuel wrappers of parallelepipedal section supported on a lower grid which carries projecting sleeves equal in number to the wrappers. Each sleeve penetrates into a bore of a wrapper base plate and has a higher coefficient of thermal expansion than the base plate so that its external diameter is smaller than that of the bore in the cold state and equal thereto at the operating temperature of the reactor. The bore is thus clamped against the sleeve as a result of thermal expansion, the fuel assemblies being secured within the wrappers by means of spring-type elastic devices.Type: GrantFiled: September 21, 1976Date of Patent: February 28, 1978Assignee: Commissariat a l'Energie AtomiqueInventors: Jean Bideau, Jacques Levy, Jean-Luc Viaud
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Patent number: 4029897Abstract: Hermetic glass seals of high electrical resistivity are provided. Glass compositions suitable for use in such seals and based on lead-silica glasses are described. Glass compositions having particular efficacy in a nuclear reactor environment also are described.Type: GrantFiled: August 7, 1975Date of Patent: June 14, 1977Assignee: Quality Hermetics LimitedInventors: Peter Mayer, M. Krishna Murthy, Albert H. Brooks, John A. Topping