By Temperature Differential (e.g., Shrink Fit) Patents (Class 29/447)
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Patent number: 7959387Abstract: A tool holder includes a shank including a tool holder portion and a central bore for accommodating a cutting tool, and a first shrink fit sleeve disposed about the tool holder portion of the shank. An application of heat to the tool holder causes the tool holder portion and the first shrink fit sleeve to expand outwardly, and the removal of heat will cause the tool holder portion and the first shrink fit sleeve to contract inwardly to rigidly maintain the cutting tool within the tool holder by shrink fit. The tool holder may also include a second shrink fit sleeve disposed about the first shrink fit sleeve to provide increased torque capability.Type: GrantFiled: October 3, 2007Date of Patent: June 14, 2011Assignee: Kennametal Inc.Inventors: Ruy Frota de Souza, Robert E. Oshnock
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Patent number: 7950154Abstract: An assembly of a pair of roller bearings in which the inner bearing rings are axially spaced apart by a first member and the outer bearing rings are spaced apart by a second member with one of the inner or outer ring of each bearing being an axially outer bearing ring spaced axially further from the outer bearing than the other ring of that bearing. The method comprises forming an assembly of the two members and bearings in which one of the axially outer bearing ring is a loose fit on one of the first and second members, and then axially moving the axially outer bearing ring of the one bearing which is loose fit in a direction towards the other bearing to create a pre-load, and then increasing the degree of pre-load to effect elastic deformation of that ring and thereby create a shrink fit type interface load.Type: GrantFiled: March 25, 2002Date of Patent: May 31, 2011Assignee: Hansen Industrial Transmissions N.V.Inventor: Dirk-Olaf Leimann
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Patent number: 7938408Abstract: The invention proposes a tool holder (1), in particular of the shrink-fit chuck type, the receiving section (5) of which comprises clamping means (9) which are provided centrally with respect to an axis of rotation (7) of the tool holder (1) for holding a shank (15) of a rotary tool, and which define a receiving opening (13) for the shank (15). The clamping means (9) can be displaced in the radial direction between a radially widened release position for insertion or removal of the shank (15) and a clamping position, in which the clamping means (9) exert radial press-fit forces, which hold the shank (15) in a frictional lock on its cylindrical outer circumferential surface (19), on the shank (15). The clamping means (9) are assigned a clamping surface (17) with a cylindrical contour which, in the clamping position, bears against the outer circumferential surface (19) of the shank (15) with surface-to-surface contact.Type: GrantFiled: June 14, 2005Date of Patent: May 10, 2011Assignee: Franz Haimer Maschinenbau KGInventor: Franz Haimer
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Patent number: 7926178Abstract: A method of assembling a fuel nozzle includes providing a first nozzle component and a second nozzle component, wherein the first nozzle component is configured and adapted to engage within the second nozzle component. Braze is applied to at least one of the first and second nozzle components. The first nozzle component is assembled into the second nozzle component to provide a diametral interference fit therebetween. The method further includes joining the first and second nozzle components together. A fuel nozzle includes a first cylindrical nozzle component, a second cylindrical nozzle component disposed with an interference fit on an outward surface of the first nozzle component, and a layer of braze joiningly disposed between the first and second nozzle components.Type: GrantFiled: November 30, 2007Date of Patent: April 19, 2011Assignee: Delavan IncInventors: Neal Thomson, Derrick Clausen, Kevin Groeneveld
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Patent number: 7918006Abstract: A method for making pipe joints on successive pipe sections introduced into an oil well as assembled into a pipeline in which the joints are substantially of the same dimensions as the pipe sections to allow for subsequent plastic expansion of the sections. In each joint, a female pipe end is tapered on the inside and an adjacent male end is tapered on the outside preferably with a complementary self locking taper which also has an interference fit. The female pipe end is heated to be expanded sufficiently to be assembled onto the male end and thereafter cooled to grip the male end in a leakproof manner. For larger pipe sizes, the tapered shapes have features which interlock in a leakproof manner when engaged after assembly of the pipe ends. The tapered shapes preferably are formed by a reversibly positioned forming tool which is alternately engaged with male and female pipe ends to ensure perfectly matching shapes.Type: GrantFiled: December 13, 2007Date of Patent: April 5, 2011Inventors: Semyon Brayman, Alexander Rudovich
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Patent number: 7909591Abstract: An eccentric screw pump or an eccentric screw motor has a rotor formed from at least a tubular jacket with at least two layers. The outer layer of the jacket consists of a material that is abrasion-resistant and/or corrosion-resistant.Type: GrantFiled: August 14, 2004Date of Patent: March 22, 2011Assignee: Wilhem Kachele GmbHInventor: Bruno Kachele
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Publication number: 20110056402Abstract: The invention relates to a plasma generator (4) for electrothermal and electrothermal-chemical weapons systems, the plasma generator being intended, via at least one emitted energy pulse, to form a plasma, which is designed to accelerate a projectile (3) along the barrel (11) of the weapons system in question, the plasma generator comprising a combustion chamber (20) having an axial combustion chamber channel (20?) and a ceramic arranged inside the combustion chamber channel for insulating the combustion chamber. According to the invention the ceramic consists of a shrink- fixed, compressively pre-stressed ceramic tube (23). The invention also relates to a method for shrink-fixing the ceramic tube in the combustion chamber channel as well as an ammunition round comprising a plasma generator according to the invention.Type: ApplicationFiled: March 23, 2009Publication date: March 10, 2011Applicant: BAE Systems Bofors ABInventors: Lennart Gustavsson, Ola Stark
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Patent number: 7882632Abstract: In an industrial pump, a bearing provided in a pump main body rotatably supports both end sides of a rotating shaft to which an impeller is attached. A shaft seal apparatus is arranged in adjacent to the bearing. The shaft seal apparatus is cooled by a cooling water introduced from an external portion. A shaft seal case is fitted to an inner peripheral surface of a bracket accommodating the shaft seal apparatus in accordance with a shrink fitting. A cooling water is circulated in a boundary portion between the bracket and the shaft seal case. It is omitted a work for closing an opening portion of a cooling means for circulating the cooling water by welding.Type: GrantFiled: January 31, 2006Date of Patent: February 8, 2011Assignee: Hitachi Industries Co., Ltd.Inventors: Tetsuya Yoshida, Yoshimasa Chiba
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Patent number: 7871133Abstract: In one aspect of the invention, a degradation assembly comprises an impact tip brazed to a carbide bolster. A stem protrudes from the bolster, being adapted to be retained within a bore connected to a driving mechanism. A locking fixture is disposed within the bore and locking the stem to a wall of the bore.Type: GrantFiled: April 30, 2008Date of Patent: January 18, 2011Assignee: Schlumberger Technology CorporationInventors: David R. Hall, Scott Dahlgren
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Patent number: 7866041Abstract: The present invention provided a method of manufacturing a duct for a gas turbine engine or the like from sheet metal material; the method comprising the steps of: fabricating a duct from sheet material (10,12,14) including rolling or folding metal sheet along ruled lines to form a ruled surface geometry approximately corresponding to at least part of a desired irregular final duct geometry; welding corresponding rolled or folded parts of the duct skin together and positioning the duct on a heat treatment fixture (30) having a shape corresponding to the said desired irregular duct geometry; the material of the heat treatment fixture having a greater thermal expansion coefficient than the duct material; heating the duct and fixture substantially to a stress relieving temperature of the duct material such that differential thermal expansion of the duct and fixture at the said stress relieving temperature causes the duct to distort and adopt the shape of the exterior surface of the fixture on which the duct is lType: GrantFiled: April 10, 2006Date of Patent: January 11, 2011Assignee: Rolls-Royce PLCInventors: Richard Green, Peter Frost, Michael Annear
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Patent number: 7866154Abstract: An assembling apparatus (manufacturing apparatus) can assemble an actuator (product) in which a shape memory alloy (SMA) is stretched. In the assembly, the SMA is locked by a first holder, a guide is moved along predetermined movement directions while sending the SMA and, after that, the SMA is locked by a second holder. A switch is turned on to pass current from a current source to the SMA via an electrode. The SMA is fixed to two electrodes by caulking members and, after that, an unnecessary portion of the SMA is cut. In such a manner, the actuator is manufactured. Since the SMA is tensioned while current is passed to the SMA as described above, the stretch can be stably performed while suppressing elongation of the SMA. As a result, a product can be manufactured with high quality.Type: GrantFiled: February 3, 2006Date of Patent: January 11, 2011Assignee: Konica Minolta Holdings, Inc.Inventors: Kouji Hamaguchi, Junichi Tanii
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Publication number: 20110001416Abstract: A shelving unit for a cabinet, for example a refrigerator or similar cabinet, including a panel supporting articles and a frame or part of a frame gripping the panel by its actual surrounding part, the frame configured to allow the shelving unit to be mounted in the chassis of the cabinet. At least one securing member for the panel is provided, including a part that is applied against a peripheral region of the bottom face of the panel in a position of use, and at least one fixing mechanism on the frame complementing a mechanism borne by the bottom face of the actual surround of the frame.Type: ApplicationFiled: March 25, 2009Publication date: January 6, 2011Applicant: SAINT-GOBAIN GLASS FRANCEInventor: Eric Escalettes
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Patent number: 7856718Abstract: The present invention relates to a method of manufacturing a screen cylinder, and a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp suspensions of the pulp and paper making industry, or other similar suspensions. The present invention relates more particularly to a screen cylinder formed from a plurality of screen wires leaving screening slots therebetween, and circular support elements. The support elements include openings/grooves for installation of the screen wires therein, so that at least one of the support rings is thermally deformed and clamps the screen wires in the openings/grooves of the rings.Type: GrantFiled: July 12, 2005Date of Patent: December 28, 2010Assignee: Advanced Fiber Technologies (AFT TRUST)Inventor: Aku Asikainen
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Publication number: 20100319224Abstract: The present invention relates to a wear shoe for use with utility equipment comprising a unitary housing having therein at least one cavity containing a wear resistant insert bound within the unitary housing and methods for making the same. Most preferably, the wear resistant insert is a ceramic material.Type: ApplicationFiled: June 12, 2010Publication date: December 23, 2010Inventor: Syamal K. Ghosh
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Patent number: 7845075Abstract: A camshaft has at least two completely machined individual cams fixedly mounted on a shaft in predetermined angular positions. The shaft includes an outside shaft and an inside shaft arranged concentrically in the former, and is to be manufactured in such a way that remachining of the joined camshaft is not necessary. This is by combining the individual cams even before they are mounted on a shaft and joining them to this shaft to form a machining module, such that the individual cams are combined in their mutual arrangement in relation to one another in which the cams are to be mounted on the finished camshaft. The final machining of the cams is performed within this machining nodule. When the cams are completely machined in this way, the cams are joined to the shaft of the camshaft within the machining module. This ensures that the desired mutual arrangement is maintained, i.e., that remachining is not necessary.Type: GrantFiled: July 15, 2005Date of Patent: December 7, 2010Assignee: Mahle Ventiltrieb GmbHInventors: Oliver Fritz, Tilo Hentschel, Hermann Hoffmann, Martin Lechner
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Publication number: 20100299907Abstract: Systems and methods for creating assemblies are described. One method described comprises providing a first element at a first temperature, providing a second element at a second temperature lower than the first temperature, coupling the first and second elements to create an assembly, and changing the first temperature to a third temperature, thereby preloading and interlocking the assembly. The first element comprises a first dimension at the first temperature. The second element comprises a second dimension lesser than the first dimension at the second temperature. The first element comprises a third dimension at the third temperature lesser than the first dimension.Type: ApplicationFiled: August 9, 2010Publication date: December 2, 2010Applicant: University of North Carolina at CharlotteInventors: Matthew A. Davies, Kevin Scott Smith
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Patent number: 7841060Abstract: A method for joining components comprises locating a region, such as an end region 24, of a shape memory alloy (SMA) material component 10 adjacent to a further component 12, and generating localized plastic deformation of the aforesaid region to create a joint between the components 10, 12. The localized plastic deformation of the shape memory alloy material component 10 is preferably generated by applying a shock load to the shape memory alloy material component 10.Type: GrantFiled: October 16, 2006Date of Patent: November 30, 2010Assignee: Rolls-Royce plcInventors: Daniel Clark, John R Webster
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Patent number: 7818986Abstract: A manufacturing method includes a first step of performing swage autofrettage on an object; a second step of heat soaking the object; and a third step of performing hydraulic autofrettage on the object. The second and third steps may be repeated one or more times. A final step may be heat soaking the object. The object may be, for example, a pressure vessel or gun barrel.Type: GrantFiled: May 21, 2008Date of Patent: October 26, 2010Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Anthony P. Parker, Edward Troiano, John H. Underwood
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Patent number: 7818866Abstract: A reinforced plastic foam cup including a body which defines an open top end and a closed bottom end, wherein the top end has a greater diameter than the bottom end. The body includes a reinforced tapered side wall that extends from the bottom end to the top end. A substantial portion of the reinforced tapered side wall includes a plastic foam layer, a pressure sensitive adhesive layer and a rigid material layer. Such reinforced plastic foam cup provides an improved tactile feel and enhanced insulation and rigidity properties.Type: GrantFiled: September 7, 2006Date of Patent: October 26, 2010Assignee: Prairie Packaging, Inc.Inventors: Robert W. Hollis, Dimitri Stamatiou
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Publication number: 20100264645Abstract: A method and apparatus for restraining plastic pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline is shown featuring an improved restraining and sealing mechanism. The restraining and sealing mechanism includes a circumferential housing and a companion sealing ring which are received within a mating groove provided in the belled end of a female pipe. The circumferential housing has an interior region which contains a gripping ring insert. The sealing ring and housing are integrally located within a belled pipe end during belling operations. Either the exterior of the gripping ring or the interior of the housing is provided with a low friction coating.Type: ApplicationFiled: November 23, 2009Publication date: October 21, 2010Applicant: S & B Technical Products, Inc.Inventors: Jim Jones, Mark Weih
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Patent number: 7814802Abstract: A method is disclosed for producing a connection between a measuring tube and at least one flange, e.g., in the case of a Coriolis mass flowmeter. In order to ensure reliable connection of the components in this case, the measuring tube can be inserted at one end over a portion through a flange bore, such that it projects out of the bore on the other side, and that the projecting end be flared out over the sealing face of the flange.Type: GrantFiled: August 1, 2007Date of Patent: October 19, 2010Assignee: ABB Patent GmbHInventors: Reinhard Steinberg, Lothar Deppe, Wolfgang Waldi, Frank Kassubek, Steffen Keller, Jörg Gebhardt, René Friedrichs, Robert Huber
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Publication number: 20100242254Abstract: A method of crimping a stent to a support element is disclosed, the method comprising: positioning a polymeric stent around a support element; heating the stent, wherein the heated stent is above ambient temperature; and allowing the heated stent to radially contract onto the support element, wherein the heated stent radially contracts at least partially due to heating the stent.Type: ApplicationFiled: June 11, 2010Publication date: September 30, 2010Inventors: Bin Huang, Patrick Wu
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Patent number: 7802428Abstract: A subassembly of a system including an exhaust gas turbocharger system coupled with an internal combustion engine exhaust system, includes first and second components secured to each other, wherein the components are heated to an operational temperature by engine exhaust gases during engine operation. The components are secured to each other by or with a “low-melt material” whose melting temperature is less than the operational temperature, such that the low-melt material melts or at least loses its securing and/or positioning functionality upon operation of the engine and turbocharger system, and thus no longer performs any fastening or positioning function for the components. In some embodiments, temporary fasteners made of or including the low-melt material are employed for temporarily securing and positioning the components.Type: GrantFiled: October 4, 2007Date of Patent: September 28, 2010Assignee: Honeywell International, Inc.Inventors: Jean-Luc Perrin, Arthur Jeanson, Marylene Ruffinoni
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Publication number: 20100241215Abstract: A stent (10) is provided with a plurality of stent rings (12) formed of a plurality of interconnected struts (14). Adjacent stent rings (12) are coupled to one another by a plurality of tie bars (16). Within each tie bar (16) there is provided a hinge (36) which facilitates the curving of the stent (10) in its longitudinal direction and minimises the generation of returning force to a non-curved configuration by the stent (10). The hinge could, for example, be formed by heat treating a portion of the tie bar (16). This arrangement is particularly suitable for stents or other medical devices intended to be placed in delicate vessels, such as cerebral vessels.Type: ApplicationFiled: March 23, 2010Publication date: September 23, 2010Applicants: William Cook Europe ApS, Cook IncorporatedInventors: Palle Munk Hansen, Per Hendriksen
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Publication number: 20100236829Abstract: Apparatus and methods for using the drilling apparatus to increase the linear direction of the drilling action are described. The drilling apparatus contains a drill rod that is fitted with a reinforcing sleeve that is located on the drill rod as close as possible to the drill bit. The outer diameter of the sleeve is configured to be substantially the same as the bit diameter and, if necessary, just slightly smaller than the bit diameter. The sleeve reinforces the drill rod next to the drill bit and reduces and substantially eliminates the gap between the drill rod and the borehole in the vicinity of the drill bit. The sleeve, therefore, reduces the wobble of the drill bit in the borehole and reduces the drill bit from wavering from a straight linear drilling direction. The reinforcing sleeve can contain helical channels for moving material displaced by the drilling process away from the drill bit.Type: ApplicationFiled: June 22, 2007Publication date: September 23, 2010Applicant: BOART LONGYEAR GLOBAL HOLDCO INC.Inventor: Jing James Yao
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Publication number: 20100224006Abstract: This invention provides an internal stress actuated micro- or nano-machine for measuring mechanical and/or electrical properties, e.g. traction measurement, compression measurement or shear measurement, on micro-scale and nano-scale films or multi-layers of materials such as metallic materials, carbon-based materials and silicon-base materials. The device of the invention has applications in materials production industry, as well as in micro-electronics and for surface treatments and functionalization.Type: ApplicationFiled: February 14, 2007Publication date: September 9, 2010Inventors: Thomas Pardoen, Damien Fabrégue, Jean-Pierre Raskin, Nicolas André, Michaël Coulombier
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Patent number: 7788783Abstract: The present invention provides a method for manufacturing a walk-in bathtub. The method involves heating an acrylic sheet, wherein the outer perimeter of the sheet is heated to a higher temperature than the center of the sheet. The heated acrylic sheet is then placed over a vacuum mold that is shaped like a bathtub, including a seat and a foot well, and drawn into the mold by the vacuum. Vacuum pressure is manually reduced when the acrylic reaches the top of the seat in the mold, and the vacuum is shut off when the acrylic is approximately two inches from the bottom of the foot well of the mold. The acrylic is removed from the mold, reinforced with fiberglass and secured to a support frame. A door space is cut in the side of the tub and a pre-hung door assembly is then installed in the door threshold.Type: GrantFiled: October 19, 2006Date of Patent: September 7, 2010Assignee: Safety Tubs, LLCInventor: Andre J. Neidich
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Patent number: 7784165Abstract: A method of forming a panel constrained layer damper treatment from a laminate, having a panel and a visco-elastic layer attached thereto, by forming a panel constrained layer damper from the laminate to a predetermined shape is provided. Additionally, the method of the present invention includes attaching the panel constrained layer damper to a substrate to form the panel constrained layer damper treatment. The method may also include subjecting the panel constrained layer damper to heat energy to bond the visco-elastic layer to the substrate. In addition, various methods of attaching the panel constrained layer damper to the substrate are provided.Type: GrantFiled: April 19, 2006Date of Patent: August 31, 2010Assignee: Material Science CorporationInventors: Hong Xiao, Richard Swanson
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Patent number: 7774916Abstract: A new shrink fitting method including deformation is disclosed, in which a high bonding force can be obtained without accurate mechanical process such as forming an insertion body having an outer diameter greater than an inner diameter of an object for receiving the insertion body. The shrink fitting method comprises preparing a pipe and a rod material whose inner and outer diameters are different from each other; bonding the pipe and the rod material to each other in a state that the pipe or the rod material is deformed by heating; deforming the pipe to allow the inner diameter of the pipe to be equal to the outer diameter of the rod material; and cooling the bonded pipe and rod material. The shrink fitting method can be widely used for various mechanical parts.Type: GrantFiled: November 1, 2006Date of Patent: August 17, 2010Assignee: Korea Institute of Science and TechnologyInventors: Kwang-Koo Jee, Jun-Hyun Han, Yoon-Bae Kim
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Patent number: 7770278Abstract: Systems and methods for creating assemblies are described. One method described comprises providing a first element at a first temperature, providing a second element at a second temperature lower than the first temperature, coupling the first and second elements to create an assembly, and changing the first temperature to a third temperature, thereby preloading and interlocking the assembly. The first element comprises a first dimension at the first temperature. The second element comprises a second dimension lesser than the first dimension at the second temperature. The first element comprises a third dimension at the third temperature lesser than the first dimension.Type: GrantFiled: March 23, 2004Date of Patent: August 10, 2010Assignee: University of North Carolina at CharlotteInventors: Matthew A. Davies, Kevin Scott Smith
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Patent number: 7761969Abstract: Methods for making refractory crucibles capable of managing thermal stresses and suitable for melting highly reactive alloys, the method involving providing a crucible having at least a facecoat and a backing, heating at least one retaining ring, applying the at least one retaining ring about at least a portion of the backing of the crucible; and allowing the at least one retaining ring to cool and shrink-fit about the crucible.Type: GrantFiled: November 30, 2007Date of Patent: July 27, 2010Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Michael Francis Xavier Gigliotti, Mohamed Rahmane, Thomas Joseph Kelly, Michael James Weimer, Sairam Sundaram
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Patent number: 7761968Abstract: A method of crimping a stent to a support element is disclosed, the method comprising: positioning a polymeric stent around a support element; heating the stent, wherein the heated stent is above ambient temperature; and allowing the heated stent to radially contract onto the support element, wherein the heated stent radially contracts at least partially due to heating the stent.Type: GrantFiled: May 25, 2006Date of Patent: July 27, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Bin Huang, Patrick Wu
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Publication number: 20100181189Abstract: A scaffold holding one or more ion-conductive ceramic membranes for use in an electrochemical cell is described. Generally, the scaffold includes a thermoplastic plate defining one or more orifices. Each orifice is typically defined by a first, second, and third aperture, wherein the second aperture is disposed between the first and third apertures. The diameter of the second aperture can be larger than the diameters of the first and third apertures. While at an operating temperature the diameter of the ceramic membrane is larger than the diameters of the first and third apertures, heating the scaffold to a sufficient temperature and for a sufficient time causes the third aperture's diameter to become larger than the membrane's diameter. Thus, heating the scaffold may allow the membrane to be inserted into the orifice. Cooling the scaffold can then cause the third aperture's diameter to shrink and trap the membrane within the orifice.Type: ApplicationFiled: January 19, 2010Publication date: July 22, 2010Inventors: Scott R. SUAREZ, Steven Matthew Quist
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Patent number: 7758289Abstract: To compensate for tolerances and diameter differences during the chucking of a tool shank (15) in a tool holder (1) of the shrink-fit chuck type, a diameter-compensating bush (17) is provided. The diameter-compensating bush (17) has an outer sleeve (19) having a tapered inner circumferential surface (25) and an inner sleeve (21) arranged coaxially therein and having a tapered outer circumferential surface (27). Once the diameter-compensating bush (17) has been put onto the tool shank (15) and the inner sleeve (21) has been drawn into the outer sleeve (19), for example by means of a ring nut (35), for the diameter compensation, the outer sleeve (19) is thermally shrunk in place in the locating section (9) of the tool holder (1). In this way, rotary tools whose tool shank (15) does not have a diameter corresponding to the diameter or the tolerance requirements of the tool holder (1) can be chucked in a tool holder (1), for example, of the shrink-fit chuck type.Type: GrantFiled: May 30, 2005Date of Patent: July 20, 2010Assignee: Franz Haimer Maschinenbau KGInventors: Franz Haimer, Josef Haimer
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Publication number: 20100155147Abstract: A shrink-fit sleeve assembly comprising a bit body includes at least one sleeve port with a substantially tubular sleeve disposed therein and interferingly engaged therewith. The sleeve port includes an internal surface of substantially circular cross-section, and the tubular sleeve includes an internal nozzle port and an external surface of substantially circular cross-section. A lateral dimension of an external surface is equal to or greater than a first dimension at ambient temperature. A nozzle assembly and a method of manufacturing or retrofitting a drill bit are also disclosed.Type: ApplicationFiled: March 10, 2010Publication date: June 24, 2010Applicant: BAKER HUGHES INCORPORATEDInventors: James Andy Oxford, John H. Stevens, James L. Duggan, Redd H. Smith
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Patent number: 7739794Abstract: A method includes shrink fitting a ring member about a railroad wheel body and metallurically bonding the ring member to the railroad wheel body. A wheel assembly includes an inner portion obtained from a worn railroad wheel, a ring member disposed about the inner portion, and suitable electroplating material disposed on at least one of the faying surfaces. The wheel assembly may be heated under suitable conditions to provide diffusion bonding across interfacing faying surfaces to produce an integral wheel structure. Appropriate quenching, tempering, and finishing processes may be utilized to obtain desired properties. An article formed thereby includes an inner body portion obtained from a worn railroad wheel and a metallurically bonded outer circumferential portion. The outer portion may comprise a composition selected for desired wear characteristics.Type: GrantFiled: February 29, 2008Date of Patent: June 22, 2010Assignee: General Electric CompanyInventor: Thomas Edward Mantkowski
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Patent number: 7735207Abstract: A process for making plastic-lined metallic pipes for conveying liquid or gas includes the steps of heating a metallic pipe evenly to a first temperature; cooling a plastic pipe evenly to a second temperature; inserting the plastic pipe into the metallic pipe to constitute an inner sleeve; drawing the metallic pipe from its two ends; and cooling the sleeved pipe to a storage temperature. The pipe includes a continuous inner plastic sleeve and an outer seamless metallic pipe. The outer diameter of the plastic sleeve is circumferentially melt-bonded to the inner diameter of the outer pipe. The plastic sleeve constitutes an uninterrupted lining for the metallic pipe.Type: GrantFiled: February 7, 2009Date of Patent: June 15, 2010Inventor: Anna Kui Gey
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Patent number: 7726940Abstract: Assembly of segmented seals can be problematic in areas of limited space for an introductory tapered mandrel and where there are the problems with damage to the seal surfaces 23, 24. By the present method and arrangement, a seal formed from segments 22 is expanded to an expanded state and then retained at that state by the use of a sacrificial material 26 in the gaps 25 between the segments 22 opened by expansion. The sacrificial material 26 is typically a low melting temperature wax and so is removed when the seal arrangement reaches its operating temperature.Type: GrantFiled: August 4, 2006Date of Patent: June 1, 2010Assignee: Rolls-Royce PLCInventor: Guy David Snowsill
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Patent number: 7725999Abstract: A feed-through subassembly includes a plurality of wires. The feed-through subassembly is positioned in a holding device such that the plurality of wires are pointed in an upward direction. A protective tube is placed over the plurality of wires. Heat is applied to the protective tube. A portion or all of the protective tube is shrunk.Type: GrantFiled: July 29, 2005Date of Patent: June 1, 2010Assignee: Medtronic, Inc.Inventors: Thomas J. Moyers, II, Shauna L. Morones
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Publication number: 20100126999Abstract: One exemplary embodiment of a high pressure tank and a method thereof includes providing a liner of the high pressure tank. A liner having at least one open end with a first inner diameter and a first outer diameter. The method also including providing a cap having a second outer diameter which is greater than the first inner diameter. The method further includes providing a collar having a second inner diameter which is less than the first outer diameter. The liner is brought to a first temperature, the cap is brought to a second temperature which is less than the first temperature, and the collar is brought to a third temperature which is greater than the first temperature. At least a portion of the cap is placed inside the open end and at least a portion of the collar is placed over the open end.Type: ApplicationFiled: November 21, 2008Publication date: May 27, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Richard M. Kleber, Hamid G. Kia, John E. Carsley
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Patent number: 7721443Abstract: Method and apparatus for providing a hollow, elongated construction element, for example for use as a vehicle front axle. The method includes (1) directing a first blank through a furnace (2) for heating the blank to a working temperature. The blank is directed between a pair of rollers (3, 4) having profiled surfaces, the blank being preformed in one or more steps to form an intermediate product having a predetermined profile along its longitudinal extent. The blank is fed to a forging press having a number of cooperating die pads, the blank being worked in a plurality of steps (5, 8, 11) to form a substantially finished product, having a cross section substantially in the form of a hat profile of predetermined varying height, width and material thickness along its length. A second blank (14), having essentially the same profile as the hat profile of the first blank in the dividing plane of the cooperating die pads, is placed in connection with the hat profile.Type: GrantFiled: September 23, 2003Date of Patent: May 25, 2010Assignee: International Rectifier CorporationInventors: Stefan Preijert, Leon Fuks
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Patent number: 7722339Abstract: There is provided a high performance compressor that causes no possibility of mixing foreign materials or of leaking refrigerant, that reduces strain otherwise generated in a compressor mechanism section and that is highly reliable even for a long-term use. The compressor mechanism section in which pairs of prepared holes are formed at a plurality of points on an outer peripheral face thereof is disposed within the closed container. Caulking punches are positioned to positions corresponding to those of the prepared holes and a region including the corresponding positions is heated. Then, when the punches are driven by pressing machines, portions of the container wall of the closed container plastically deform as the convex portions and enter the prepared holes. When the container wall cools down, the pair of convex portions of the container clamps a part between the prepared holes.Type: GrantFiled: May 7, 2007Date of Patent: May 25, 2010Assignee: Mitsubishi Electric CorporationInventors: Koichi Sato, Takeshi Fushiki, Taro Kato, Toshiaki Iwasaki, Masaki Okada, Shoichiro Hara
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Patent number: 7690097Abstract: In some embodiments, methods for securing a cylindrical screen jacket to a base pipe include heating the screen jacket to expand it so that its inner diameter becomes greater than the outer diameter of the base pipe, positioning the base pipe at least partially within the screen jacket and allowing the screen jacket to cool and contract, engaging the base pipe.Type: GrantFiled: December 22, 2006Date of Patent: April 6, 2010Assignee: BJ Services CompanyInventors: Carl Cooper, Phong Vu
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Publication number: 20100061677Abstract: A fiber optic sensor employs at least two flexural discs that are spaced apart from one another along a central axis. A fiber optic coil is affixed to at least one of the flexural discs. A proof mass is disposed between the flexural discs. A first stop member is disposed between the proof mass and one flexural disc. A second stop member is disposed between the proof mass and the other flexural disc. The first and second stop members are sized to provide space between the proof mass and the corresponding flexural disc to allow for normal motion of the flexural discs, while interfering with movement of the flexural discs to prohibit unwanted extreme motion. The fiber optic sensor can be used for OTDR measurements of acceleration for real-time oilfield monitoring applications as well as other fiber-based interferometric measurement applications. A coupling structure preferably couples the outer edges of the flexible disks, the mass being attached to the coupling structure.Type: ApplicationFiled: July 12, 2007Publication date: March 11, 2010Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventor: Dominic Brady
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Patent number: 7673379Abstract: A method of producing a stent-balloon assembly is disclosed which includes providing a stent having a polymeric component; exposing the stent to a relative humidity of 20% to 100%; and crimping the stent on a balloon of a catheter assembly. The polymeric component could be at least part of the material from which the stent is made or could be a constituent of a coating for the stent, such as a drug delivery coating. In lieu of or in addition to the application of humidity, a plasticizing agent can be applied to the polymeric component. A crimping device is also disclosed which allows the stent to be exposed to humidity during the crimping process.Type: GrantFiled: May 11, 2007Date of Patent: March 9, 2010Assignee: Abbott Cardiovascular Systems Inc.Inventor: Stephen Dirk Pacetti
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Publication number: 20100051610Abstract: An apparatus is disclosed for accurately positioning a tool within a shrink-fit tool holder. The apparatus includes a combined tool presetter and heat-shrink device. The tool assembly is placed in a precision rotating spindle that is able to travel into a contained location for cooling of the tool assembly subsequent to heating the tool assembly through induction. The apparatus is adapted such that the precision rotating spindle precisely returns to a home measuring position subsequent to cooling for final measurement of the tool assembly. The presetter allows for measurements related to the tool assembly both prior to and subsequent to the shrink-fitting process.Type: ApplicationFiled: August 27, 2008Publication date: March 4, 2010Applicant: Parlec, Inc.Inventors: Victor Wittels, Matthew Hoyt
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Patent number: 7651137Abstract: A pipeline (20) that lies primarily in the sea and that is formed of multiple steel pipe sections connected in tandem at pipe joints, includes a protective coating around the pipe sections and around the pipe joints. Each pipe section is first covered, at an onshore facility, by an initial coating (30, 32) that extends along at least 80% of the pipe section length while leaving its ends uncovered, to leave gripping areas (40, 42) where the steel of the pipe is uncovered so the pipe can be clamped by tools such as those with steel jaws to position and slide it axially, or turn it, or prevent it from turning. After a pair of pipe sections are connected, a completion coating (50) is applied around the pipe joint to leave the pipeline with a coating around all of it.Type: GrantFiled: February 27, 2007Date of Patent: January 26, 2010Assignee: Single Buoy Moorings, Inc.Inventors: Jack Pollack, David C. Riggs
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Patent number: 7644745Abstract: A target assembly including a plurality of target tiles bonded to a backing plate by adhesive, for example of indium or conductive polymer, filled into recesses in the backing plate formed beneath each of the target tiles. A sole peripheral recess formed as a rectangular close band may be formed inside the tile periphery. Additional recesses may be formed inside the peripheral recess, preferably symmetrically arranged about perpendicular bisectors of rectangular tiles. The depth and width of the recesses may be varied to control the amount of stress and the stress direction.Type: GrantFiled: June 6, 2005Date of Patent: January 12, 2010Assignee: Applied Materials, Inc.Inventors: Hien-Minh Huu Le, Akihiro Hosokawa
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Publication number: 20090314890Abstract: A nose cone formed from a shape memory alloy (SMA) having a recoverable strain of at least 2% collapses about the dome for storage, deploys at launch to protect the sensor dome and reduce drag during atmospheric flight and is shed to allow sensing for terminal maneuvers. The SMA is shape-set at elevated temperatures in its Austenite phase with a memorized shape having a radius of curvature greater than that of the sensor dome to reduce aerodynamic drag. The temperature is reduced and the SMA collapsed to conform to the curvature of the sensor dome within the recoverable strain for storage. A first mechanism is configured to return the collapsed SMA to its memorized shape at launch or prior to going supersonic. In one embodiment, the SMA is stored below its Martensite finish temperature in a temperature-induced Martensite phase in which case the mechanism heats the SMA above the Austenite finish temperature to return the material to its memorized shape.Type: ApplicationFiled: June 18, 2008Publication date: December 24, 2009Inventors: Frederick B. Koehler, Ward D. Lyman, Terry M. Sanderson
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Patent number: RE42416Abstract: A method of removing stators from tubular stator housings involving subjecting a tubular stator housing having an interior surface to which a worn stator is adhered by adhesive to cryogenic refrigeration until the stator shrinks and pulls away from the interior surface of the tubular stator housing.Type: GrantFiled: December 13, 2007Date of Patent: June 7, 2011Inventor: John Russell McKay