Patents by Inventor Dennis Joseph Dalpe
Dennis Joseph Dalpe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9966578Abstract: An article is presented. The article includes a seal ring configured for use in an energy storage device, the seal ring comprising a first portion and a second portion that each include an alumina-based cermet, that comprises a sufficient amount of metal or metal alloy to be weldable, and the cermet comprises a ceramic material selected from a group consisting of silica, yttria, and ytterbia, and the seal ring further comprises a third region intervening between the first portion and the second portion that is sufficiently electrically insulative and of sufficient thickness to electrically isolate the first portion from the second portion.Type: GrantFiled: September 3, 2015Date of Patent: May 8, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Craig Stringer, Dennis Joseph Dalpe, James Scott Vartuli, James Anthony Brewer
-
Publication number: 20150380696Abstract: An article is presented. The article includes a seal ring configured for use in an energy storage device, the seal ring comprising a first portion and a second portion that each include an alumina-based cermet, that comprises a sufficient amount of metal or metal alloy to be weldable, and the cermet comprises a ceramic material selected from a group consisting of silica, yttria, and ytterbia, and the seal ring further comprises a third region intervening between the first portion and the second portion that is sufficiently electrically insulative and of sufficient thickness to electrically isolate the first portion from the second portion.Type: ApplicationFiled: September 3, 2015Publication date: December 31, 2015Inventors: Craig Stringer, Dennis Joseph Dalpe, James Scott Vartuli, James Anthony Brewer
-
Patent number: 9166214Abstract: An article includes a seal ring for an energy storage device. The seal ring has a weldable first portion and a weldable second portion. The first and second portions are electrically isolatable from each other by an electrically insulating third portion.Type: GrantFiled: August 19, 2008Date of Patent: October 20, 2015Assignee: General Electric CompanyInventors: Craig Stringer, Charles Dominic Iacovangelo, Dennis Joseph Dalpe, James Scott Vartuli, James Anthony Brewer
-
Patent number: 8299709Abstract: A lamp is provided with an axially and radially graded structure to reduce the possibility of thermal stresses, cracks, and other defects in the lamp. In one embodiment, a system includes a ceramic lamp having a ceramic arc envelope and an end structure coupled to the ceramic arc envelope, wherein the end structure is graded both axially and radially into a plurality of regions. In another embodiment, a system includes a lamp having a layered end structure with a plurality of layers disposed one over another and that extend in both axial and radial directions relative to an axis of the lamp, wherein the plurality of layers include different materials having different coefficients of thermal expansion, Poisson's ratios, or elastic moduli, or a combination thereof.Type: GrantFiled: February 5, 2007Date of Patent: October 30, 2012Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Dennis Joseph Dalpe, Bruce Alan Knudsen, Mohamed Rahmane, Svetlana Selezneva, James Scott Vartuli, James Anthony Brewer
-
Patent number: 7497986Abstract: An apparatus for incorporating an elemental component in gaseous form into a molten metal is described. The apparatus comprises a container for holding the molten metal; means for cooling the container; heating means for maintaining the metal in the molten state; and a canopy which covers the top of the container. The apparatus also includes at least one aperture through which a desired gaseous material can be fed from a gas source. A related method for incorporating an elemental component in gaseous form into a molten metal is also described. The method includes the step of providing the metal in a container apparatus as described above, and feeding the gaseous elemental component from a gas source into the container, while maintaining the metal in the molten state. Articles prepared by such a method are also disclosed, as well as niobium base composites which comprise niobium, silicon, and nitrogen.Type: GrantFiled: September 1, 2004Date of Patent: March 3, 2009Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Dennis Joseph Dalpe
-
Patent number: 7488443Abstract: An electrically conducting cermet comprises at least one transition metal element dispersed in a matrix of at least one refractory oxide selected from the group consisting of yttria, alumina, garnet, magnesium aluminum oxide, and combinations; wherein an amount of the at least one transition metal element is less than 15 volume percent of the total volume of the cermet. A device comprises the aforementioned electrically conducting cermet.Type: GrantFiled: January 10, 2008Date of Patent: February 10, 2009Assignee: General Electric CompanyInventors: Bernard Patrick Bewley, Bruce Alan Knudsen, James Anthony Brewer, James Scott Vartuli, Dennis Joseph Dalpe, Mohamed Rahmane
-
Publication number: 20090011331Abstract: An article includes a seal ring for an energy storage device. The seal ring has a weldable first portion and a weldable second portion. The first and second portions are electrically isolatable from each other by an electrically insulating third portion.Type: ApplicationFiled: August 19, 2008Publication date: January 8, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Craig Stringer, Charles Dominic Iacovangelo, Dennis Joseph Dalpe, James Scott Vartuli, James Anthony Brewer
-
Publication number: 20080185963Abstract: A lamp is provided with an axially and radially graded structure to reduce the possibility of thermal stresses, cracks, and other defects in the lamp. In one embodiment, a system includes a ceramic lamp having a ceramic arc envelope and an end structure coupled to the ceramic arc envelope, wherein the end structure is graded both axially and radially into a plurality of regions. In another embodiment, a system includes a lamp having a layered end structure with a plurality of layers disposed one over another and that extend in both axial and radial directions relative to an axis of the lamp, wherein the plurality of layers include different materials having different coefficients of thermal expansion, Poisson's ratios, or elastic moduli, or a combination thereof,.Type: ApplicationFiled: February 5, 2007Publication date: August 7, 2008Inventors: Bernard Patrick Bewlay, Dennis Joseph Dalpe, Bruce Alan Knudsen, Mohamed Rahmane, Svetlana Selezneva, James Scott Vartuli, James Anthony Brewer
-
Patent number: 7329979Abstract: An electrically conducting cermet comprises at least one transition metal element dispersed in a matrix of at least one refractory oxide selected from the group consisting of yttria, alumina, garnet, magnesium aluminum oxide, and combinations; wherein an amount of the at least one transition metal element is less than 15 volume percent of the total volume of the cermet. A device comprises the aforementioned electrically conducting cermet.Type: GrantFiled: July 15, 2004Date of Patent: February 12, 2008Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Bruce Alan Knudsen, James Anthony Brewer, James Scott Vartuli, Dennis Joseph Dalpe, Mohamed Rahmane
-
Patent number: 6464551Abstract: A filament comprises a generally thin metal component, such as a sheet, ribbon, or foil. The filament comprises at least one emitter, at least one current-condensing structure and a tab on each end of the at least one emitter. Each tab is connectable to a support system, comprising for example a lead and attachment post. When a current is passed through the filament, the current-condensing structure establishes current flow through the filament resulting in a desired temperature distribution across the emitter, for example a substantially uniform temperature distribution. A predictive tool for determining a geometry of a filament to provide a desired temperature distribution is set forth. The filament may be curved, and methods and systems for providing a curved filament are also provided. Attachment systems are further disclosed for attaching an emitter to a support structure.Type: GrantFiled: May 31, 2000Date of Patent: October 15, 2002Assignee: General Electric CompanyInventors: Don Mark Lipkin, Carl Edward Erikson, Bernard Patrick Bewlay, Dennis Joseph Dalpe
-
Patent number: 6419758Abstract: An x-ray cathode filament comprises a recrystallized coiled wire that comprises rhenium in a range from about 3 to about 7 weight percent with the balance being tungsten that is doped with potassium at a concentration in a range from about 30 to about 110 PPM. The filament comprises interlocked grains of an average size greater than about 20 microns.Type: GrantFiled: September 10, 1999Date of Patent: July 16, 2002Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Dennis Joseph Dalpe, Bruce Alan Knudsen
-
Patent number: 6373922Abstract: A method and apparatus are provided for adjusting a filament set height in a cathode of an x-ray tube. The method for adjusting a filament set height of a cathode comprises providing a cathode cup of an x-ray tube, the cathode cup comprising at least one bore extending therethrough; inserting a filament post through at least one bore such that the filament set height is below a desired filament set height; measuring an actual filament set height that results from the step of inserting; determining a filament set height adjustment distance in which the filament set height adjustment is generally equal to a difference between the actual filament set height and the desired filament set height; contacting an end of the filament lead with an adjustment tool; and moving the adjustment tool a distance substantially equal to the filament set height adjustment distance. Therefore, the filament is positioned at the predetermined filament set height.Type: GrantFiled: May 18, 2000Date of Patent: April 16, 2002Assignee: General Electric CompanyInventors: Dennis Joseph Dalpe, Elena Rozier Gearing, Don Mark Lipkin
-
Patent number: 6259193Abstract: A filament comprises a generally thin metal component, such as a sheet, ribbon, or foil. The filament comprises at least one emitter, at least one current-condensing structure and a tab on each end of the at least one emitter. Each tab is connectable to a support system, comprising for example a lead and attachment post. When a current is passed through the filament, the current-condensing structure establishes current flow through the filament resulting in a desired temperature distribution across the emitter, for example a substantially uniform temperature distribution. A predictive tool for determining a geometry of a filament to provide a desired temperature distribution is set forth. The filament may be curved, and methods and systems for providing a curved filament are also provided. Attachment systems are further disclosed for attaching an emitter to a support structure.Type: GrantFiled: June 8, 1998Date of Patent: July 10, 2001Assignee: General Electric CompanyInventors: Don Mark Lipkin, Carl Edward Erikson, Bernard Patrick Bewlay, Dennis Joseph Dalpe
-
Patent number: 6210478Abstract: A method and apparatus for locally and successively melting a material by induction heating using a horizontal floating-zone crucible to refine and/or analyze the material. An electromagnetic field is generated to create a localized molten zone within the material that is at least partially levitated within the crucible. The crucible has an upper peripheral opening so that an upper portion of the molten zone is generally at a higher temperature than the lower portion of the molten zone adjacent the crucible wall. As a result, insoluble inclusions within the material separate and float to the upper portion of the molten zone. The molten zone may be translated longitudinally through the material to drive the inclusions toward one end of the material. The process can be carried out to refine or characterize the material, or to determine the solidus and liquidus temperatures of the material.Type: GrantFiled: July 9, 1999Date of Patent: April 3, 2001Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Don Mark Lipkin, Dennis Joseph Dalpe
-
Patent number: 6203752Abstract: A furnace component having a tungsten-based substrate whose surface is protected by a rhenium-based layer in order to render the component less reactive to quartz, glass and other forms of silica. The layer preferably consists essentially of rhenium or rhenium with alloying additions of tungsten. The substrate may be formed of concentric layers of different tungsten-based alloys in order to tailor the physical and mechanical properties of the component. A preferred method of forming the rhenium layer is to wrap the substrate with a rhenium-based wire, and then heat the wire and substrate to sinter and bond the wire to the substrate. Alternatively, the substrate and rhenium layer can be formed by isostatic pressing. Both methods are performed so that the substrate and layer have densities of at least about 96% of their respective theoretical densities.Type: GrantFiled: May 16, 2000Date of Patent: March 20, 2001Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Dennis Joseph Dalpe
-
Patent number: 6162552Abstract: A furnace component having a tungsten-based substrate whose surface is protected by a rhenium-based layer in order to render the component less reactive to quartz, glass and other forms of silica. The layer preferably consists essentially of rhenium or rhenium with alloying additions of tungsten. The substrate may be formed of concentric layers of different tungsten-based alloys in order to tailor the physical and mechanical properties of the component. A preferred method of forming the rhenium layer is to wrap the substrate with a rhenium-based wire, and then heat the wire and substrate to sinter and bond the wire to the substrate. Alternatively, the substrate and rhenium layer can be formed by isostatic pressing. Both methods are performed so that the substrate and layer have densities of at least about 96% of their respective theoretical densities.Type: GrantFiled: December 3, 1998Date of Patent: December 19, 2000Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Dennis Joseph Dalpe
-
Patent number: 6059015Abstract: A method for directional solidification (DS) of a molten material, and an apparatus therefor. The method generally entails the use of a container having a base and peripheral wall that define an interior of the container, an induction coil for heating the contents of the container and generating an electromagnetic field, and means for controllably separating the container from the heating means and the electromagnetic field, such as by withdrawing the container from the heating means and electromagnetic field. Using such an apparatus, a material is heated within the container to yield a melt that is substantially prevented from contacting the wall of the container as a result of being at least partially levitated by the electromagnetic field. The container is then separated, e.g.Type: GrantFiled: June 26, 1997Date of Patent: May 9, 2000Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Dennis Joseph Dalpe
-
Patent number: 5778960Abstract: An extension is formed directly on the end of an article by dipping the end into a molten bath of an alloy, followed by withdrawal of the end at a rate sufficient to form the extension. Extensions formed have a microstructure that is continuous and compatible with that of the article. Such microstructures may include epitaxial growth of the extension onto the microstructure of the article. The method establishes a temperature gradient within the article that may be controlled by heating and/or cooling the article during the practice of the method.Type: GrantFiled: October 2, 1995Date of Patent: July 14, 1998Assignee: General Electric CompanyInventors: Melvin Robert Jackson, Bernard Patrick Bewlay, Dennis Joseph Dalpe, Wayne Alan Demo, Stephen Joseph Ferrigno