Patents by Inventor Cecilia A. Walsh
Cecilia A. Walsh 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).
-
Publication number: 20230349796Abstract: A microscope mounting system includes a sample holder shaped and configured to fit a particular horizontal microscope stage and fix one end of a soft material sample. A blade holder configured to position a cutting blade and connect directly or eventually to the particular microscope or a frame of the particular microscope. A load measurement device is configured to determine a load applied to the cutting blade. A precision adjustment assembly sets positioning of the cutting blade in the horizontal x-y plane and the z vertical plane such that a cutting edge of the cutting blade can be positioned at a focal point of the particular microscope. At least two grips are configured to grip a second end of the soft material sample at at least two discrete locations on opposite sides of the cutting blade when the blade contacts the soft material sample at the focal point. A tension mechanism can apply tension in the x-y plane to each of the at least two grips.Type: ApplicationFiled: April 26, 2023Publication date: November 2, 2023Inventors: Shelby Hutchens, Amy Jaye Wagoner Johnson, Jing-Chen Peng, Matthew Guerena, Marcus Schmid, Cecilia Walsh, Tyler Jacob Roberts, Chelsea Simone Davis
-
Patent number: 9029741Abstract: A surface-mountable electrical circuit protection device includes layers defining a first PPTC resistive element, a second PPTC resistive element, and at least one heat-generating electrical component such as a planar zener diode chip positioned between, and in thermal contact with, the first and second PPTC elements, such that an electrical current above a threshold level passing through the component causes the component to heat, the heat being transferred to the PPTC resistive elements and tripping at least one, and preferably both of the first or second PPTC elements to a high resistance state. A series of edge-formed terminal electrodes enable surface-mount connection of the first and second PPTC elements and the electrical component to an electrical circuit substrate, such as a printed circuit board. A method for making the device is also disclosed.Type: GrantFiled: May 22, 2012Date of Patent: May 12, 2015Assignee: Tyco Electronics CorporationInventors: Wayne Montoya, Luis A. Navarro, Cecilia A. Walsh, Adrian P. Mikolajczak
-
Publication number: 20120227229Abstract: A surface-mountable electrical circuit protection device includes layers defining a first PPTC resistive element, a second PPTC resistive element, and at least one heat-generating electrical component such as a planar zener diode chip positioned between, and in thermal contact with, the first and second PPTC elements, such that an electrical current above a threshold level passing through the component causes the component to heat, the heat being transferred to the PPTC resistive elements and tripping at least one, and preferably both of the first or second PPTC elements to a high resistance state. A series of edge-formed terminal electrodes enable surface-mount connection of the first and second PPTC elements and the electrical component to an electrical circuit substrate, such as a printed circuit board. A method for making the device is also disclosed.Type: ApplicationFiled: May 22, 2012Publication date: September 13, 2012Inventors: Wayne Montoya, Luis A. Navarro, Cecilia A. Walsh, Adrian P. Mikolajczak
-
Patent number: 8183504Abstract: A surface-mountable electrical circuit protection device includes layers defining a first PPTC resistive element, a second PPTC resistive element, and at least one heat-generating electrical component such as a planar zener diode chip positioned between, and in thermal contact with, the first and second PPTC elements, such that an electrical current above a threshold level passing through the component causes the component to heat, the heat being transferred to the PPTC resistive elements and tripping at least one, and preferably both of the first or second PPTC elements to a high resistance state. A series of edge-formed terminal electrodes enable surface-mount connection of the first and second PPTC elements and the electrical component to an electrical circuit substrate, such as a printed circuit board. A method for making the device is also disclosed.Type: GrantFiled: March 27, 2006Date of Patent: May 22, 2012Assignee: Tyco Electronics CorporationInventors: Wayne Montoya, Luis A. Navarro, Cecilia A. Walsh, Adrian P. Mikolajczak
-
Publication number: 20060215342Abstract: A surface-mountable electrical circuit protection device includes layers defining a first PPTC resistive element, a second PPTC resistive element, and at least one heat-generating electrical component such as a planar zener diode chip positioned between, and in thermal contact with, the first and second PPTC elements, such that an electrical current above a threshold level passing through the component causes the component to heat, the heat being transferred to the PPTC resistive elements and tripping at least one, and preferably both of the first or second PPTC elements to a high resistance state. A series of edge-formed terminal electrodes enable surface-mount connection of the first and second PPTC elements and the electrical component to an electrical circuit substrate, such as a printed circuit board. A method for making the device is also disclosed.Type: ApplicationFiled: March 27, 2006Publication date: September 28, 2006Inventors: Wayne Montoya, Luis Navarro, Cecilia Walsh, Adrian Mikolajczak
-
Patent number: 6987440Abstract: An electrical device in which an element composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode, the first surface having a center line average roughness Ra and a reflection density RD, the product Ra times RD being 0.5 to 1.6 ?m. The conductive polymer composition preferably exhibits PTC behavior. In a second embodiment an electrical device has an element composed of a conductive polymer composition in contact with the first surface of a metal electrode produced by providing a base metal foil having an Ra of at most 0.45 ?m and depositing material onto the base metal foil to form a first surface having a product of Ra times RD of at least 0.14 ?m. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.Type: GrantFiled: July 11, 2003Date of Patent: January 17, 2006Assignee: Tyco Electronics CorporationInventors: Paul N. Becker, Orion Jankowski, Cecilia A. Walsh
-
Patent number: 6922131Abstract: An electrical device suitable for use in digital telecommunications applications is provided. The device includes a laminar PTC element composed of a conductive polymer composition sandwiched between two metal foil electrodes. A first insulating layer which is composed of an electrically insulating flexible material conforms to at least part of the perimeter of the PTC element. The device has low resistance, low capacitance, reduced size, and stable resistance, and can meet power cross testing requirements. In addition, assemblies of electrical devices are provided.Type: GrantFiled: November 17, 2003Date of Patent: July 26, 2005Assignee: Tyco Electronics CorporationInventors: Cecilia A. Walsh, Rodrigo Rubiano, Albert R. Martin
-
Publication number: 20040136136Abstract: An electrical device suitable for use in digital telecommunications applications is provided. The device includes a laminar PTC element composed of a conductive polymer composition sandwiched between two metal foil electrodes. A first insulating layer which is composed of an electrically insulating flexible material conforms to at least part of the perimeter of the PTC element. The device has low resistance, low capacitance, reduced size, and stable resistance, and can meet power cross testing requirements. In addition, assemblies of electrical devices are provided.Type: ApplicationFiled: November 17, 2003Publication date: July 15, 2004Inventors: Cecilia A. Walsh, Rodrigo Rubiano, Albert R. Martin
-
Publication number: 20040104802Abstract: An electrical device in which an element composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode, the first surface having a center line average roughness Ra and a reflection density RD, the product Ra times RD being 0.5 to 1.6 &mgr;m. The conductive polymer composition preferably exhibits PTC behavior. In a second embodiment an electrical device has an element composed of a conductive polymer composition in contact with the first surface of a metal electrode produced by providing a base metal foil having an Ra of at most 0.45 &mgr;m and depositing material onto the base metal foil to form a first surface having a product of Ra times RD of at least 0.14 &mgr;m. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.Type: ApplicationFiled: July 11, 2003Publication date: June 3, 2004Inventors: Paul N. Becker, Orion Jankowski, Cecilia A. Walsh
-
Publication number: 20040051622Abstract: A method for tuning a resistance v. temperature profile of a surface mountable polymeric PTC device for use as an overtemperature protection device. The method includes preparing a laminate comprising a conductive polymer composite sandwiched between metal foil electrodes; crosslinking the laminate; forming a panel from the crosslinked laminate by patterning the laminate to form a plurality of surface mountable devices; irradiating the panel using electron beam irradiation of at least 20 Mrad; and providing individual devices by subdividing the irradiated panel.Type: ApplicationFiled: September 5, 2003Publication date: March 18, 2004Applicant: Tyco Electronics CorporationInventors: Ann Banich, Cecilia A. Walsh
-
Publication number: 20040006867Abstract: An electrical device (1) in which an element (7) composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode (3), the first surface having a center line average roughness Ra and a reflection density RD, the product Ra times RD being at least 0.06 &mgr;m, with an adhesion promoting layer positioned between the first surface of the metal electrode and the polymer element. The conductive polymer composition preferably exhibits PTC behavior. In other aspects, electrical devices using more than one adhesion promoting layer (11), and electrical devices using an adhesion promoting layer in combination with a crosslinking agent (9) are provided. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.Type: ApplicationFiled: January 3, 2003Publication date: January 15, 2004Inventors: Paul N. Becker, James A. Rinde, Barry C. Mathews, Orion Jankowski, Cecilia A. Walsh, Ryan W. Dupon
-
Patent number: 6593843Abstract: An electrical device in which an element composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode, the first surface having a center line average roughness Ra and a reflection density RD, the product Ra times RD being 0.5 to 1.6 &mgr;m. The conductive polymer composition preferably exhibits PTC behavior. In a second embodiment an electrical device has an element composed of a conductive polymer composition in contact with the first surface of a metal electrode produced by providing a base metal foil having an Ra of at most 0.45 &mgr;m and depositing material onto the base metal foil to form a first surface having a product of Ra times RD of at least 0.14 &mgr;m. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.Type: GrantFiled: June 28, 2000Date of Patent: July 15, 2003Assignee: Tyco Electronics CorporationInventors: Paul N. Becker, Orion Jankowski, Cecilia A. Walsh
-
Patent number: 6531950Abstract: An electrical device in which an element composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode, the first surface having a center line average roughness Ra and a reflection density RD, the product Ra times RD being at least 0.06 &mgr;m, with an adhesion promoting layer positioned between the first surface of the metal electrode and the polymer element. The conductive polymer composition preferably exhibits PTC behavior. In other aspects, electrical devices using more than one adhesion promoting layer, and electrical devices using an adhesion promoting layer in combination with a crosslinking agent are provided. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.Type: GrantFiled: June 28, 2000Date of Patent: March 11, 2003Assignee: Tyco Electronics CorporationInventors: Paul N. Becker, James A. Rinde, Barry C. Mathews, Orion Jankowski, Cecilia A. Walsh
-
Publication number: 20020089408Abstract: An electrical device suitable for use in digital telecommunications applications is provided. The device includes a laminar PTC element composed of a conductive polymer composition sandwiched between two metal foil electrodes. A first insulating layer which is composed of an electrically insulating flexible material conforms to at least part of the perimeter of the PTC element. The device has low resistance, low capacitance, reduced size, and stable resistance, and can meet power cross testing requirements. In addition, assemblies of electrical devices are provided.Type: ApplicationFiled: January 10, 2001Publication date: July 11, 2002Inventors: Cecilia A. Walsh, Rodrigo Rubiano, Albert R. Martin
-
Patent number: 5361148Abstract: The present invention relates to an improved process for producing photorefractive net gain two beam coupling utilizing polymeric materials.Type: GrantFiled: January 21, 1993Date of Patent: November 1, 1994Assignee: International Business Machines CorporationInventors: Gary C. Bjorklund, Donald M. Burland, Marcus C. J. M. Donckers, Robert D. Miller, William E. Moerner, Scott M. Silence, Robert J. Twieg, Cecilia A. Walsh