Patents by Inventor David H. Walters
David H. Walters 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).
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Publication number: 20240098969Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells having horizontally oriented access devices and storage nodes formed in tiers. And, more particularly, to multiple, alternating silicon germanium (SiGe) and single crystalline silicon (Si) in different thicknesses to form tiers in which to form the horizontal access devices in vertical three-dimensional (3D) memory. The horizontally oriented access devices can have a first source/drain regions and a second source drain regions separated by single crystalline silicon (Si) channel regions. The single crystalline silicon (Si) channel regions can include a dielectric material to provide support structure to the single crystalline channel regions when forming the horizontal access devices in vertical three-dimensional (3D) memory. Horizontally oriented access lines can connect to gate structures opposing the channel regions. Vertical digit lines coupled to the first source/drain regions.Type: ApplicationFiled: September 15, 2022Publication date: March 21, 2024Inventors: David K. Hwang, Yoshitaka Nakamura, Scott E. Sills, Si-Woo Lee, Yuanzhi Ma, Glen H. Walters
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Publication number: 20240098970Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells having horizontally oriented access devices and storage nodes. The horizontally oriented access devices having a first source/drain regions and a second source drain regions separated by silicon (Si) channel regions. A digit line having a global digit line (GDL) contact is formed in a trench adjacent to the first source/drain regions. In one example, the digit line is electrically isolated from a neighboring digit line at the bottom of the trench. In another example, the digit line is formed continuously along a bottom surface of trench to form shared digit lines between horizontal access devices, in two separate arrays, on opposing second vertical surfaces. The memory cells have horizontally oriented storage nodes coupled to the second source/drain regions and vertical digit lines coupled to the first source/drain regions.Type: ApplicationFiled: September 16, 2022Publication date: March 21, 2024Inventors: Scott E. Sills, Si-Woo Lee, David K. Hwang, Yoshitaka Nakamura, Yuanzhi Ma, Glen H. Walters
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Patent number: 7013084Abstract: A hierarchical and distributed control architecture for managing an optical communications network. The architecture includes a line card manager level for managing individual line cards in an optical switch, a node manager level for managing multiple line cards in an optical switch/node, and a network management system level for managing multiple optical switches/nodes in a network. An event manager at the node manager level enables software components that are running at the node manager to register for and receive events, and to post events. The events may be triggered, e.g., by a change in a status of the switch, or an alarm condition. Control architecture functionalities include signaling, routing, protection switching and network management. Furthermore, the network management function includes a topology manager, a performance manager, a connection manager, a fault detection manager, and a configuration manager.Type: GrantFiled: February 28, 2001Date of Patent: March 14, 2006Assignee: Lambda OpticalSystems CorporationInventors: Abdella Battou, Moon W. Kim, Anastasios Tzathas, David H. Walters, Mario F. Alvarez, David M. Brooks, I. Michael Mandelberg, Chin J. Chen
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Patent number: 6905155Abstract: In a motor vehicle having a cargo area over an in-floor recess for storing a spare wheel and tire, a multiple height load floor system for covering the in-floor recess provides the option of selecting the depth of the recess. The floor system is adapted to allot a lesser volume to the in-floor recess for use with an undersized spare, or a greater volume when a full-size spare is provided. In a motor vehicle with folding seats, the folding seats are selectively raised or lowered to align with the upper surface of the load floor system in its selected position, in order to present a substantially flat surface for carrying cargo. The selective raising or lowering of the seats and the floor system can be achieved through manually actuated or electrically powered mechanisms.Type: GrantFiled: January 28, 2004Date of Patent: June 14, 2005Assignee: DaimlerChrysler CorporationInventors: William T Presley, Paulius Butkunas, David H Walter
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Patent number: 6792815Abstract: A ring load cell configured to measure force, moment, and temperature components in an orthogonal three-axis coordinate system. The ring-load-cell structure consists of two annular flanges having a common central axis through which a shaft may be disposed. The annular flanges are interconnected by a plurality of filleted posts configured to enhance strain distribution and which are disposed parallel to the common central axis, equally spaced about the circumference of the annular flanges. A plurality of strain gauges is disposed either on the posts or on fillets, and a plurality of temperature sensors is disposed either on the posts or on the inner surfaces of the annular flanges. Signals from the strain gauges and temperature sensors are processed to provide thermally compensated strain measurements of the applied forces and moments on the ring-load-cell structure in the orthogonal three-axis coordinate system.Type: GrantFiled: May 8, 2002Date of Patent: September 21, 2004Assignee: The Timken CompanyInventors: Graham F. McDearmon, David R. Leeper, David H. Walter, Doug H. Smith
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Publication number: 20030209085Abstract: A ring load cell configured to measure force, moment, and temperature components in an orthogonal three-axis coordinate system. The ring-load-cell structure consists of two annular flanges having a common central axis through which a shaft may be disposed. The annular flanges are interconnected by a plurality of filleted posts configured to enhance strain distribution and which are disposed parallel to the common central axis, equally spaced about the circumference of the annular flanges. A plurality of strain gauges is disposed either on the posts or on fillets, and a plurality of temperature sensors is disposed either on the posts or on the inner surfaces of the annular flanges. Signals from the strain gauges and temperature sensors are processed to provide thermally compensated strain measurements of the applied forces and moments on the ring-load-cell structure in the orthogonal three-axis coordinate system.Type: ApplicationFiled: May 8, 2002Publication date: November 13, 2003Applicant: The Timken CompanyInventors: Graham F. McDearmon, David R. Leeper, David H. Walter, Doug H. Smith
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Publication number: 20030163555Abstract: A hierarchical and distributed control architecture for managing an optical communications network. The architecture includes a line card manager level for managing individual line cards in an optical switch, a node manager level for managing multiple line cards in an optical switch/node, and a network management system level for managing multiple optical switches/nodes in a network. An event manager at the node manager level enables software components that are running at the node manager to register for and receive events, and to post events. The events may be triggered, e.g., by a change in a status of the switch, or an alarm condition. Control architecture functionalities include signaling, routing, protection switching and network management. Furthermore, the network management function includes a topology manager, a performance manager, a connection manager, a fault detection manager, and a configuration manager.Type: ApplicationFiled: February 28, 2001Publication date: August 28, 2003Inventors: Abdella Battou, Moon W. Kim, Anastasios Tzathas, David H. Walters, Mario F. Alvarez, David M. Brooks, I. Michael Mandelberg, Chin J. Chen
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Publication number: 20020176131Abstract: An optical communications network having at least one optical switch connected to a network access device. The optical switch includes a first line card disposed along a first communications path over which a first optical signal is transmitted. The first line card is connected to the network access device. A second line card is disposed along a second communications path over which a second optical signal is transmitted. An inter-card communication channel is provided for bridging the second path to the first line card. The system enables the rapid switching of traffic from the first optical path to the second optical path.Type: ApplicationFiled: February 28, 2001Publication date: November 28, 2002Inventors: David H. Walters, Abdella Battou, Anastasios Tzathas
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Patent number: 6019410Abstract: A fold out bed extender for a motor vehicle includes a rear panel, a first set of swing panels and a second set of swing panels articulable from a stowed position to an operable position. Each set of swing panels preferably has a leading panel, a trailing panel and a hinge pivotally interconnecting the leading panel and trailing panels. Each leading panel is adapted to be pivotally attached to the bed of the vehicle and each trailing panel is detachably coupled to the rear panel when the first and second sets of swing panels are in the operable position.Type: GrantFiled: June 30, 1999Date of Patent: February 1, 2000Assignee: DaimlerChryslerInventors: Mark C. Trostle, Carl Mather, Nigel Giddons, David H. Walter
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Patent number: 5161808Abstract: A collapsible planar sealing gasket includes a number of longitudinally extending sections disposed in an end-to-end relationship with each longitudinal section being integrally and continuously joined to an adjacent longitudinally extending section by a corner portion that has an arcuate cut in the gasket material extending from one longitudinal section to an adjoining longitudinal section so as to define a rounded portion of gasket material which allows the bending of the gasket material between a collapsed and an operable position.Type: GrantFiled: February 12, 1991Date of Patent: November 10, 1992Assignee: Great Gasket Concepts, Inc.Inventor: David H. Walters