Patents by Inventor David D. Williams
David D. Williams 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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Patent number: 11971845Abstract: An encapsulation block for a digital signal processing (DSP) block. The encapsulation block includes DSP block having an input terminal, an output terminal, and an input clock. The encapsulation block also includes pacing control network operatively connected with the input terminal, the output terminal, and the input clock of the DSP block. The input terminal of the DSP block is configured to receive a samples-in data stream inputted at a predefined clock period defined by the input clock. The output terminal of the DSP block is configured to receive a samples-out data stream outputted at a predefined paced parameter. The pacing control network is configured to control data flow at the samples-in data stream and the samples-out data stream independently of the DSP block.Type: GrantFiled: June 16, 2022Date of Patent: April 30, 2024Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: David D. Moser, Christopher N. Peters, Daniel L. Stanley, Umair Aslam, Elizabeth J. Williams, Angelica Sunga
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Patent number: 11913365Abstract: An exhaust gas heater system for an exhaust system of an internal combustion engine includes a housing and a heating element. The housing includes an outer peripheral wall disposed about a central axis and defining an interior hollow space configured to receive exhaust gas from an exhaust pipe of the exhaust system such that the exhaust gas flows through the interior hollow space. The heating element is positioned within the hollow space and including a first end and a second end. The heating element forms a zig-zag shape extending in a radial direction relative to the central axis.Type: GrantFiled: July 26, 2022Date of Patent: February 27, 2024Assignee: WATLOW ELECTRIC MANUFACTURING COMPANYInventors: Mark D. Everly, Jeremy Ohse, David P. Culbertson, Richard T. Williams, George Jambor, Jacob Wilson
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Patent number: 10716919Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: GrantFiled: October 2, 2018Date of Patent: July 21, 2020Assignee: Edwards Lifesciences CorporationInventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Patent number: 10537431Abstract: An expandable introducer sheath for passage of implant delivery catheters, such as catheters for delivery of prosthetic heart valves. The expandable sheath balances the amounts, shapes and positions of various stiff and elastic structures in the sheath to selectively program the expandability and buckling stiffness of the sheath. The expandable sheath can include, for example, an expandable tubular layer that includes alternating stiff and elastic wall portions of a single radial thickness. The combination of stiff and elastic wall portions allow for torque and push strength to advance the expandable sheath while at the same time accommodating temporary expansion. The expandable sheath can also be reinforced with a tubular layer of braided fibers or a stent structure for additional strength. Other embodiments include selective use of slots or gaps at the distal end of a stiff wall portion to enhance expandability and distribute strain.Type: GrantFiled: October 2, 2018Date of Patent: January 21, 2020Assignee: Edwards Lifesciences CorporationInventors: Pu Zhou, Yong Gao, Erik Bulman, Baigui Bian, Yidong M. Zhu, David D. Williams, Timothy A. Geiser, Michael G. Valdez, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar
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Patent number: 10500377Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: GrantFiled: October 2, 2018Date of Patent: December 10, 2019Assignee: Edwards Lifesciences CorporationInventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Patent number: 10391281Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: GrantFiled: October 2, 2018Date of Patent: August 27, 2019Assignee: Edwards Lifesciences CorporationInventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Patent number: 10391279Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: GrantFiled: October 2, 2018Date of Patent: August 27, 2019Assignee: Edwards Lifesciences CorporationInventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Patent number: 10391280Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: GrantFiled: October 2, 2018Date of Patent: August 27, 2019Assignee: Edwards Lifesciences CorporationInventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Patent number: 10327896Abstract: An expandable introducer sheath for passage of implant delivery catheters, such as catheters for delivery of prosthetic heart valves. The expandable sheath balances the amounts, shapes and positions of various stiff and elastic structures in the sheath to selectively program the expandability and buckling stiffness of the sheath. The expandable sheath can include, for example, an expandable tubular layer that includes alternating stiff and elastic wall portions of a single radial thickness. The combination of stiff and elastic wall portions allow for torque and push strength to advance the expandable sheath while at the same time accommodating temporary expansion. The expandable sheath can also be reinforced with a tubular layer of braided fibers or a stent structure for additional strength. Other embodiments include selective use of slots or gaps at the distal end of a stiff wall portion to enhance expandability and distribute strain.Type: GrantFiled: October 9, 2015Date of Patent: June 25, 2019Assignee: Edwards Lifesciences CorporationInventors: Pu Zhou, Yong Gao, Erik Bulman, Baigui Bian, Yidong M. Zhu, David D. Williams
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Publication number: 20190030297Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: ApplicationFiled: October 2, 2018Publication date: January 31, 2019Inventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Publication number: 20190030299Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: ApplicationFiled: October 2, 2018Publication date: January 31, 2019Inventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Publication number: 20190030295Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: ApplicationFiled: October 2, 2018Publication date: January 31, 2019Inventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Publication number: 20190030298Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: ApplicationFiled: October 2, 2018Publication date: January 31, 2019Inventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Publication number: 20190030296Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.Type: ApplicationFiled: October 2, 2018Publication date: January 31, 2019Inventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana K. Gowdar, Yong Gao, David D. Williams
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Publication number: 20190029820Abstract: An expandable introducer sheath for passage of implant delivery catheters, such as catheters for delivery of prosthetic heart valves. The expandable sheath balances the amounts, shapes and positions of various stiff and elastic structures in the sheath to selectively program the expandability and buckling stiffness of the sheath. The expandable sheath can include, for example, an expandable tubular layer that includes alternating stiff and elastic wall portions of a single radial thickness. The combination of stiff and elastic wall portions allow for torque and push strength to advance the expandable sheath while at the same time accommodating temporary expansion. The expandable sheath can also be reinforced with a tubular layer of braided fibers or a stent structure for additional strength. Other embodiments include selective use of slots or gaps at the distal end of a stiff wall portion to enhance expandability and distribute strain.Type: ApplicationFiled: October 2, 2018Publication date: January 31, 2019Inventors: Pu ZHOU, Yong GAO, Erik BULMAN, Baigui BIAN, Yidong M. ZHU, David D. WILLIAMS, Timothy A. GEISER, Michael G. VALDEZ, Sonny TRAN, Richard D. WHITE, Thanh Huy LE, Tung T. LE, Alpana K. GOWDAR
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Publication number: 20160296332Abstract: An expandable introducer sheath for passage of implant delivery catheters, such as catheters for delivery of prosthetic heart valves. The expandable sheath balances the amounts, shapes and positions of various stiff and elastic structures in the sheath to selectively program the expandability and buckling stiffness of the sheath. The expandable sheath can include, for example, an expandable tubular layer that includes alternating stiff and elastic wall portions of a single radial thickness. The combination of stiff and elastic wall portions allow for torque and push strength to advance the expandable sheath while at the same time accommodating temporary expansion. The expandable sheath can also be reinforced with a tubular layer of braided fibers or a stent structure for additional strength. Other embodiments include selective use of slots or gaps at the distal end of a stiff wall portion to enhance expandability and distribute strain.Type: ApplicationFiled: October 9, 2015Publication date: October 13, 2016Inventors: Pu Zhou, Yong Gao, Erik Bulman, Baigui Bian, Yidong M. Zhu, David D. Williams
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Publication number: 20140351174Abstract: A method of providing a consumer with a fragrancing system to coordinate with their home décor comprising the steps of: (a) providing a palette of décor styles, wherein the palette comprises at least two décor styles; (b) providing a plurality fragrances, wherein at least one of the plurality of fragrances coordinates with at least one of the at least two décor styles; and wherein the wherein the décor style is shown on the fragrance or the palette with an indicator selected from the group consisting of: primary nomenclature and iconography.Type: ApplicationFiled: May 21, 2013Publication date: November 27, 2014Inventors: Patricia Penman, David D. Williams, Axel Bayala, Ellen Clark Arnold
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Patent number: 8447533Abstract: A method of reducing rainwater and/or groundwater inflow and infiltration into a wastewater treatment collection grid. The method preferably involves the steps of (a) dividing the grid into a plurality of major subsystems, (b) determining flow depth levels in each major subsystem under dry and wet conditions, (c) using these wet weather and dry weather flow depth measurements to determine a volume flow ratio for wet versus dry conditions, (d) using these flow ratios to identify the particular major subsystem(s) in which the greatest amount of inflow or infiltration is occurring, and then (e) further dividing the highest ranking major subsystem(s) into smaller subsystems in which the same dry and wet weather level measurement and ranking analysis is preferably conducted to further isolate problem locations for surveillance, maintenance, and/or repair.Type: GrantFiled: October 12, 2010Date of Patent: May 21, 2013Assignee: Eastech Flow Controls, Inc.Inventors: Franklin Sinclair, David D. Williams
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Patent number: 8246705Abstract: A grease containment apparatus to remove grease and other contaminants from hot air exiting a kitchen area through a vent system which includes a vertical separator.Type: GrantFiled: April 22, 2010Date of Patent: August 21, 2012Inventors: Charles E. Bain, David D. Williams
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Publication number: 20100275900Abstract: A grease containment apparatus to remove grease and other contaminants from hot air exiting a kitchen area through a vent system which includes a vertical separator.Type: ApplicationFiled: April 22, 2010Publication date: November 4, 2010Inventors: Charles E. Bain, David D. Williams