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).

  • Patent number: 11971845
    Abstract: 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: Grant
    Filed: June 16, 2022
    Date of Patent: April 30, 2024
    Assignee: 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
  • Patent number: 11913365
    Abstract: 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: Grant
    Filed: July 26, 2022
    Date of Patent: February 27, 2024
    Assignee: WATLOW ELECTRIC MANUFACTURING COMPANY
    Inventors: Mark D. Everly, Jeremy Ohse, David P. Culbertson, Richard T. Williams, George Jambor, Jacob Wilson
  • Patent number: 10716919
    Abstract: 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: Grant
    Filed: October 2, 2018
    Date of Patent: July 21, 2020
    Assignee: Edwards Lifesciences Corporation
    Inventors: 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
  • Patent number: 10537431
    Abstract: 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: Grant
    Filed: October 2, 2018
    Date of Patent: January 21, 2020
    Assignee: Edwards Lifesciences Corporation
    Inventors: 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
  • Patent number: 10500377
    Abstract: 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: Grant
    Filed: October 2, 2018
    Date of Patent: December 10, 2019
    Assignee: Edwards Lifesciences Corporation
    Inventors: 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
  • Patent number: 10391281
    Abstract: 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: Grant
    Filed: October 2, 2018
    Date of Patent: August 27, 2019
    Assignee: Edwards Lifesciences Corporation
    Inventors: 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
  • Patent number: 10391279
    Abstract: 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: Grant
    Filed: October 2, 2018
    Date of Patent: August 27, 2019
    Assignee: Edwards Lifesciences Corporation
    Inventors: 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
  • Patent number: 10391280
    Abstract: 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: Grant
    Filed: October 2, 2018
    Date of Patent: August 27, 2019
    Assignee: Edwards Lifesciences Corporation
    Inventors: 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
  • Patent number: 10327896
    Abstract: 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: Grant
    Filed: October 9, 2015
    Date of Patent: June 25, 2019
    Assignee: Edwards Lifesciences Corporation
    Inventors: Pu Zhou, Yong Gao, Erik Bulman, Baigui Bian, Yidong M. Zhu, David D. Williams
  • Publication number: 20190030297
    Abstract: 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: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: 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
  • Publication number: 20190030299
    Abstract: 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: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: 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
  • Publication number: 20190030295
    Abstract: 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: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: 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
  • Publication number: 20190030298
    Abstract: 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: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: 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
  • Publication number: 20190030296
    Abstract: 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: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: 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
  • Publication number: 20190029820
    Abstract: 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: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: 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
  • Publication number: 20160296332
    Abstract: 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: Application
    Filed: October 9, 2015
    Publication date: October 13, 2016
    Inventors: Pu Zhou, Yong Gao, Erik Bulman, Baigui Bian, Yidong M. Zhu, David D. Williams
  • Publication number: 20140351174
    Abstract: 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: Application
    Filed: May 21, 2013
    Publication date: November 27, 2014
    Inventors: Patricia Penman, David D. Williams, Axel Bayala, Ellen Clark Arnold
  • Patent number: 8447533
    Abstract: 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: Grant
    Filed: October 12, 2010
    Date of Patent: May 21, 2013
    Assignee: Eastech Flow Controls, Inc.
    Inventors: Franklin Sinclair, David D. Williams
  • Patent number: 8246705
    Abstract: 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: Grant
    Filed: April 22, 2010
    Date of Patent: August 21, 2012
    Inventors: Charles E. Bain, David D. Williams
  • Publication number: 20100275900
    Abstract: 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: Application
    Filed: April 22, 2010
    Publication date: November 4, 2010
    Inventors: Charles E. Bain, David D. Williams