Patents by Inventor David A. Durfee

David A. Durfee 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).

  • PORTABLE ARTICLE INCLUDING A NUMBER OF PATTERNS
    Publication number: 20250000184
    Abstract: A portable article includes a portable body and a number of patterns disposed on the portable body. The patterns are selected from the group consisting of public patterns, detectable patterns, visible pattern, embedded patterns, camouflage patterns, invisible patterns, orienting patterns, collective patterns, external patterns, internal patterns, illuminated patterns, applied patterns and three dimensional patterns.
    Type: Application
    Filed: September 13, 2024
    Publication date: January 2, 2025
    Applicant: Revolution Cycle Works Company
    Inventors: Joseph J. Loberti, Karl Langmuir, David A. Durfee
  • Fluid sensing switch
    Patent number: 11054297
    Abstract: A fluid sensing switch comprising a flex sensor having a plurality of conductive sensing areas and an energizing conductive area and a synchronous detector that detects a presence and a content of a bilge and produces a signal that is used to activate a pump.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: July 6, 2021
    Assignee: Bilge Sense LLC
    Inventors: David A. Durfee, Petar Horvatic, Courtney Pauline Medeiros, Walmen Dumaliang, Jeanette Numbers, Alexander M. Wang, Benjamin Ricci
  • FLUID SENSING SWITCH
    Publication number: 20190353512
    Abstract: A fluid sensing switch comprising a flex sensor having a plurality of conductive sensing areas and an energizing conductive area and a synchronous detector that detects a presence and a content of a bilge and produces a signal that is used to activate a pump.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 21, 2019
    Applicant: Bilge Sense LLC
    Inventors: David A. Durfee, Petar Horvatic, Courtney Pauline Medeiros, Walmen Dumaliang, Jeanette Numbers, Alexander M. Wang, Benjamin Ricci
  • PORTABLE ARTICLE INCLUDING A NUMBER OF PATTERNS
    Publication number: 20190183190
    Abstract: A portable article includes a portable body and a number of patterns disposed on the portable body. The patterns are selected from the group consisting of public patterns, detectable patterns, visible pattern, embedded patterns, camouflage patterns, invisible patterns, orienting patterns, collective patterns, external patterns, internal patterns, illuminated patterns, applied patterns and three dimensional patterns.
    Type: Application
    Filed: December 7, 2018
    Publication date: June 20, 2019
    Applicant: Revolution Cycle Works Company
    Inventors: Joseph J. Loberti, Karl Langmuir, David A. Durfee
  • Electrical thermal storage with edge-of-network tailored energy delivery systems and methods
    Patent number: 8768528
    Abstract: A method and apparatus of controlling the electric power usage of electric thermal storage heaters and systems are based on: 1) current and recorded measurements local to the heater and building; 2) current measurements external to the heater and building; 3) forecasts communicated to the apparatus. The method also includes sending out communications about power use as well as various other local measurements. The apparatus has local controls on the electric thermal storage, including but not limited to the relays that control flow of power into the heating elements, a logic module that integrates the local controls, as well as communication channels that extend outside the building to entities capable of providing automatic forecasts and potentially other types of information not available locally.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: July 1, 2014
    Assignee: VCharge, Inc.
    Inventors: Jessica Millar, David A. Durfee
  • ELECTRICAL THERMAL STORAGE WITH EDGE-OF-NETWORK TAILORED ENERGY DELIVERY SYSTEMS AND METHODS
    Publication number: 20120296479
    Abstract: A method and apparatus of controlling the electric power usage of electric thermal storage heaters and systems are based on: 1) current and recorded measurements local to the heater and building; 2) current measurements external to the heater and building; 3) forecasts communicated to the apparatus. The method also includes sending out communications about power use as well as various other local measurements. The apparatus has local controls on the electric thermal storage, including but not limited to the relays that control flow of power into the heating elements, a logic module that integrates the local controls, as well as communication channels that extend outside the building to entities capable of providing automatic forecasts and potentially other types of information not available locally.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 22, 2012
    Inventors: Jessica Millar, David A. Durfee
  • LIGHTED OR SOUND TIP FOR MOBILITY DEVICES AND METHOD OF USING
    Publication number: 20100315831
    Abstract: A tip for a mobility device which is capable of providing light and/or sound to aid in the safety of the user of the mobility device.
    Type: Application
    Filed: December 28, 2009
    Publication date: December 16, 2010
    Inventors: David A. Durfee, Jon Smyth
  • LIGHTED OR SOUND TIP FOR MOBILITY DEVICES AND METHOD OF USING
    Publication number: 20080225513
    Abstract: A tip for a mobility device which is capable of providing light and/or sound to aid in the safety of the user of the mobility device.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Inventors: David A. Durfee, Jon Smyth