Patents by Inventor Ralph Draper

Ralph Draper 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).

  • Room-to-Room Heat Pump
    Publication number: 20160033145
    Abstract: A system, method, and device for transferring thermal energy between areas of a structure so as to maintain occupant comfort while minimizing the difference between indoor and outdoor temperatures, thereby minimizing thermal losses from the structure. The device operates effectively in the heating season and cooling season, when outdoor temperatures are cold and hot, respectively.
    Type: Application
    Filed: July 29, 2015
    Publication date: February 4, 2016
    Applicant: Twin Harbor Labs, LLC
    Inventors: James D. Logan, Erik Hinrichsen, Ralph Draper, Richard A. Baker, JR., Sean Joseph
  • Process of making cellulose filaments
    Patent number: 5951932
    Abstract: A method of producing lyocell fibers by spinning a solution of cellulose in an organic solvent through an air gap and into a spin bath in which there is provided a cross-draught of air in the air gap.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: September 14, 1999
    Assignee: Acordis Fibres (Holdings) Limited
    Inventors: Patrick Arthur White, Malcolm John Hayhurst, Alan R Owens, Ian David Roughsedge, Richard James Davies, Alan Sellars, Jacqueline Fave MacDonald, Michael Colin Quigley, Ralph Draper, Ronald Derek Payne
  • Process of making cellulose filaments
    Patent number: 5939000
    Abstract: A method of producing lyocell fibres by spinning a solution of cellulose in an organic solvent through an air gap and into a spin bath in which there is provided a cross-draught of air in the air gap.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: August 17, 1999
    Assignee: Acordis Fibres (Holdings) Limited
    Inventors: Patrick Arthur White, Malcolm John Hayhurst, Alan R Owens, Ian David Roughsedge, Richard James Davies, Alan Sellars, Jacqueline Faye MacDonald, Michael Colin Quigley, Ralph Draper, Ronald Derek Payne
  • Spinning cell
    Patent number: 5639484
    Abstract: A spinning cell for producing lyocell fibre by spinning a solution of cellulose in an organic solvent through an air gap into a spin bath has nozzles to create a cross-draught through the air gap.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: June 17, 1997
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventors: Patrick Arthur White, Malcolm John Hayhurst, Alan R. Owens, Ian David Roughsedge, Richard James Davies, Alan Sellars, Jacqueline Faye MacDonald, Michael Colin Quigley, Ralph Draper, Ronald Derek Payne
  • Jet assembly
    Patent number: 5527178
    Abstract: A jet assembly for spinning cellulose fibres from a solution of cellulose in an amine oxide solvent in which the jet assembly includes a generally top-hat shaped spinnerette having a series of downwardly directed holes through the base of the spinnerette and an outwardly directed flange around the periphery of the vertical walls of the spinnerette, the jet assembly including a heated housing engaging with the flange and being bolted to the flange, insulation being provided on the underside of the jet assembly over the outer periphery, the combination of heating and insulation regulating the temperature of the jet assembly for optimum spinning of an amine oxide cellulose solution.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: June 18, 1996
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventors: Patrick A. White, Michael R. Perry, Michael C. Quigley, Malcolm J. Hayhurst, Alan Sellars, Alan Owens, Jacqueline F. MacDonald, Ralph Draper