Patents by Inventor Darrell A. Stephens

Darrell A. Stephens 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: 11820480
    Abstract: A propulsion system for a boat comprises a plurality of aerofoils connected to a main mast. At least one of the aerofoils is a displaceable aerofoil adapted to be displaced along the main mast between an open position and a closed position. When the displaceable aerofoil is in its open position the aerofoils together form a sail of open sail area. When the displaceable aerofoil is in its closed position at least some of the aerofoils overlap to form a sail of closed sail area, the closed sail area being less than the open sail area. The propulsion system can include a displacement mechanism to displace the displaceable aerofoil between its open and closed positions; at least one of the aerofoils having a solar panel thereon; and/or a stub mast extending along and free to rotate about a stub axis and connected to the main mast by a stub pivot.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: November 21, 2023
    Assignee: Darrell Stephen Smith
    Inventor: Darrell Stephen Smith
  • Publication number: 20210163112
    Abstract: A propulsion system for a boat comprises a plurality of aerofoils connected to a main mast. At least one of the aerofoils is a displaceable aerofoil adapted to be displaced along the main mast between an open position and a closed position. When the displaceable aerofoil is in its open position the aerofoils together form a sail of open sail area. When the displaceable aerofoil is in its closed position at least some of the aerofoils overlap to form a sail of closed sail area, the closed sail area being less than the open sail area. The propulsion system can include a displacement mechanism to displace the displaceable aerofoil between its open and closed positions; at least one of the aerofoils having a solar panel thereon; and/or a stub mast extending along and free to rotate about a stub axis and; connected to the main mast by a stub pivot.
    Type: Application
    Filed: August 12, 2019
    Publication date: June 3, 2021
    Inventor: Darrell Stephen Smith
  • Patent number: 9031451
    Abstract: An example toner cartridge includes a reservoir for containing toner and an exit port in fluid communication with the reservoir. A shutter is positioned at the exit port and movable between an open position and a closed position. A first linkage member is operatively connected to the shutter to open the shutter upon being actuated by a first engagement feature. A second linkage member is pivotally attached to a side wall of the housing and biased toward a home position. A third linkage member is movable with the second linkage member. When the second linkage member is in the home position, the third linkage member is in a blocking position preventing the first linkage member from opening the shutter. When the second linkage member pivots away from the home position, the third linkage member moves to a non-blocking position permitting the first linkage member to open the shutter.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: May 12, 2015
    Assignee: Lexmark International, Inc.
    Inventors: Darrell Stephen Rulon, John Andrew Buchanan, James Anthany Carter, II, Gregory Alan Cavill, Mark Duane Foster, Benjamin Keith Newman, Matthew Lee Rogers, Keith Seaman, Christopher Gene Vowels, Tyler Frederick Williams
  • Publication number: 20140241758
    Abstract: An example toner cartridge includes a reservoir for containing toner and an exit port in fluid communication with the reservoir. A shutter is positioned at the exit port and movable between an open position and a closed position. A first linkage member is operatively connected to the shutter to open the shutter upon being actuated by a first engagement feature. A second linkage member is pivotally attached to a side wall of the housing and biased toward a home position. A third linkage member is movable with the second linkage member. When the second linkage member is in the home position, the third linkage member is in a blocking position preventing the first linkage member from opening the shutter. When the second linkage member pivots away from the home position, the third linkage member moves to a non-blocking position permitting the first linkage member to open the shutter.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: LEXMARK INTERNATIONAL, INC.
    Inventors: Darrell Stephen Rulon, John Andrew Buchanan, James Anthany Carter, II, Gregory Alan Cavill, Mark Duane Foster, Benjamin Keith Newman, Matthew Lee Rogers, Keith Seaman, Christopher Gene Vowels, Tyler Frederick Williams
  • Patent number: 7982564
    Abstract: A starter solenoid comprises a solenoid cap defining a contact channel. A first terminal and a second terminal are provided on the solenoid cap. A contact is moveable within the channel between a first position where the contact touches the first and second terminals and a second position where the contact is removed from the first and second terminals. A shield is positioned in the channel to space the contact apart from the channel walls. The contact comprises a first terminal face connected to a second terminal face. The first and second terminal faces are configured to respectively contact the first and second terminals when the contact is in the first position. Opposing lips extend from opposite sides of the first terminal face with a curved shoulder provided between the first terminal face and each of the opposing lips.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: July 19, 2011
    Assignee: Remy Technologies, LLC
    Inventors: Peter K Farrar, David A. Fulton, Darrell Stephens
  • Publication number: 20090322456
    Abstract: A starter solenoid comprises a solenoid cap defining a contact channel. A first terminal and a second terminal are provided on the solenoid cap. A contact is moveable within the channel between a first position where the contact touches the first and second terminals and a second position where the contact is removed from the first and second terminals. A shield is positioned in the channel to space the contact apart from the channel walls. The contact comprises a first terminal face connected to a second terminal face. The first and second terminal faces are configured to respectively contact the first and second terminals when the contact is in the first position. Opposing lips extend from opposite sides of the first terminal face with a curved shoulder provided between the first terminal face and each of the opposing lips.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Applicant: REMY INTERNATIONAL, INC.
    Inventors: Peter K. Farrar, David A. Fulton, Darrell Stephens
  • Patent number: 6800651
    Abstract: The present invention relates to potentiators of metabotropic glutamate receptor function and specifically provides compounds of formula I, compositions thereof and methods of using the same.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: October 5, 2004
    Assignee: Eli Lilly and Company
    Inventors: Darrell Stephen Coleman, Gunnar Erik Jagdmann, Kirk Willis Johnson, Michael Parvin Johnson, Thomas Hallett Large, James Allen Monn, Darryle Darwin Schoepp, Thomas Charles Britton, Steven Scott Henry, Joseph Patrick Tizzano
  • Publication number: 20040160321
    Abstract: The self-storage industry requires a door monitoring system that can be retrofitted to existing facilities yet is easy to maintain and cost effective.
    Type: Application
    Filed: September 3, 2003
    Publication date: August 19, 2004
    Inventor: Darrell Stephen Hoblack
  • Publication number: 20040006114
    Abstract: The present invention relates to potentiators of metabotropic glutamate receptor function and specifically provides compounds of formula I, compositions thereof and methods of using the same.
    Type: Application
    Filed: November 20, 2002
    Publication date: January 8, 2004
    Inventors: Darrell Stephen Coleman, Gunnar Erik Jagdmann, Kirk Willis Johnson, Michael Parvin Johnson, Thomas Hallett Large, James Allen Monn, Darryle Darwin Schoepp, David Anthony Barda, Thomas Charles Britton, Bruce Anthony Dressman, Steven Scott Henry, William Joseph Hornback, Joseph Patrick Tizzano, Michael William Fichtner
  • Patent number: 5429496
    Abstract: A portable flare boom for the combustion of waste gases is disclosed for easy installation and maintenance requiring limited labor to adjust and install the flare boom. Preferably, the portable flare boom is for locations close to tank batteries or oil wells for the incineration of waste gas which is often vented into the atmosphere. It has a unitary vertical support frame perpendicular to a base plate and a hinge pin located on the vertical support frame for raising and lowering a flare stack pipe. On the upper end of the flare stack pipe is located a flaring assembly.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: July 4, 1995
    Assignee: National Tank Company
    Inventors: Darrell A. Stephens, Bobby R. Duke