Patents by Inventor Alfred LOUIS

Alfred LOUIS 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: 11599056
    Abstract: A photoconductive drum for an electrophotographic image forming device according to one example embodiment includes a cylindrical drum member. A shaft defines a rotational axis of the photoconductive drum. An end cap is positioned at an axial end of the drum member. An electrical contact is positioned against an axially inboard side of the end cap. The electrical contact electrically connects the shaft to the drum member. The electrical contact includes a plurality of projections that contact an inner circumferential surface of the drum member. A plurality of grooves are formed in an outer circumferential surface of the end cap.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: March 7, 2023
    Assignee: Lexmark International, Inc.
    Inventors: Alfred Louis Fahmy, Kyle Benjamin Freels, Jody Evan McCoy
  • Publication number: 20230025282
    Abstract: A photoconductive drum for an electrophotographic image forming device according to one example embodiment includes a cylindrical drum member. A shaft defines a rotational axis of the photoconductive drum. An end cap is positioned at an axial end of the drum member. An electrical contact is positioned against an axially inboard side of the end cap. The electrical contact electrically connects the shaft to the drum member. The electrical contact includes a plurality of projections that contact an inner circumferential surface of the drum member. A plurality of grooves are formed in an outer circumferential surface of the end cap.
    Type: Application
    Filed: January 12, 2022
    Publication date: January 26, 2023
    Inventors: ALFRED LOUIS FAHMY, KYLE BENJAMIN FREELS, JODY EVAN MCCOY
  • Publication number: 20170323602
    Abstract: A method for displaying an input frame on an edge-lit display lit by a multitude of light emitting diodes (LED) placed only along one or more sides of the display, comprises the steps of determining a brightness level for each LED of the multitude of LEDs, based on the input frame and an influence of each LED on the brightness of a pixel of the display, such that the brightness of the pixel essentially corresponds to the brightness level required by the input frame and an energy consumption of the LEDs and/or a difference between a resulting backlight and the input frame is essentially minimal, according to a given measure; dimming the light emitting diodes (LED), based on at least one input frame; and displaying the input frame on the display. According to the invention, a relation between at least two different LEDs of the multi-tude of LEDs, in particular between their respective brightness levels, is taken into ac-count in the determination of the brightness levels.
    Type: Application
    Filed: November 17, 2015
    Publication date: November 9, 2017
    Applicant: UNIVERSITÄT DES SAARLANDES
    Inventors: Michael KRAUSE, Alfred LOUIS, Martin RIPLINGER, Chihao XU
  • Publication number: 20170115613
    Abstract: A photoconductive drum assembly according to one embodiment includes a photoconductive drum rotatable about a rotational axis in first and second rotational directions. A spring brake has a coiled portion wrapped around a portion of the photoconductive drum at its axial end and around the rotational axis of the photoconductive drum. The spring brake has a first arm and a second arm. The first arm is positioned to flex in an unwinding direction causing the coiled portion to unwind upon the first arm receiving a force in the first rotational direction. The first arm is positioned to flex in a winding direction and to push the second arm in an unwinding direction relieving winding of the coiled portion caused by the flexing of the first arm in the winding direction of the first arm upon the first arm receiving a force in the second rotational direction.
    Type: Application
    Filed: October 27, 2015
    Publication date: April 27, 2017
    Inventors: ALFRED LOUIS FAHMY, JAMES ERIC DICKERSON, KYLE BENJAMIN FREELS
  • Patent number: 9618891
    Abstract: A photoconductive drum assembly according to one embodiment includes a photoconductive drum rotatable about a rotational axis in first and second rotational directions. A spring brake has a coiled portion wrapped around a portion of the photoconductive drum at its axial end and around the rotational axis of the photoconductive drum. The spring brake has a first arm and a second arm. The first arm is positioned to flex in an unwinding direction causing the coiled portion to unwind upon the first arm receiving a force in the first rotational direction. The first arm is positioned to flex in a winding direction and to push the second arm in an unwinding direction relieving winding of the coiled portion caused by the flexing of the first arm in the winding direction of the first arm upon the first arm receiving a force in the second rotational direction.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: April 11, 2017
    Assignee: Lexmark International, Inc.
    Inventors: Alfred Louis Fahmy, James Eric Dickerson, Kyle Benjamin Freels
  • Patent number: 8195064
    Abstract: A separator hanger has a body with forward and rearward portions and a central portion interconnecting the forward and rearward portions. The rearward portion has side wing sections extending laterally in opposite directions beyond opposite side edges of the central portion with respective elements thereon adapted to extend through first slots in a packaging insert. The rearward portion also has a tail section between the side wing sections with an element thereon adapted to extend through a second slot in the packaging insert located between and offset from the first slots. Such elements provide the rearward portion in a threaded relationship with the packaging insert so as to detachably attach the rearward portion thereto. The forward portion is adapted to anchor the body to one portion of a device so as to thereby constrain the packaging insert to a position clear of another portion of the device located nearby the packaging insert.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: June 5, 2012
    Assignee: Lexmark International, Inc.
    Inventors: James Eric Dickerson, Alfred Louis Fahmy
  • Publication number: 20120007144
    Abstract: A semiconductor device comprises an Si substrate 10 and a compound layer 11 of Si1-XGeX disposed on the substrate 10. X is varied from 0 to 0.2 away from the substrate 10 towards the upper surface of the compound layer 11, with the rate of change of X increasing through the layer. The increasing rate of change of X significantly improves the defectivity levels and the surface roughness at the surface of layer 11.
    Type: Application
    Filed: June 6, 2011
    Publication date: January 12, 2012
    Applicant: IQE SILICON COMPOUNDS LTD
    Inventors: Maurice Howard Fisher, Benoit Alfred Louis Roumiguires, Aled Owen Morgan
  • Publication number: 20110244174
    Abstract: A separator hanger has a body with forward and rearward portions and a central portion interconnecting the forward and rearward portions. The rearward portion has side wing sections extending laterally in opposite directions beyond opposite side edges of the central portion with respective elements thereon adapted to extend through first slots in a packaging insert. The rearward portion also has a tail section between the side wing sections with an element thereon adapted to extend through a second slot in the packaging insert located between and offset from the first slots. Such elements provide the rearward portion in a threaded relationship with the packaging insert so as to detachably attach the rearward portion thereto. The forward portion is adapted to anchor the body to one portion of a device so as to thereby constrain the packaging insert to a position clear of another portion of the device located nearby the packaging insert.
    Type: Application
    Filed: June 14, 2011
    Publication date: October 6, 2011
    Inventors: James Eric Dickerson, Alfred Louis Fahmy
  • Patent number: 7983595
    Abstract: A separator hanger has a body with forward and rearward portions and a central portion interconnecting the forward and rearward portions. The rearward portion has side wing sections extending laterally in opposite directions beyond opposite side edges of the central portion with respective elements thereon adapted to extend through first slots in a packaging insert. The rearward portion also has a tail section between the side wing sections with an element thereon adapted to extend through a second slot in the packaging insert located between and offset from the first slots. Such elements provide the rearward portion in a threaded relationship with the packaging insert so as to detachably attach the rearward portion thereto. The forward portion is adapted to anchor the body to one portion of a device so as to thereby constrain the packaging insert to a position clear of another portion of the device located nearby the packaging insert.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: July 19, 2011
    Assignee: Lexmark International, Inc.
    Inventors: James Eric Dickerson, Alfred Louis Fahmy
  • Publication number: 20100019113
    Abstract: A separator hanger has a body with forward and rearward portions and a central portion interconnecting the forward and rearward portions. The rearward portion has side wing sections extending laterally in opposite directions beyond opposite side edges of the central portion with respective elements thereon adapted to extend through first slots in a packaging insert. The rearward portion also has a tail section between the side wing sections with an element thereon adapted to extend through a second slot in the packaging insert located between and offset from the first slots. Such elements provide the rearward portion in a threaded relationship with the packaging insert so as to detachably attach the rearward portion thereto. The forward portion is adapted to anchor the body to one portion of a device so as to thereby constrain the packaging insert to a position clear of another portion of the device located nearby the packaging insert.
    Type: Application
    Filed: July 23, 2008
    Publication date: January 28, 2010
    Inventors: James Eric Dickerson, Alfred Louis Fahmy
  • Patent number: 7310494
    Abstract: An apparatus and method for the transport and/or storage of developing agent in an image forming apparatus. A cartridge may be employed having a reservoir for developing agent and a component, such as a drum, which may include an interior region capable of storing developing agent. A transport device may be included that is capable of transporting developing agent between the reservoir and a location in the image forming apparatus such as the drum interior.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: December 18, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Alfred Louis Fahmy, Robert Watson McAlpine, Franklin Joseph Palumbo, William Dale Smith, Donald Wayne Stafford, Gregory Scott Tigges
  • Patent number: 7167672
    Abstract: A conveyor mechanism for moving waste toner within an interior of a waste toner reservoir. The conveyor mechanism has a first end positioned in proximity to an inlet into the waste toner reservoir, and a second end positioned vertically above the first end. The conveyor mechanism operates to move the toner from a lower position within the waste toner reservoir to the vertically elevated position. The conveyor device may allow for the capacity of the waste toner reservoir to be more fully utilized. In use, the conveyor device is activated and waste toner is moved into the upper reaches of the waste toner reservoir.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: January 23, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Donald Wayne Stafford, Robert Watson McAlpine, Franklin Joseph Palumbo, Alfred Louis Fahmy, Gregory Scott Tigges, William Dale Smith
  • Patent number: 4074405
    Abstract: A tow of continuous filaments is fed by aspiration into a stream of compressible fluid. The stream containing the filaments is directed into contact with a barrier disposed within a chamber at a force sufficient to initiate crimping of the filaments. A major portion of the compressible fluid is separated from the filaments and expelled from the chamber. The filaments are transported through the chamber by continuous movement of a surface therein at sufficient velocity to cause overfeeding of the filaments, whereby the filaments are forced against a mass of the tow and emerge from the chamber in crimped form.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: February 21, 1978
    Assignee: Allied Chemical Corporation
    Inventors: Hsin Lang Li, Hendrikus Johan Oswald, Alfred Louis Liland
  • Patent number: 4024611
    Abstract: Continuous filaments are fed by aspiration into a stream of heated fluid. The filaments are then contacted with at least a second stream of heated fluid to increase the temperature of the filaments. The combined streams of fluid containing the filaments are directed into contact with a barrier disposed within a chamber at a force sufficient to initiate crimping of the filaments. A major portion of the fluid is separated from the filaments and expelled from the chamber. The filaments are transported through the chamber by continuous movement of a surface therein at sufficient velocity to cause overfeeding of the filaments, whereby the filaments are forced against a mass thereof and emerge from the chamber in crimped form.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: May 24, 1977
    Assignee: Allied Chemical Corporation
    Inventors: Hsin Lang Li, Alfred Louis Liland, Hendrikus Johan Oswald
  • Patent number: 4024610
    Abstract: Continuous filaments, e.g. in the form of yarn, are fed by aspiration into a stream of heated fluid. The stream containing the filaments is directed into contact with a barrier disposed within a chamber at a force sufficient to initiate crimping of the filaments. A major portion of the fluid is separated from the filaments and expelled from the chamber. The filaments are transported through the chamber by continuous movement of a surface therein at sufficient velocity to cause overfeeding of the filaments, whereby the filaments are forced against a mass thereof producing crimps therein. One or more streams of heated fluid are then contacted with the mass of filaments to set the crimps. The crimped filaments emerge from the chamber through an outlet opening therein.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: May 24, 1977
    Assignee: Allied Chemical Corporation
    Inventors: Hsin Lang Li, Alfred Louis Liland, Hendrikus Johan Oswald