Patents by Inventor Erik J. Durfey

Erik J. Durfey 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: 5116051
    Abstract: A pressure-sensitive control device for a simulated vehicle in a video game or simulator. In the preferred embodiment a brake pedal control device is implemented having a strain gauge which senses the strain in the material of the brake pedal. This strain is amplified by a differential amplifier having a self-adjusting input circuit with a long time constant which causes any variations in the input voltage not due to changing strain on the brake pedal to be applied to both inputs of a differential amplifier in common mode, thereby cancelling the effect thereof. Only voltage differences resulting from variations in the strain on the brake pedal are amplified by the differential amplifier and output for use by the video game or simulator.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: May 26, 1992
    Assignee: Atari Games Corporation
    Inventors: Rick L. Moncrief, Erik J. Durfey, Max L. Behensky
  • Patent number: 5044956
    Abstract: An apparatus and method for simulating the forces acting on the steering wheel or other control device of a vehicle. The apparatus uses an electrical motor coupled to a steering wheel in the preferred embodiment. The electrical motor is driven by a computer running software which received data regarding the real world forces which would be acting upon a real steering wheel in a car under similar conditions. A software driver coupled to a position-sensing transducer on the steering wheel calculates the steering wheel position and velocity and sends this data to a model process not forming part of the invention. The model process then calculates the conditions affecting the simulated vehicle and outputs data reflecting the real world forces which would affect the steering wheel of the actual car under similar conditions.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: September 3, 1991
    Assignee: Atari Games Corporation
    Inventors: Max L. Behensky, Rick L. Moncrief, Erik J. Durfey, Milton H. Loper, III
  • Patent number: 4960117
    Abstract: A floor-standing video game player enclosure booth is disclosed. The enclosure booth is characterized by being a rear entry booth--that is, the player enters from the end of the booth facing the booth's front wall. The booth additionally includes a player seat. The seat is positioned within the enclosure booth so that, when occupied by a player who is looking directly forward toward the front wall, that player's horizontal field of view is interrupted on at least about 180.degree. by the front and side walls of the enclosure. In this configuration, the front and side walls substantially eliminate distractions and permit the player to focus his energies and attention on the game. The open rear permits substantial numbers of spectators to participate in the game without distracting the player. In preferred embodiments, the player seat is movable, closer to and further from the front wall, so as to give a plurality of game-playing positions adapted for larger and smaller game players.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: October 2, 1990
    Assignee: Atari Games Corporation
    Inventors: Rick L. Moncrief, Erik J. Durfey
  • Patent number: 4949119
    Abstract: An apparatus for creating a realistic feel for a simulated gearshift, comprising a simulated gearshift for a simulated transmission in a simulated vehicle and having a gearshift lever and a simulated shift pattern for simulating the look and movements through an actual shift pattern of an actual gearshift in a vehicle. A pivoting mechanism allows the gearshift lever to pivot about at least two axes. An electrically operable clutch receives a control signal controlling the amount of force applied to the pivoting mechanism to cause resistance to movement by said shift lever along at one of the axes. A positional sensor array generates a signal from which the position of the shift lever in the simulated gearshift pattern may be ascertained. A strain gauge coupled to the gearshift lever senses the degree of strain in the gearshift lever and generates a signal telling whether an operator is pulling or pushing on the gearshift lever and in what direction.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: August 14, 1990
    Assignee: Atari Games Corporation
    Inventors: Rick L. Moncrief, Erik J. Durfey, Jacques D. Aknin