Patents by Inventor Mark D. Ritchie

Mark D. Ritchie 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: 5497989
    Abstract: In a pinball machine a ball trough is provided for moving the ball between the drain hole and the shooter lane. The ball trough comprises a channel fixed to the playfield and has a first end adjacent the drain hole and a second end proximate to the shooter lane. A rotatable carrier is movable between a first position and a second position for carrying the ball from the channel to the shooter lane and has a load opening, an exit opening, and a passage therebetwen. The load opening is positioned adjacent to the second end when the carrier is disposed in the first position and the exit opening is disposed adjacent to the shooter lane when the carrier is disposed in the second position. The passage may have an arcuate surface on which the ball will ride as the carrier approaches the second position for urging the ball out the exit opening.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: March 12, 1996
    Assignee: CAPCOM Coin-Op, Inc.
    Inventors: Mark D. Ritchie, Ming D. Zhang, Robert S. Morrison
  • Patent number: 5405144
    Abstract: The play feature of the invention consists of an inclined ramp mounted for tilting motion along a single axis. A reversible electric motor, controlled by the flipper buttons, can pivot the ramp in either direction about the axis. The player, by manipulating the flipper buttons, controls the tilting of the ramp thereby to control the path of travel taken by the ball as it rolls down the ramp. The ramp is provided with a plurality of bumpers, roll over switches and out holes that allow the player to score points if the player traverses the ramp in the manner directed by the game program.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: April 11, 1995
    Assignee: Williams Electronics Games, Inc.
    Inventors: Mark D. Ritchie, John W. Skalon
  • Patent number: 5322283
    Abstract: The play feature of the invention consists of a rotary wheel having a plurality of ball receiving sockets located therein. The wheel is rotated such that an empty socket is disposed in a ball receiving position. During the course of play, the game player can direct a ball into the socket where it is retained. The wheel is then rotated to expose another empty socket into which a player can direct a second ball. Once all of the sockets are filled with balls, the game's microprocessor will rotate the wheel to return the balls to the playfield for multiple ball play. The wheel is rotated by an electric motor that is controlled by optical sensors.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: June 21, 1994
    Assignee: Williams Electronics Games, Inc.
    Inventors: Mark D. Ritchie, John W. Skalon
  • Patent number: 5149093
    Abstract: An amusement game operates in conjunction with a trading card dispenser to dispense trading cards to game players who achieve predetermined game objectives through skill during the course of game play.
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: September 22, 1992
    Assignee: Williams Electronics Games, Inc.
    Inventors: Winston H. Schilling, Mark D. Ritchie, John Krutsch, Joseph Joos
  • Patent number: 5137278
    Abstract: An amusement game operates in conjunction with a trading card dispenser to dispense trading cards to game players who achieve predetermined game objectives through skill during the course of game play.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: August 11, 1992
    Assignee: Williams Electronics Games, Inc.
    Inventors: Winston H. Schilling, Mark D. Ritchie, John Krutsch, Joseph Joos