Patents by Inventor Leonard J. Rigbey

Leonard J. Rigbey 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: 4508204
    Abstract: A chute for gravity feeding a plurality of like electrical components (1) to a pick-up station of a robotic controlled automatic assembly system comprises guide rails (2,3) down which components slide with their pins (13) extending between the rails. The rails are shaped to provide a downwardly inclined straight track (5) leading into a horizontal track (6) comprising the pick-up station from which the components are taken by the robot. The transition from the inclined track (approximately 30 degrees to the horizontal) to the straight track, although smooth, is quite abrupt and ensures that the next component is successfully fed from the inclined to the horizontal section of the chute each time its predecessor is removed from the pick-up station. Since the length of the horizontal track is such that only one component can be accommodated at a time, accurate positioning of the component in the pick-up station for access by the robot is guaranteed.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: April 2, 1985
    Assignee: International Business Machines Corporation
    Inventors: David MacWilliams, Leonard J. Rigbey
  • Patent number: 4195322
    Abstract: In a recorder having a transducer with a gap which coacts with a flexible medium to record and/or reproduce data, an endless groove is positioned on the transducer to circumscribe the gap.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: March 25, 1980
    Assignee: International Business Machines Corporation
    Inventors: Allen R. Cox, Rafael Pascual, Leonard J. Rigbey
  • Patent number: 4185314
    Abstract: A record disc cartridge has a single internal shutter for opening and closing a head access port adjacent a spindle access member in one wall. A further aperture allows the shutter to be actuated to an open position as the cartridge is moved into a playing position. A spring in the cartridge yieldably biases the shutter to a closed position. When the shutter is open, the spring in the cartridge is cocked to eject the cartridge from a player. Upon release, the spring acts to eject the cartridge.
    Type: Grant
    Filed: November 2, 1978
    Date of Patent: January 22, 1980
    Assignee: International Business Machines Corporation
    Inventors: Michael R. Hatchett, Leonard J. Rigbey
  • Patent number: 4167269
    Abstract: Flexible disk record storage apparatus has a chordally perturbed backing plate for inducing a dynamic stiffness in a flexible recording disk rotating immediately adjacent the plate. A head radially movably disposed between the chordal perturbations provides reliable recording and playback. A web portion of the backing plate has a predetermined flatness circumscribing a transducing location for enhancing recording and playback quality.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: September 11, 1979
    Assignee: International Business Machines Corporation
    Inventors: Michael R. Hatchett, Leonard J. Rigbey
  • Patent number: 4131199
    Abstract: A record disk cartridge has a single internal shutter for opening and closing a head access port adjacent a spindle access member in one wall. A further aperture allows the shutter to be actuated to an open position as the cartridge is moved into a playing position. The shutter also brakes the disk against movement when the cartridge apertures are closed. A magnetic coupling enables rotation of the disk inside the cartridge.
    Type: Grant
    Filed: October 27, 1977
    Date of Patent: December 26, 1978
    Assignee: International Business Machines Corporation
    Inventors: Michael R. Hatchett, Leonard J. Rigbey