Patents by Inventor Davis W. Chamberlin

Davis W. Chamberlin 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).

  • Disk restraint
    Patent number: 4879621
    Abstract: A cartridge enclosing a disk-shaped magnetic recording medium is provided with a disk restraint disposed between the disk and the cartridge for sliding movement in the plane of the disk. A camming surface is provided on the cartridge which forces the restraint downwardly to restrain the disk when the cartridge is not in use. In use, the restraint is slid out of engagement with the camming surface to release the recording disk.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: November 7, 1989
    Assignees: Minnesota Mining and Manufacturing Company, Sony Corporation
    Inventors: Davis W. Chamberlin, Vurnen J. Leonard, Osamu Koizumi
  • Storage container for diskettes
    Patent number: 4815600
    Abstract: A filing rack for a plurality of diskettes arranged in a front-to-back manner includes a plurality of slots for trapping the diskettes in an upright position and a plurality of ramps for supporting a portion of each diskette in an alternative resting position. The rack includes pairs of radius surfaces which translate a horizontal force applied to the front face of a diskette in its upright position into a force which lifts the diskette from its associated slot and permits the diskette to move into its alternative resting position.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: March 28, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gerald J. Niles, Davis W. Chamberlin, Carl S. Ahlberg
  • Developer powder container
    Patent number: D248148
    Type: Grant
    Filed: November 24, 1976
    Date of Patent: June 13, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Davis W. Chamberlin