Patents by Inventor David L. Schaum

David L. Schaum 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: 4877204
    Abstract: A tilt/swivel display base for a product such as video display terminals and similar devices. The base contains few moving parts and results in only a limited displacement above the work surface. The display base has one or more rocker legs which have arcuate cross sections. The rocker legs allow forward and backward tilting of the video display terminal. Locking wedges are provided to stabilize the display base in a selected position. Swiveling is accomplished by rotating the entire video display terminal and display base about a vertical axis. Rotation about a vertical axis is possible due to the small area of contact between the display base rocker legs and the work surface. The locking wedges are maintained in position by locking wedge flanges with mate with a groove in the rocker leg. A tensioning device is provided to insure constant pressure between the locking wedge and the rocker leg. A stop can be incorporated on the rocker legs to prevent excessive tilting.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: October 31, 1989
    Assignee: International Business Machines Corporation
    Inventors: Joseph A. Gregory, David L. Schaum
  • Patent number: D264466
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: May 18, 1982
    Assignee: International Business Machines Corporation
    Inventors: Arnold M. Davis, David L. Schaum
  • Patent number: D290612
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: June 30, 1987
    Assignee: International Business Machines Corp.
    Inventors: Robert E. Choate, David L. Schaum, Robert E. Steinbugler
  • Patent number: D290704
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: July 7, 1987
    Assignee: International Business Machines Corporation
    Inventors: David L. Schaum, Joseph P. Taylor
  • Patent number: D291696
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: September 1, 1987
    Assignee: International Business Machines Corp.
    Inventors: David L. Schaum, Robert E. Steinbugler, Jonathan J. Vitello
  • Patent number: D291806
    Type: Grant
    Filed: October 24, 1984
    Date of Patent: September 8, 1987
    Assignee: International Business Machines Corporation
    Inventors: Ronald I. Conway, Samuel A. Lucente, David L. Schaum
  • Patent number: D300030
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: February 28, 1989
    Assignee: International Business Machines Corporation
    Inventors: William H. Barrett, Joseph A. Gregory, Lisa M. Mohr, Louis J. Remsburger, David L. Schaum
  • Patent number: D303659
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: September 26, 1989
    Assignee: International Business Machines Corporation
    Inventors: William B. Phillips, David L. Schaum
  • Patent number: D304635
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: November 14, 1989
    Assignee: International Business Machines Corporation
    Inventors: William H. Barrett, Joseph A. Gregory, Lisa M. Mohr, David L. Schaum
  • Patent number: D307419
    Type: Grant
    Filed: December 9, 1986
    Date of Patent: April 24, 1990
    Assignee: International Business Machines Corporation
    Inventor: David L. Schaum
  • Patent number: D308360
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: June 5, 1990
    Assignee: International Business Machines Corporation
    Inventor: David L. Schaum
  • Patent number: D308855
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: June 26, 1990
    Assignee: International Business Machines Corporation
    Inventor: David L. Schaum
  • Patent number: D309896
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: August 14, 1990
    Assignee: International Business Machines Corporation
    Inventor: David L. Schaum
  • Patent number: D310535
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: September 11, 1990
    Assignee: International Business Machines Corporation
    Inventors: William H. Barrett, Joseph A. Gregory, Lisa M. Mohr, David L. Schaum
  • Patent number: D311180
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: October 9, 1990
    Assignee: International Business Machines Corporation
    Inventor: David L. Schaum
  • Patent number: D311913
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: November 6, 1990
    Assignee: International Business Machines Corporation
    Inventor: David L. Schaum