Patents by Inventor Margaret Hetfield

Margaret Hetfield 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: 6311896
    Abstract: A compact optical code reader is disclosed having multiple functions and a unique shape and configuration of actuators and indicators. A system including the reader also includes a cradle, interface and host terminal, capable of performing various data processing functions involving scanned data.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: November 6, 2001
    Assignee: Symbol Technologies, Inc.
    Inventors: Altaf Mulla, Edward Barkan, Lisa Fan, Gregory James, Margaret Hetfield, Joseph Giordano, Yuri Gofman, Robert Sanders, Daniella Strat
  • Patent number: 6098877
    Abstract: An electrical interface for a scan engine includes a plurality of control pins including a range limiter mode pin, laser enable and scan enable pins, a signal output pin and a start-of scan indicator pin. Operation of the scan engine can thus be controlled to reduce power consumption and laser on-time as desired.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: August 8, 2000
    Assignee: Symbol Technologies, Inc.
    Inventors: Ed Barkan, Philip Swift, Paul Dvorkis, John Lert, Margaret Hetfield, Patrick J. Salatto
  • Patent number: 5979764
    Abstract: An electronic apparatus such as a computer terminal, video camcorder, portable picture phone or a bar code reader includes a display which is arranged to pivot so as to provide optimum ease of viewing for the user. A reader such as an optical scanner for scanning indicia, for example bar code symbols, comprises a handle portion and, mounted pivotally thereon, a head portion. The angle of the head portion relative to the handle portion can be adjusted by rotating the head portion as desired. The reader can thus be used to read bar code symbols that would otherwise be inaccessible. In an alternative embodiment a reading head is mounted pivotally on a fixed terminal and is movable so as to accommodate the physical requirements of the operator.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: November 9, 1999
    Assignee: Symbol Technologies, Inc.
    Inventors: Thomas Swyst, David Honan, Alan D. Ball, Andrew Philip Tosh, Philip Swift, Jonathan Marks, Margaret Hetfield, Lee Raymond, Richard Isaac
  • Patent number: 5363578
    Abstract: An identification panel for a cabinet for electronic equipment, such as computers or computer peripherals. A back panel is mounted to an intermediate window and doorframe member having a control door frame, and a translucent window aligned with the back panel. The back panel may incorporate permanent identifying artwork for the equipment. This assemblage is accommodated in an opening of, and secured to, an external cover frame. The cover frame opening also accommodates a control panel door mounted on the intermediate window and doorframe member to cover the doorframe opening and slidable behind the translucent window to uncover the doorframe opening. The translucent window has a part-cylindrical convex surface which projects through the cover frame opening to provide a lens effect which enhances the visibility of artwork provided on the back panel.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: November 15, 1994
    Assignee: Digital Equipment Corporation
    Inventors: David Chesley, Deborah Falck, Robert L. Hanson, Margaret Hetfield
  • Patent number: 5162980
    Abstract: An EMI/RFI shielded printed circuit board housing of compact design suitable for computer system products (such as, e.g., bridges and repeaters) permits such products to be used on office work surfaces or in a wall-mounted, high density storage system within an office environment. The housing has a five-sided printed-circuit-board container with a back wall defining at least on window for exposing an electrical connector that requires access from the exterior of the container, a removable front cover, a removable trough-shaped rear cover for covering the container back wall and protecting the exposed connector located thereat. The back wall is equipped with support features for permitting the housing to be supported in the high density storage system during use. The container and front cover have a plurality of interior surfaces coated with an EMI/RFI shielding material.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: November 10, 1992
    Assignee: Digital Equipment Corporation
    Inventors: Stuart K. Morgan, Michael Romm, Gary Vacon, John Visser, Margaret Hetfield, Peter Bellomo
  • Patent number: D389465
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: January 20, 1998
    Assignee: Symbol Tecnologies, Inc.
    Inventors: Fred Heiman, Robert E. Beach, Margaret Hetfield
  • Patent number: D414172
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: September 21, 1999
    Assignee: Symbol Technologies, Inc.
    Inventors: Margaret Hetfield, Philip Leveridge, Thomas Hofbauer, Daniel Tagtow
  • Patent number: D414760
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: October 5, 1999
    Assignee: Symbol Technologies, Inc.
    Inventors: Margaret Hetfield, Philip Leveridge, Thomas Hofbauer, Daniel Tagtow
  • Patent number: D419548
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: January 25, 2000
    Assignee: Symbol Technologies, Inc.
    Inventors: Gregory G. Jones, Margaret Hetfield, Altaf Mulla, Robert Sanders