Patents by Inventor Frank Baldry

Frank Baldry 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).

  • Dual antenna assembly with antenna retraction inactivation
    Patent number: 5353036
    Abstract: An antenna assembly comprises an elongate antenna element (11) mounted in a support (5) and movable between a retracted position (see FIG. 2) and an extended position (see FIG. 1). A helical antenna element (12) is carried at one end of the elongate element. The support (5) comprises a pair of concentric conductors (9,10) which provide a coaxial feed to the antenna elements (11, 12). Suitably the support (5) comprises a dielectric tube (6) having respective conductive portions (9,10) provided on the inner and outer faces thereof. The elongate antenna element is slidably mounted within the central conductor (9). In the retracted position both ends of the elongate antenna element are electrically connected to the central conductor (9). The elongate antenna element is thus rendered inactive as a radiating element and essentially becomes part of the central coaxial feed coupled directly to the helical antenna element.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: October 4, 1994
    Assignee: Nokia Mobile Phones (U.K.) Limited
    Inventor: Frank Baldry
  • Recyclable cellular phone
    Patent number: D479512
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: September 9, 2003
    Assignee: New Horizons Technologies International, Inc.
    Inventors: Karen Wilson, John Georgiou, Frank Baldry