Patents by Inventor Carl W Lundgren

Carl W Lundgren 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: 6643519
    Abstract: Automatic control of the power of the transmitters (161 and 162) of a near-end-far-end transceiver pair (121-141) is achieved by first determining whether the strength of the signals received at near-end and far-end receivers (181 and 182) of the near-end-far-end transceiver pair are simultaneously attenuated a prescribed value below received signal strength values measured during clear weather free-space conditions. If the received signal strengths are so attenuated, then transmission power of the near-end and far-end transceivers is increased by predetermined increments (or sequences or increments) to restore, but not exceed the strengths of the received signals to their respective signal strength values measured during clear weather free-space conditions. Conversely, if the above received signal strengths are determined not to be simultaneously attenuated by the said prescribed value, when one near-end or far-end received signal only is determined to be degraded (e.g.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: November 4, 2003
    Assignee: AT&T Corp.
    Inventor: Carl W Lundgren
  • Patent number: 6018325
    Abstract: An antenna mounting system has a pole secured at a first end to a base. A platform is connected to the pole via a tiltable joint which is rotationally fixed with respect to the pole. An antenna is secured to the platform, having a beam which is aligned to a desired elevation and azimuth orientation. Three flexible cables are connected at their first ends to the platform and at their second ends to a fixed reference plane mounting member which is rotationally fixed to the pole nearer its first end. The force of high winds will cause the pole to bend and, if unaccounted for, change the planar orientation of the platform and mispoint the beam. The platform, mounting member, and cables form a system of parallelograms whose sides remain parallel when the pole is deflected. Thus, the platform maintains its original angular orientation as the pole bends, preserving the desired orientation of the beam.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: January 25, 2000
    Assignee: AT&T Corp
    Inventor: Carl W. Lundgren