Patents by Inventor William Kinghorn

William Kinghorn 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).

  • Ringing generator for telephones
    Patent number: 5442698
    Abstract: A ringing generator includes a binary signal source generating a waveform with eight degrees of freedom controlled to suppress or cancel certain harmonics to produce a binary low frequency signal substantially free of low frequency components other than the desired ringing frequency. The binary signal is amplified and filtered to remove unwanted frequency components above a certain threshold to produce a substantially sinusoidal ringing signal.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: August 15, 1995
    Assignee: ADC Telecommunications, Inc.
    Inventor: William Kinghorn
  • Patch panel for high speed twisted pair
    Patent number: 5269708
    Abstract: A patch panel includes a printed circuit board, an RJ-45 jack and a connector block. The circuit paths from the RJ-45 jack to the connector block are selected to cross in a predetermined crossing pattern with the circuit paths having a predetermined length selected for the patch panel to carry high speed transmissions.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: December 14, 1993
    Assignee: ADC Telecommunications, Inc.
    Inventors: David M. DeYoung, William A. Kinghorn