Patents by Inventor James K. Wheeler

James K. Wheeler 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).

  • Emergency local switching
    Patent number: 5418776
    Abstract: Disclosed is an apparatus and method for providing transmission between end users coupled to a digital loop carder access system. During normal operation, the access system functions to transmit data and supervisory signals between each end user and a local digital switch. In the event of a failure in the coupling between the access system and switch, the access system provides transmission paths between each end user and designated users such as emergency services which am coupled to the same access system.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: May 23, 1995
    Assignee: AT&T Corp.
    Inventors: Robert C. Purkey, Steven P. Spencer, James K. Wheeler