Patents by Inventor Thomas P. McNamara

Thomas P. McNamara 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).

  • Bus condition monitoring system
    Patent number: 8981945
    Abstract: A method and system is disclosed for monitoring switchgear. The current supplied to the main bus is measured. The current flowing through a plurality of feeder circuits is also measured. The temperature of the main bus at one or more nodes is measured, wherein a node is a connection point between the main bus and each feeder circuit. The current flowing through one of the nodes is determined by subtracting the current flow through each the feeder circuit upstream from the node, from the current supplied by the input circuit. An alarm condition is determined if the temperature at a node exceeds a predetermined temperature value for a given current flow through the node. The alarm condition is thereafter displayed to a switchgear operator.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: March 17, 2015
    Assignee: ABB Research Ltd.
    Inventors: Thomas P. McNamara, Harshavardhan M. Karandikar, Marek Budyn, Michael G. Urmson
  • Bushing assembly for draw-out circuit breaker
    Patent number: 8681481
    Abstract: A rear panel for a draw-out circuit breaker includes a metal plate having a pair of rectangular cutouts. Two bushing blocks are joined together and at least partially extend through the cutouts. Each molded bushing block includes three bushings, each of which carry an electrical conductor that is over-molded therein.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: March 25, 2014
    Assignee: ABB Technology AG
    Inventors: Robert A. Patten, Robert S. Karnbach, Thomas P. McNamara
  • BUS CONDITION MONITORING SYSTEM
    Publication number: 20120194344
    Abstract: A method and system is disclosed for monitoring switchgear. The current supplied to the main bus is measured. The current flowing through a plurality of feeder circuits is also measured. The temperature of the main bus at one or more nodes is measured, wherein a node is a connection point between the main bus and each feeder circuit. The current flowing through one of the nodes is determined by subtracting the current flow through each the feeder circuit upstream from the node, from the current supplied by the input circuit. An alarm condition is determined if the temperature at a node exceeds a predetermined temperature value for a given current flow through the node. The alarm condition is thereafter displayed to a switchgear operator.
    Type: Application
    Filed: July 8, 2009
    Publication date: August 2, 2012
    Applicant: ABB Research Ltd
    Inventors: Thomas P. McNamara, Harshavardhan M. Karandikar, Marek Budyn, Michael G. Urmson
  • BUSHING ASSEMBLY FOR DRAW-OUT CIRCUIT BREAKER
    Publication number: 20120182669
    Abstract: A rear panel for a draw-out circuit breaker includes a metal plate having a pair of rectangular cutouts. Two bushing blocks are joined together and at least partially extend through the cutouts. Each molded bushing block includes three bushings, each of which carry an electrical conductor that is over-molded therein.
    Type: Application
    Filed: September 14, 2010
    Publication date: July 19, 2012
    Applicant: ABB Technology AG
    Inventors: Robert A. Patten, Robert S. Kambach, Thomas P. McNamara