Patents by Inventor William P. McNally

William P. McNally 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).

  • Heat-activated flue damper actuator
    Patent number: 5447125
    Abstract: A heat activated flue damper actuator employing an assembly of shape memory alloy springs with linkages to a conventionally designed contemporary flue damper. The combination of the spring material, spring configuration and dimensions, linkage/fastening scheme to the flue damper shaft and placement in the water heater's heating chamber are all controlled to optimize the energy efficiency of a conventionally designed, pilot-lit or pilotless ignition, contemporary gas water heater.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: September 5, 1995
    Inventors: William P. McNally, Richard W. Ranlet
  • Heat-activated flue damper actuator
    Patent number: 5393221
    Abstract: A heat activated flue damper actuator employing an assembly of shape memory alloy springs with linkages to a conventionally designed contemporary flue damper. The combination of the spring material, spring configuration and dimensions, linkage/fastening scheme to the flue damper shaft and placement in the water heater's heating chamber are all controlled to optimize the energy efficiency of a conventionally designed, pilot-lit or pilotless ignition, contemporary gas water heater.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: February 28, 1995
    Inventor: William P. McNally