Patents Assigned to United Gas Industries Limited
  • Electrical controls for heating appliances
    Patent number: 4180380
    Abstract: This invention relates to a particularly safe electrical control device for a gas or oil-fired heating appliance comprising a plurality of sub-circuits each carrying out part of a start-up sequence for the appliance, and arranged so that should any sub-circuit fail, the start-up sequence ceases.Parts of the control device are similar to those shown in British Patent Specification No. 1,314,185. (U.S.Pat. No. 3,674,410).
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: December 25, 1979
    Assignee: United Gas Industries Limited
    Inventor: Ronald W. Davies
  • Valves
    Patent number: 4092994
    Abstract: A floating O-ring is located between a valve plate and a valve seat to seal the valve, and is prevented from slipping out of alignment with the seat by cylindrical or conical guide structure.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: June 6, 1978
    Assignee: United Gas Industries Limited
    Inventor: Eric McGowan
  • Thermal system
    Patent number: 4036059
    Abstract: This invention relates to thermal system comprising a phial of liquid and a capillary tube leading therefrom, the phial experiencing a high temperature which progressively drops along the length of the capillary. To avoid unnecessary expense, the phial and an appropriate length of capillary tube are formed of highly corrosion-resistant metal while the rest of the capillary is formed of cheaper metal.
    Type: Grant
    Filed: January 20, 1976
    Date of Patent: July 19, 1977
    Assignee: United Gas Industries Limited
    Inventor: Thomas Charles Cliff