Patents by Inventor Douglas W. Ray

Douglas W. Ray 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).

  • Fluid control assembly
    Patent number: 5988652
    Abstract: A fluid control assembly that includes fluid valving, fluid regulation, automatic safety shut-off valving and manual shut-off valving in one assembly, a novel fluid control unit that integrates the above functions in one unit, and a novel ignitor and a novel seal and diaphragm for use in the assembly.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: November 23, 1999
    Assignee: Robertshaw Controls Company
    Inventors: David D. Martin, Douglas W. Ray
  • Fluid control assembly
    Patent number: 5988215
    Abstract: A fluid control assembly that includes fluid valving, fluid regulation, automatic safety shut-off valving and manual shut-off valving in one assembly, a novel fluid control unit that integrates the above functions in one unit, and a novel ignitor and a novel seal and diaphragm for use in the assembly.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: November 23, 1999
    Assignee: Robertshaw Controls Co.
    Inventors: David D. Martin, Douglas W. Ray
  • Fluid control assembly
    Patent number: 5937846
    Abstract: A fluid control assembly that includes fluid valving, fluid regulation, automatic safety shut-off valving and manual shut-off valving in one assembly, a novel fluid control unit that integrates the above functions in one unit, and a novel ignitor and a novel seal and diaphragm for use in the assembly.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: August 17, 1999
    Assignee: Robertshaw Controls Company
    Inventors: David D. Martin, Douglas W. Ray
  • Valving assembly
    Patent number: 5791631
    Abstract: A novel valving assembly that provides redundant control, eliminates separate gasketing, and assures proper valve seating, which includes a dual valve disk construction having a laterally extending integral web membrane.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: August 11, 1998
    Assignee: Robertshaw Controls Company
    Inventors: David D. Martin, Douglas W. Ray