Patents by Inventor David E. Wendell

David E. Wendell 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).

  • Thread cleaning device
    Patent number: 4334334
    Abstract: A thermowell or the like is installed in a pipe or similar member without taking the member out of service by first welding an adapter to the surface of the member at the point where the thermowell is to be installed, connecting a gate valve and hot tapping machine to the adapter, drilling a hole in the member through the open gate valve, withdrawing the drill and closing the valve, replacing the drill in the hot tapping machine with the thermowell, opening the gate valve, and installing the thermowell through the open valve. The adapter having a taper internally threaded portion, distal from the ends of a conduit therethrough. A thread chaser or cleaning device to remove particles from the internal threads of the adapter is provided.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: June 15, 1982
    Inventor: David E. Wendell
  • Hot tap apparatus and method
    Patent number: 4332272
    Abstract: A thermowell or the like is installed in a pipe or similar member without taking the member out of service by first welding an adapter to the surface of the member at the point where the thermowell is to be installed, connecting a gate valve and hot tapping machine to the adapter, drilling a hole in the member through the open gate valve, withdrawing the drill and closing the valve, replacing the drill in the hot tapping machine with the thermowell, opening the gate valve, and installing the thermowell through the open valve. The adapter having a taper internally threaded portion, distal from the ends of a conduit therethrough.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: June 1, 1982
    Inventor: David E. Wendell
  • Hot tap apparatus and method
    Patent number: 4331170
    Abstract: A thermowell or the like is installed in a pipe or similar member without taking the member out of service by first welding an adapter to the surface of the member at the point where the thermowell is to be installed, connecting a gate valve and hot tapping machine to the adapter, drilling a hole in the member through the open gate valve, withdrawing the drill and closing the valve, replacing the drill in the hot tapping machine with the thermowell, opening the gate valve, and installing the thermowell through the open valve. The adapter having a taper internally threaded portion, distal from the ends of a conduit therethrough.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: May 25, 1982
    Inventor: David E. Wendell