Patents by Inventor Willie A. Curry

Willie A. Curry 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).

  • Resistance sensing free-point tool
    Patent number: 3934466
    Abstract: An improved free-point measuring system for indicating whether a pipe in a borehole is free or stuck at various locations within the borehole is disclosed. The system employs an improved free-point tool in which is mounted a variable resistor having a wiper arm adapted to be displaced with a movement of the pipe. Displacement of the wiper arm causes a change in the resistance of the variable resistor, and this change is detected by a surface unit provided with balancing and calibrating resistors.
    Type: Grant
    Filed: May 16, 1974
    Date of Patent: January 27, 1976
    Assignee: Jude Thaddeus Fanguy
    Inventor: Willie A. Curry