Patents by Inventor Duane C. Sherman

Duane C. Sherman 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).

  • Patent number: 7152325
    Abstract: The powered tubing cutter is a hand held, mechanical device driven by a motor for cutting tubing/piping. The device comprises a housing, a drive plate, a main drive shaft, a cutting assembly having a cutting blade, a cam plate and a chain drive secured to a motor housing, having a handle, by a mounting bracket. The chain drive is powered by the motor, which causes the main drive shaft to rotate. The cutting assembly is pivotally secured to a pin on the main drive shaft. The pipe/tube to be cut is placed into the hole in the center of the housing and the main drive shaft. As the cutting assembly rotates with the main drive shaft the cam plate forces the cutting blade into cutting engagement with the tube/pipe.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: December 26, 2006
    Inventors: Carroll D. Green, Duane C. Sherman