Patents by Inventor Erick A. Sandoval

Erick A. Sandoval 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).

  • One step square hole drill bit
    Patent number: 5000628
    Abstract: A new square hole cutter is designed so as to be as compact as possible with minimal clearance space between each individual component. The rotating cutting gears are one piece items that attach to a central hub. The drive shaft and central drive gear are disposed through the central hub. The central drive gear is removable by pulling it over the drive shaft, thereby allowing the drive shaft to quickly removed. The whole cutting unit is easily and quickly assembled and disassembled.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: March 19, 1991
    Inventor: Erick A. Sandoval