Patents by Inventor Harold Welbon

Harold Welbon 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).

  • Unidirectional drive hand operated wrench
    Patent number: 4357844
    Abstract: A hand operated wrench in which the driver head is rotated in the same direction regardless of the direction of movement of the wrench handle. In a first embodiment, the wrench includes nested handles operating bevel gears having shiftable pawls for reversing the direction of rotation of the driver head. In a second embodiment, the wrench includes clustered spur gears having individually operated pawls for reversing the direction of rotation of the driver head.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: November 9, 1982
    Inventor: Harold Welbon