Patents by Inventor Doug Main

Doug Main 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).

  • Socket release apparatus
    Patent number: 4218940
    Abstract: A remote socket release apparatus for wrenches wherein the release actuation operator is located on the outer end of the wrench handle.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: August 26, 1980
    Assignee: Harvey M. Main
    Inventor: Doug Main
  • Bolt starting device
    Patent number: 4128025
    Abstract: An improvement in a ratcheting socket wrench wherein an elongated shaft is journalled in the handle and is provided with a knob at the outer end of the handle. The shaft is also reciprocally disposed in the handle where in one position it can be rotated thereby rotating the drive stud for starting or removing loose bolts and the like and in a second position it may be rotated to engage the ratcheting device for drive in either direction.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: December 5, 1978
    Inventors: Harvey M. Main, Doug Main