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).

  • Publication number: 20050132860
    Abstract: A traversing circular saw device having a saw blade assembly mounted onto a cradle which can receive a number of logs to be cut into sections. The saw blade assembly includes a circular saw blade mounted onto an extension arm which is contained within an arm sleeve. The width of the cradle is greater than the diameter of the saw blade. The saw blade is extended across the cradle by a piston. One embodiment of the invention includes a charge accumulator for the hydraulic system which can time-delay engagement of the extension means. The system can also include a flow control valve for varying the time delay of the charge accumulator.
    Type: Application
    Filed: May 5, 2004
    Publication date: June 23, 2005
    Inventor: Doug Mains
  • Publication number: 20020092393
    Abstract: A traversing circular saw device having a saw blade assembly mounted onto a cradle which can receive a number of logs to be cut into sections. The saw blade assembly includes a circular saw blade mounted onto an extension arm which is contained within an arm sleeve. The width of the cradle is greater than the diameter of the saw blade. The saw blade is extended across the cradle by a piston. One embodiment of the invention includes a charge accumulator for the hydraulic system which can time-delay engagement of the extension means. The system can also include a flow control valve for varying the time delay of the charge accumulator.
    Type: Application
    Filed: June 1, 2001
    Publication date: July 18, 2002
    Inventor: Doug Mains
  • Patent number: 5408907
    Abstract: A traversing circular saw device comprising a saw blade assembly mounted onto a cradle to receive a number of logs to be cut into sections. The saw blade assembly comprises a circular saw blade mounted onto an extension arm which is contained within a pivoting arm sleeve. The width of the cradle is greater than the diameter of the saw blade. The saw blade is pivoted down into the cradle by a first piston, and the blade is then extended across the cradle by a second piston.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: April 25, 1995
    Assignee: Rhino Corporation
    Inventor: Doug Mains
  • 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
  • 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