Patents by Inventor Dennis Clasen

Dennis Clasen 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).

  • Undercutter self adjusting and shock absorbing device
    Patent number: 9487921
    Abstract: A self adjusting chain mechanism for use with an undercutter attached to an excavator having hydraulic means for adjusting the undercutter; the self adjusting mechanism has a chain and sprocket assembly in a sprocket holding frame, a ram and piston, all operating in conjunction with the hydraulics of the excavator with a control system to move an adjuster shaft connected to the chain sprocket assembly, so as to cause the chain to tighten in response to the changes in hydraulic pressure.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: November 8, 2016
    Assignee: DYMAX, INC.
    Inventors: Dennis Clasen, Harold Fechter
  • Undercutter device
    Patent number: 8904676
    Abstract: An undercutter attachable to utility machines has a bar with chain having teeth for cutting into rock beds, whereby the chain rotates about the bar. The bar has removable top and bottom portions, which when in place and secured, provide a channel for the chain, and when the top and bottom portions are removed, allow for replacement of worn parts without loosening or removing the chain.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: December 9, 2014
    Assignee: Dymax, Inc
    Inventors: Dennis Clasen, Scott Balderson, Harold Fechter
  • Undercutter Device
    Publication number: 20110083346
    Abstract: An undercutter having removable top and bottom portions, which when in place and secured, provide the channel means for the chain, and when removed, allow for replacement of worn parts without loosening or removing the chain.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 14, 2011
    Applicant: New Dymax, Inc.
    Inventors: Dennis Clasen, Scott Balderson, Harold Fechter