Patents Assigned to CANADIAN FOUR LTD.
  • Ground Excavation Preparation System
    Publication number: 20130312733
    Abstract: A ground excavation preparation apparatus for thawing a frozen ground surface prior to excavation, consisting of a trailer; a housing connected to the trailer; mobility means attached to the trailer for moving the apparatus; heat generation means above the housing for supplying thawing energy; heat distribution means within the housing for transferring heat into the ambient air within the housing; and hydraulic means connecting the trailer to the housing for raising and lowering the housing at an excavation site.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 28, 2013
    Applicant: CANADIAN FOUR LTD.
    Inventor: Trevor Sorken