Patents by Inventor Mark C. Karpoff

Mark C. Karpoff 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: 20100096374
    Abstract: An invention is provided which comprises a welding gun assembly having a handle portion which is rotatable with respect to a fume tube assembly and a hose assembly to which it is coupled. The gun assembly employs a locking collar to secure the fume tube assembly to the handle portion which allows the handle portion to be positioned in any positioned within 360 degrees of a normal position, without the need for reconfiguring any other portion of the gun assembly.
    Type: Application
    Filed: October 20, 2008
    Publication date: April 22, 2010
    Applicant: LINCOLN GLOBAL, INC.
    Inventors: Mark C. Karpoff, Eric D. Diller
  • Patent number: 5730891
    Abstract: A platform for use in loading and supporting a gas cylinder onto a movable welder undercarriage which platform comprises a lower cylinder support pate with a rear end, a front end and a normal level cylinder supporting position; means for mounting the platform on the rear of the undercarriage to pivot about a transverse axis in a first pivot direction to a cylinder loading position with the rear end of the support plate tilted downward against the floor and in a second pivot direction with the support plate in the cylinder support position, where the weight of said cylinder is one the side of the pivot axis toward the front end of the support plate; and, stop means for preventing rotation of the platform abut the pivot axis in the second direction beyond the normal position of the support plate of the platform.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: March 24, 1998
    Assignee: The Lincoln Electric Company
    Inventors: Mark C. Karpoff, Steven J. Kelemen