Patents by Inventor Leif A. Halvorsen, Jr.

Leif A. Halvorsen, Jr. 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).

  • Patent number: 7090271
    Abstract: An exemplary embodiment of a sling for moving objects includes a sheet of flexible material having opposite first and second sides, longitudinally spaced apart transversely extending first and second side edges, transversely spaced apart longitudinally extending third and fourth side edges, transversely extending first and second edge loops along the first and second side edges respectively, and transversely extending intermediate loops attached to the sheet and longitudinally spaced apart between the first and second side edges. First and second elongated element may be disposed through first and second one of the loops, respectively, and cut-out sections positioned between distal ends of the loops. A more particular embodiment of the sheet includes longitudinally extending edge loops attached along the third and fourth side edges, longitudinally extending intermediate loops attached to the second side, and the transversely extending intermediate loops attached to the first side.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: August 15, 2006
    Inventor: Leif A. Halvorsen, Jr.
  • Patent number: 6033213
    Abstract: An apparatus for heating plastic pipe includes an outer housing having distal first and second open ends and a diffuser plate mounted inside of and spaced apart from the top of the outer housing. An inlet extending through the housing is positioned for directing heated air to impinge on the diffuser plate. A mount positions the diffuser plate within the housing such that when the plastic pipe is disposed in the housing through the open ends of the diffuser plate does not contact the pipe. First and second end caps are disposed at the distal first and second open ends respectively. The end caps have first and second apertures therethrough for supporting and centering the plastic pipe such that the diffuser plate does not contact the pipe.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: March 7, 2000
    Inventor: Leif A. Halvorsen, Jr.