Patents by Inventor Allen L. Luft

Allen L. Luft 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).

  • Tilt mechanism for portable hoist
    Patent number: 5105913
    Abstract: A portable telescopic hoist has an auxiliary tilt-back frame at the rear for supporting the hoist when it is tilted from its normal upright position to a backward sloped position to clear an overhead restriction. The tilt-back frame has a strut with a gas spring therein having a nearly constant spring force. This strut has a downwardly sloped operating position from a detachable connection at the back of the mast of the hoist.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: April 21, 1992
    Assignee: Genie Industries, Inc.
    Inventors: Willibald Neubauer, Allen L. Luft, Michael C. Burkey