Patents by Inventor Eddie Hofmeister

Eddie Hofmeister 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).

  • Propeller with annular connecting element interconnecting tips of blades
    Patent number: 6102661
    Abstract: A propeller (10) including a hub (11), a plurality of blades (13) extending outwardly from the hub (11) and part annular connecting elements (17) which interconnect tips (16) of adjacent blades (13). The trailing edges (21) of the elements (17) extend from the trailing edge of one blade (13) at its tip to intersect the adjacent blade (13) at a relief point (23) on the high pressure side of the blade (13) between the leading and trailing edges of the blade (13). The leading edge (20) of the elements (17) extends from the leading edge of a blade (13) at its tip (16) to intersect the adjacent blade (13) at a relief point (25) on the low pressure side of the blade (13) intermediate the leading and trailing edges of the blade (13) at its tip (16).
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: August 15, 2000
    Assignee: SPI LTD
    Inventors: Martin Robson, Eddie Hofmeister