Patents Assigned to Edward H. Smith
  • Patent number: 4632636
    Abstract: A propeller (10) including a hub (12) and a plurality of blades (16) having a leading edge (22), outside edge (24), tail edge (26) and inside edge (28). Each of the blades (16) extend substantially radially from the hub (12) and include a body portion having a regressive pitch from the leading edge (22) to the tail edge (26) and cupped portions (30) and (32) extending along the inside edge (28) and outside edge (24), respectively. A method of making the propeller (10) includes the steps of forming the hub (12) and forming the plurality of blades (16) having a regressive pitch and extending substantially radially from the hub and forming the first cupped portion (30) extending along the inside edge (28) and the second cupped portion (32) extending along the outside edge (24).
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: December 30, 1986
    Assignee: Edward H. Smith
    Inventor: William H. Smith