Fluid reaction surfaces (i.e. – impellers) – Spiral blade or flow passage
Reexamination Certificate
2008-06-19
2010-10-05
Edgar, Richard (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Spiral blade or flow passage
C416S22300B, C416SDIG004
Reexamination Certificate
active
07806661
ABSTRACT:
A propeller attached to an output shaft of a boat motor is provided. The propeller may have a plurality of blades which define a leading edge. The leading edge may define leading edge angles which increase in a logarithmic manner from a base of the blade to a tip of the blade. This allows the blades of the propeller to cut and shed seaweed and/or kelp off of the blades when the boat is maneuvered into waters containing seaweed and/or kelp. Additionally, boats that employ the propeller of the present invention are quieter compared to boats that utilize prior art propellers.
REFERENCES:
patent: D33386 (1900-10-01), Rondell
patent: 885174 (1908-04-01), Perkins
patent: 1363660 (1920-12-01), La Fleur
patent: 1850476 (1932-03-01), Hans
patent: 2011821 (1935-08-01), Meyer et al.
patent: 3081826 (1963-03-01), Loiseau
patent: 4482298 (1984-11-01), Hannon et al.
patent: 4775297 (1988-10-01), Bernauer
patent: 5104292 (1992-04-01), Koepsel et al.
patent: 5236310 (1993-08-01), Koepsel et al.
patent: 5249993 (1993-10-01), Martin
patent: 5352093 (1994-10-01), Hannon et al.
patent: 6702552 (2004-03-01), Harman
patent: 7025642 (2006-04-01), Baylor
patent: D562215 (2008-02-01), Schulze
Lear Baylor, Inc. “Lear Letric Propulsion System”; Website Article http://www.learbaylor.com; pp. 1-2.
Duffield Marine, Inc.
Edgar Richard
Stetina Brunda Garred & Brucker
LandOfFree
Propeller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Propeller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propeller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4198093