Marine propulsion – Screw propeller – Having means to control flow around propeller
Patent
1993-09-07
1994-09-06
Avila, Stephen P.
Marine propulsion
Screw propeller
Having means to control flow around propeller
440 71, 114274, B63H 516
Patent
active
053443462
ABSTRACT:
Apparatus for improving the efficiency of a propulsion unit having a driveshaft housing depending from the stern of a boat, while protecting swimmers and the propulsion unit. A plate member has an upper end to be positioned forward of a driveshaft housing and to depend arcuately downwardly and rearwardly to terminate in a trailing lower end below a propeller. The plate member tapers outwardly along lateral edges from the upper end to the lower end to divert swimmers around and under a housing and a propeller attached thereto. The plate member reacts to the passage of water when under way to urge the boat's stern upwardly toward a more efficient operating position. The outer corner areas of the upper and lower ends are connected by outwardly curved rods to define a protection zone to protect body parts of swimmers by diverting them outwardly and downwardly under a propeller.
REFERENCES:
patent: Re18602 (1932-09-01), Svendsen et al.
patent: 1009635 (1911-11-01), Benson
patent: 1869977 (1932-08-01), Modin
patent: 2054374 (1936-09-01), Fuller
patent: 2140099 (1938-12-01), Wise
patent: 2319640 (1943-05-01), Sink
patent: 2355842 (1944-08-01), Arado
patent: 2470874 (1949-05-01), Sidney
patent: 2717570 (1955-09-01), Willoughby
patent: 2963000 (1960-12-01), Fester
patent: 2972977 (1956-07-01), Hausman
patent: 2985133 (1961-05-01), Shaffer
patent: 3965845 (1976-06-01), Lubov
patent: 4096819 (1978-06-01), Evinrude
patent: 4565533 (1986-01-01), Springer
patent: 4680017 (1987-07-01), Eller
patent: 5207605 (1993-05-01), Kroeber
Avila Stephen P.
Click Myron E.
LandOfFree
Driveshaft housing attachment does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driveshaft housing attachment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driveshaft housing attachment will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1326416