Boat propeller capable of being easily changed in pitch thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 14, 2003
Grant Date -
Dec 5, 2002
app pub date -
May 29, 2001
filing date -
May 29, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A boat propeller comprises a hub formed of a front cylindrical member and a rear cylindrical member. The hub is provided in the joining place with a plurality of receiving cavities which are arranged equiangularly and circularly. Each cavity is provided removably with an angle setting member which is joined with the hub. A plurality of blades are joined with the outer periphery of the hub such that the inner ends of the blades are inserted into the cavities and are located by the angle setting members. Under the circumstance that the shapes of the hub and the blades remain unchanged, the blade pitch in relation to the hub can be changed by the angle setting members of various shapes.
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