Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including movement limit stop or damping means
Patent
1980-07-14
1981-10-27
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Including movement limit stop or damping means
416107, 416143, B63H 122
Patent
active
042970792
ABSTRACT:
A variable pitch marine propeller having a plurality of circumferentially spaced apart blades mounted on axles at the root portion of the blades in a hub to permit independent movement of each of the blades about an axis of rotation substantially parallel to the axis of the hub between a first nested position adjacent the hub and a second extended position. Each of the blades includes leading and trailing striking surfaces or root segments on the root portion of the blades which are hub engageable upon initial rotation of the blade in either direction. Intermediate the leading and trailing segments of the blades are positioned cushioning means which may be mounted in either the hub or the blade root segments for inhibiting the shock of engagement of the blades and the hub upon initial start up of rotation of the hub or upon a sudden reversal of rotation of the hub. The cushioning means includes water entrance and graduated exit means with means to capture water therein to act as a shock absorber for the blades against the hub.
REFERENCES:
patent: 2608257 (1952-08-01), Godfrey
patent: 2638171 (1953-05-01), Foss
patent: 2885012 (1959-05-01), Heintzelman
patent: 3358773 (1967-12-01), Oldberg
patent: 3565544 (1971-02-01), Marshall
Dick William J.
Goodall SemiMetallic Hose & Mfg. Co.
Powell Jr. Everette A.
LandOfFree
Variable pitch marine 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 Variable pitch marine propeller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable pitch marine propeller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-277698