Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Motor bodily rotatable with impeller hub or shaft
Patent
1983-03-04
1984-10-02
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Having positive means for impeller adjustment
Motor bodily rotatable with impeller hub or shaft
416167, B63H 308
Patent
active
044745338
ABSTRACT:
The assembly includes a propeller shaft, a hollow hub closed at one end and secured at its other end to said shaft, a space being formed within said hub, said hub carrying blades which are rotatably driven by said shaft and hub and are changeable in pitch, a crosshead supported within said space for axially reciprocatable movement and coupled to said blades so as to change the pitch of said blades as said crosshead reciprocates, said crosshead having an end part adjacent said shaft and said end part forming a piston that is slidable on the inner surface of said hub, said piston defining on one side thereof a first chamber formed by said piston, said hub and said output end of said shaft, and defining a second chamber on its opposite side, formed by said piston and said hub, each of said chambers being adapted to be supplied individually with hydraulic fluid. The blades are rotatably connected to the hub, and the connection includes two spaced seals. The space between the seals is filled with pressurized oil which lubricates the connection and seals it against water.
REFERENCES:
patent: 1510436 (1924-09-01), Englesson
patent: 2527112 (1950-10-01), Willis et al.
patent: 3229771 (1966-01-01), Hedberg
patent: 3245497 (1966-04-01), Yokoi
patent: 3247908 (1966-04-01), Robook et al.
patent: 3501251 (1970-03-01), Haglund et al.
patent: 3792937 (1974-02-01), Chilman
patent: 3802800 (1974-04-01), Merkx et al.
patent: 4028004 (1977-06-01), Wind
patent: 4037986 (1976-07-01), Chilman
patent: 4132503 (1979-01-01), Kreft et al.
Brochure: Kawasaki KT-N Side Thruster, Apr. 1980.
East German Magazine: Seewirtschaft, 6/1977, pp. 331-336.
Kawasaki Jukogyo Kabushiki Kaisha
Powell Jr. Everette A.
LandOfFree
Controllable pitch propeller assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Controllable pitch propeller assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controllable pitch propeller assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-525050