Fluid reaction surfaces (i.e. – impellers) – With weight-balancing means
Patent
1979-01-08
1981-11-24
Vrablik, John J.
Fluid reaction surfaces (i.e., impellers)
With weight-balancing means
416230, 416241A, 416248, B64C 1106, B64C 1126
Patent
active
043021557
ABSTRACT:
An adjustable pitch aircraft propeller has peripherally spaced composite blades each including an elongated core of expanded rigid foam material extending from a metal base member having a reduced neck portion and an outwardly projecting flange portion. A casing or skin of plastic resin impregnated fabric material surrounds the core of each blade and extends inwardly along the neck portion and also has a flange portion overlying the flange portion of the base member. The skin material overlying the neck portion of the base member is retained by a filament winding impregnated with plastic resin, and the blade is coupled to the propeller hub by an annular lip portion which projects inwardly and overlies the flange portion of the skin material. The foam core of each propeller blade has longitudinally extending slots, and strips of resin impregnated fabric material extend through the slots to form corresponding webs which connect the skin material forming opposite side of the propeller blade.
REFERENCES:
patent: 1503170 (1924-07-01), Smith
patent: 2182812 (1939-12-01), Lougheed
patent: 2240873 (1941-05-01), Thomas
patent: 2306177 (1942-12-01), Mattson
patent: 2465007 (1949-03-01), Bragdon et al.
patent: 2485827 (1949-10-01), Hartzell
patent: 2659444 (1953-11-01), Stanley
patent: 2765859 (1956-10-01), Hartzell et al.
patent: 3021246 (1962-02-01), Hutter et al.
patent: 3321019 (1967-05-01), Dmitroff et al.
patent: 3380535 (1968-04-01), Biermann
patent: 3477796 (1969-11-01), Weiland
patent: 3554664 (1971-01-01), Cheeseman et al.
patent: 3637325 (1972-01-01), Morley
patent: 3664764 (1972-05-01), Davies et al.
patent: 3695778 (1972-10-01), Taylor
patent: 4097189 (1978-06-01), Harlamert
Grimes Richard V.
Harlamert W. Benjamin
Thompson David F.
Hartzell Propeller Inc.
Vrablik John J.
LandOfFree
Air craft propeller assembly with composite blades does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Air craft propeller assembly with composite blades, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air craft propeller assembly with composite blades will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2172255