Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent
1991-07-29
1992-11-17
Denion, Thomas E.
Fluid reaction surfaces (i.e., impellers)
Having positive means for impeller adjustment
Power or manual actuator on non-rotatable part
416168R, 416114, B63H 106
Patent
active
051638150
ABSTRACT:
A rotor blade control mechanism includes a transmission driving a hollow rotating drive shaft, extending through the transmission. A rotor head is attached to a top end of the drive shaft and includes rotor blade shafts of variable pitch and having control arm and lengths for cyclic and collective variation of the rotor blade shafts. A control regulates the rotor head control and lengths and includes at least a pair of rods extending through the hollow drive shaft with upper ends operably connected to the rotor head control arm and links and lower ends terminating substantially at a drive shaft bottom end. The control includes a fork with spaced fingers at the drive shaft bottom end and a yoke with spaced arms positioned in opposed relation to the fork. The yoke has a mounting block extending between the arms with the control rod lower ends swingably connected to the mounting block. A swing pin extends perpendicular to the yoke, through the mounting block, and is retained in the fork by the spaced fingers. The control extends from the drive shaft at the bottom end and swings perpendicular to the rotation of the drive shaft, imparting a mutually variable push-pull effect to the control rods for cyclic variation. Guide channels in the spaced fingers and slide blocks mounted in the guide channels to which the swing pin is connected for up and down sliding movement of the yoke impart a unitary push-pull effect to the control rods for collective variation of the rotor blade shafts.
REFERENCES:
patent: 2499314 (1950-02-01), Hunt
patent: 2511687 (1950-06-01), Andrews
patent: 2810443 (1957-10-01), Doman
patent: 2946390 (1960-07-01), Pozgay
patent: 3109496 (1963-11-01), Ellis, III et al.
patent: 3577616 (1971-03-01), Ulisnik
patent: 3637321 (1972-01-01), Nekrasov et al.
patent: 3756743 (1973-09-01), Robertson
patent: 3885887 (1975-05-01), Desjardins
patent: 4432696 (1984-02-01), Stephan et al.
patent: 4534704 (1985-08-01), McArdle
patent: 4681511 (1987-07-01), Glatfelter
Day Wm. Bruce
Denion Thomas E.
LandOfFree
Rotor blade control mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotor blade control mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotor blade control mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1167516