Helicopter provided with a plurality of lift elements each...

Details Helicopter provided with a plurality of lift elements each... Helicopter provided with a plurality of lift elements each...

2009-02-25

2011-12-13

Wagner, Jenny L (Department: 2891)

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Lead-lag type rotor blade movement

Reexamination Certificate

active

08075269

ABSTRACT:
The present invention relates to a helicopter provided with a main rotor (1) having at least two blades (10, 20), each blade (10, 20) being provided with attachment means (11, 21) attaching it to a hub (2) of the rotor (1). The helicopter is provided with one lift element (12, 22) per blade (10, 20), said lift element being provided with a tiltable tab (19, 29), each lift element (12, 22) being mechanically connected to a single blade (10, 20) to vary the pitch of said single blade (10, 20).

REFERENCES:
patent: 2481750 (1949-09-01), Hiller, Jr. et al.
patent: 2534353 (1950-12-01), Hiller, Jr. et al.
patent: 2818123 (1957-12-01), Hiller, Jr.
patent: 6135713 (2000-10-01), Domzalski et al.
patent: 2409227 (1975-09-01), None
patent: 735571 (1955-08-01), None
French Search Report dated Oct. 15, 2008 from corresponding FR 0801077.

Affiliated with

Also associated with

Rating

Helicopter provided with a plurality of lift elements each... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Helicopter provided with a plurality of lift elements each..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helicopter provided with a plurality of lift elements each... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4306142