Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Formed with main spar
Patent
1979-03-22
1981-04-07
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Formed with main spar
416218, 416230, B64C 1120
Patent
active
042603323
ABSTRACT:
Hollow filament wound spar structure is provided adapted for rotational hub mounting under centrifugal and bending loads. The structure comprises an integrally wound, filament and resin composite spar of a predetermined wall thickness, a fitting integrally wound therein, the fitting defining rotational hub fastening means and comprising a plug having a mechanical engagement groove circumferentially of its longitudinal axis into which the opposing spar wall portion is deflected responsive to winding fabrication of the spar wall on the fitting. Belt means additionally are provided opposite the groove locally peripherally confining the deflected spar wall portion in mechanical engagement reinforcing relation, against relative dislodgement of the spar wall portion from the plug groove in the mounted condition of the spar structure, under centrifugal and bending loads.
REFERENCES:
patent: 2182812 (1939-12-01), Lougheed
patent: 2484141 (1949-10-01), Alex
patent: 3237697 (1966-03-01), Ford et al.
patent: 3303889 (1967-02-01), Bates
patent: 3349157 (1967-10-01), Parsons
patent: 3664764 (1972-05-01), Davies et al.
patent: 3713753 (1973-01-01), Brunsch
patent: 4191510 (1980-03-01), Teysseyre et al.
Morris Edgar E.
Weingart Oscar
Powell Jr. Everette A.
Structural Composite Industries, Inc.
LandOfFree
Composite spar structure having integral fitting for rotational does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite spar structure having integral fitting for rotational , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite spar structure having integral fitting for rotational will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-286897