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Machine translation
1. (WO1980001373) DEVICE FOR THE MODIFICATION OF THE INCIDENT ANGLE OF THE BLADE OF A PROPELLER WITH SWIVELLING BLADES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001373    International Application No.:    PCT/AT1980/000001
Publication Date: 10.07.1980 International Filing Date: 09.01.1980
IPC:
B63H 3/02 (2006.01)
Applicants:
Inventors:
Priority Data:
152/79 09.01.1979 AT
Title (EN) DEVICE FOR THE MODIFICATION OF THE INCIDENT ANGLE OF THE BLADE OF A PROPELLER WITH SWIVELLING BLADES
(FR) DISPOSITIF POUR LA MODIFICATION DE L"ANGLE D"INCIDENCE DES PALES D"UNE HELICE A PALES ORIENTABLES
Abstract: front page image
(EN)To modify the incident angle of propeller blades (13), the control mechanism (27) operated by a fluid pression presents an annular piston (31) which moves in a cylinder (28) and around a shaft (42). Helicoidal guides (43, 44) are planned between the piston (31) and its shaft (42) and/or the internal wall of the pressure cylinder (28). During the axial motion of the piston (31), these guides impart a rotational motion to the shaft. On that portion of the shaft (42) which emerges from the cylinder (28) a gear pinion is affixed conveying the motion of the piston to each of the swivel pins of the blade. Each swivel pin is doubly affixed by means of the blade and its ends (20) in a section of operating shaft.
(FR)Pour modifier l"angle d"incidence des pales d"helice (13), le mecanisme de reglage (27) manoeuvrable par un fluide de pression presente un piston annulaire (31) qui se meut dans un cylindre (28) et sur un axe (42). Des guides helicoidaux (43, 44) sont prevus entre le piston (31) et son axe (42) et/ou la paroi interieure du cylindre de pression (28). Lors du mouvement axial du piston (31), ces guides donnent a l"axe (42) un mouvement tournant. Sur la partie de l"axe (42) qui sort du cylindre (28) un pignon d"engrenage est fixe transmettant le mouvement du piston (31) a chacun des tourillons (16) des pales. Chaque tourillon (16) est doublement fixe au moyen de la pale et son extremite (20) dans un troncon de l"arbre d"entrainement.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)