ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRIS..MTNORSMESM..................JJDIM360 Ver 1.28 (29 Oct 2014) - 1620000/02363218EUROPEAN PATENT APPLICATIONA320161130EP11156338.320110301enenen2010521720100305FI2016113020164820110907201136B21D 22/02 20060101AFI20161026BHEP B63H 5/16 20060101ALN20161026BHEP deVerfahren und Vorrichtung zur Herstellung eines PropellerdüsenringsenMethod and apparatus for manufacturing propeller nozzle ringfrProcédé et appareil de fabrication d'une tuyère de propulsion3Tevo Oy1012342632100174Hiientie 1792160 SaloinenFIHirsikorpi, RistoAleksintie 592430, PaavolaFIJoensuu, TeuvoHiientie 1792160, SaloinenFIKolster Oy Ab101363959Iso Roobertinkatu 23 PO Box 14800121 HelsinkiFIALATBEBGCHCYCZDEDKEEESFIFRGBGRHRHUIEISITLILTLULVMCMKMTNLNOPLPTRORSSESISKSMTRBAME20161130201648

A method and apparatus is disclosed for manufacturing a propeller nozzle ring (230), the method comprising forming a circular mould (220) having a side profile (222) that widens towards one end (226) of the mould (220), the mould (220) being arrangeable to the neck of an end (204) of a cylinder (200) so that a first end (224) of the mould (220) is towards the interior of the cylinder (200) and a second end (226) of the mould (220) has a cross-sectional surface greater than the end (204) in question of the cylinder (200); and forcing the mould (220) into the cylinder (200) for a predetermined distance so that the outer surface of the side profile (222) of the mould (220) runs against the inner surface of the cylinder (200) and thereby widens at least part of the cylinder (200) to match the widening shape of the side profile (222) of the mould (220), the cylinder (200) thus reaching the shape of the nozzle ring (230).

2100174EP11156338.3Tevo Oy3MN20161102B21DJPH05226UUNKNOWN19930108X1-3,5,7,8* figure 5 *US5799394ARICE JOSE LUIS [MX]19980901A1,7* the whole document *US5531370AROHRBERG RODERICK G [US]19960702A1,7* abstract; figure 2 *Pieracci, AndreaMunich20161026JPH05226U19930108NONEUS5799394A19980901NONEUS5531370A19960702NONE