Screwed attachment of a body of revolution to an annular flange in a turbine engine
AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorEric Touze
Life of this patent
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Abstract
An annular fairing forming a bolt guard associated with the heads of screws of an attachment carries, inside thereof and in line with each screw, first cylindrical sockets each comprising two slightly inwardly bent tongues which cooperate with apertures provided in a respective second socket disposed within the first socket and comprising an inturned downstream edge which is impressed over and thereby engaged with peripheral teeth on the head of the respective screw.
Claims6
Attachment means for fixing a body of revolution to an annular flange in a tubular engine, comprising a plurality of evenly distributed screws, each of said screws having a head provided with teeth disposed around a peripheral portion thereof, an annular fairing forming a bolt guard over the heads of said screws, said bolt guard having means defining access holes to said screws in the face of said bolt guard opposite said screws, a plurality of first tubular sockets within said bolt guard and respectively aligned with said screws, said first sockets being wider than the heads of said screws and being rigidly fixed ot said bolt guard in the region of said access holes, and a plurality of second tubular sockets respectively disposed within said first sockets and each having an inturned downstream edge impressed on and engaged with said teeth on the head of the respective screw, each of said second sockets having at least one aperture in the wall thereof, and each of said first sockets having a slightly inwardly bent tongue cooperating with said aperture in said second socket to retain said second socket in said first socket.
Dependencies are inferred from the claim text.