F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 35/00 (2006.01)
Patent
CA 2048964
This invention relates to a set screw comprising a shank having external threads and a work-engaging end portion integrally formed at one end of the shank. The work-engaging end portion has a frustohemispherical outer surface comprising a plurality of circumferentially spaced serrations in the form of teeth. Each of the teeth comprises a ramp extending outwardly from a root to a crest thereof with the ramp being inclined in a direction which is opposite to the direction of rotation of engaging the set screw in a workpiece. A cavity is formed in the outer extremity of the work-engaging end portion. The cavity cooperates with the frustohemispherical outer surface to form therebetween an annular wedge. The work-engaging end portion can be readily formed by a forging process.
Cette invention concerne une vis d'arrêt comportant une tige filetée et, au bout de cette tige, une pointe d'appui sur l'élément à bloquer. La pointe d'appui présente une surface hémisphérique tronquée comprenant une pluralité de cannelures concentriques espacées formant denture. Chaque dent comporte un flanc orienté vers l'extérieur entre sa racine et son sommet et incliné dans la direction opposée au sens de vissage de la vis d'arrêt. La pointe de la vis comporte en outre une cavité qui forme avec la forme hémisphérique tronquée un coin annulaire. La pointe décrite dans l'invention se réalise aisément par forgeage.
Beegan Desmond
Corrigan Niall
Keating Gerry
Ogilvy Renault
Sps Technologies Inc.
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