Pin fastener for achieving metal-to-metal connections

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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F16B 15/06 (2006.01)

Patent

CA 2572604

A new and improved fastener, uniquely adapted for securing together vertically oriented stud members and horizontally oriented track members of wall framework structures, comprises a forwardly extending pointed tip portion having a tangent ogive configuration so as to facilitate fast and accurate penetration into and through thin gauge sheet metal members without causing any excessive enlargement of the apertures formed within the thin gauge sheet metal member, and a shank portion which comprises a lower, spiral-threaded shank portion which facilitates the ease of penetration of the fastener into and through the thin gauge sheet metal members, and which causes a mating thread to effectively be extruded within the thin gauge sheet metal members. The upper shank portion may alternatively comprise a plurality of axially contiguous, annular flute members, or a plurality of nibs interposed between the spiral threads, which have oppositely disposed or oriented faces for facilitating the penetration of the fastener into and through the apertured thin gauge sheet metal members, and for engaging the annular rim regions of the thin gauge sheet metal members, which surround the apertures formed within the thin gauge sheet metal members, so as to significantly enhance the clamping forces and pull-out resistance values of the fastener with respect to the thin gauge sheet metal members.

Cette nouvelle attache de fixation améliorée, adaptée de manière originale pour attacher ensemble des organes de goujons orientés verticalement et des organes de coulisses orientés horizontalement, de structures de cadre de paroi, comprend une portion de pointe s'étendant vers l'avant ayant une configuration en ogive tangente, permettant une pénétration rapide et précise dans et à travers des organes en tôle métallique de calibre mince sans provoquer d'élargissement excessif des ouvertures formées dans l'organe en tôle métallique de calibre mince ; elle comprend également une portion de tige qui comporte une portion de tige inférieure à filetage spiralé qui facilite la pénétration de l'attache dans et à travers les organes en tôle métallique de calibre mince, et qui cause l'extrusion effective d'un filet conjugué dans les organes en tôle métallique de calibre mince. La portion de tige supérieure peut, en variante, comprendre une pluralité d'organes cannelés annulaires, axialement contigus, ou une pluralité d'ergots interposés entre les filets spiralés, qui ont des faces orientées ou disposées en regard pour faciliter la pénétration de l'attache dans et à travers les organes en tôle métallique de calibre mince et pour engager les régions de bords annulaires des organes en tôle métallique de calibre mince qui entourent les ouvertures formées dans les organes en tôle métallique de calibre mince ; ceci augmente considérablement les forces de serrage et les valeurs de résistance à l'arrachement de l'attache par rapport aux organes en tôle métallique de calibre mince.

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