Load indicating fastener and method of manufacture

Details Load indicating fastener and method of manufacture Load indicating fastener and method of manufacture

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 31/02 (2006.01) F16B 39/24 (2006.01) F16B 43/00 (2006.01)

Patent

CA 2657808

A load indicating fastener comprising a load indicator and a fastener body. The load indicator comprises an annular body defining a through hole having a minimum diameter and a plurality of protuberances integral with a first face of the annular body and a corresponding plurality of indentations in a second face of the annular body opposite from the first face. The fastener body comprises a series of threads, a head defining a contact surface, and a shank depending from the contact surface. The shank includes a first portion having a first outside diameter less than the through hole minimum diameter such that the load indicator is received on the shank first portion and a second portion including at least one radially extending member having a second outside diameter greater than the through hole minimum diameter such that the load indicator is retained on the fastener body thereby.

L'invention concerne un organe de fixation indiquant la charge, comprenant un indicateur de charge et un corps d'organe de fixation. L'indicateur de charge comprend un corps annulaire définissant un trou traversant ayant un diamètre minimal et une pluralité de protubérances d'un seul tenant sur une première face du corps annulaire et une pluralité d'empreintes correspondantes sur une seconde face du corps annulaire opposée à la première face. Le corps d'organe de fixation comprend une série de filets, une tête définissant une surface de contact, et une tige pendant à partir de la surface de contact. La tige comprend une première partie ayant un premier diamètre externe inférieur au diamètre minimal du trou traversant, de telle sorte que l'indicateur de charge est reçu sur la première partie de la tige et une seconde partie comprenant au moins un élément s'étendant radialement ayant un second diamètre externe supérieur au diamètre minimal du trou traversant, de telle sorte que l'indicateur de charge est retenu sur le corps d'organe de fixation par celui-ci.

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