Compression tool jaw arm member

B - Operations – Transporting – 25 – B

Patent

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Details

B25B 27/14 (2006.01) B25B 27/10 (2006.01)

Patent

CA 2445245

A pivotal jawarm for a compression tool has opposite sides, a pivot pin opening therethrough, longitudinally opposite ends on longitudinally opposite sides of the opening, and inner and outer edges between the ends and on laterally opposite sides of the opening. A stress concentrator comprising aligned recesses in the opposite sides of the jawarm extends from the inner edge toward the pivot pin opening and provides a failure point at the inner edge for consistently initiating a fatigue crack at the failure point and fracture of the jawarm from the failure point to the pivot pin opening.

Un bras de machoire pivotant pour un outil à compression présente des côtés opposés, une ouverture de tige de pivot, des extrémités longitudinalement opposées sur des côtés longitudinalement opposés de l'ouverture, et des bords interne et externe entre les extrémités et sur les côtés latéralement opposés de l'ouverture. Un concentrateur de contrainte comprenant des évidements alignés dans les côtés opposés du bras de mâchoire s'étend à partir du bord interne vers l'ouverture de l'axe de pivotement et fournit un point de défaillance sur le bord interne pour lancer de manière cohérente une fissure de fatigue au niveau du point de défaillance et une fracture du bras de mâchoire du point de défaillance à l'ouverture de l'axe de pivotement.

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