Screwdriver with dual cam slot for collated screws

B - Operations – Transporting – 25 – B

Patent

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Details

B25B 23/04 (2006.01) F16B 27/00 (2006.01)

Patent

CA 2293615

A screwdriver (10) for driving collated screws (16) including a slide body (20) coupled to a housing (18) for reciprocal displacement in a cycle including a retraction stroke and an extension stoke, a lever (48) pivotably mounted to the slide body (20) carrying at one end a cam pin (67, 68) received in a cam slot (70) in the housing (18) with the other end of the lever (48) advancing successive screws (16) in the screwstrip (14), the cam slot (70) having first and second camming surfaces (71, 72) for selective engagement by the cam pin (67, 68) to vary the relative positioning of the lever (48) to be different for the same positions of the slide body (20) in the housing (18) in the retraction strokes than in the extension stroke.

Tournevis (10) destiné à visser des vis (16) retenues ensemble par une bande, qui comporte un corps de coulissement (20) couplé à un boîtier (18) en vue d'un mouvement de va-et-vient dans un cycle comportant un mouvement de rétraction et un mouvement d'extension, et un levier (48) monté pivotant sur le corps de coulissement, qui porte à une extrémité des rouleaux-cames (67, 68) reçus dans une fente (70) ménagée dans le boîtier (18), l'autre extrémité du levier (48) faisant avancer des vis successives (16) sur la bande (14) de vis. La fente (70) possède des première et seconde surfaces (71, 72) à fonction de came venant sélectivement en contact avec les rouleaux-cames (67, 68) de manière à faire varier la position relative du levier (48) afin qu'elle soit différente pour des positions identiques du corps de coulissement (20) dans le boîtier (18), dans les mouvements de rétraction et dans les mouvements d'extension.

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