B - Operations – Transporting – 43 – K
Patent
B - Operations, Transporting
43
K
B43K 24/08 (2006.01)
Patent
CA 2552699
An advancing/retracting mechanism having a pair of cams is disclosed. The advancing/retracting mechanism includes a first cam (22), a second cam (24), and a barrel (26). The first cam includes an angled surface (30) and a shoe (36), and the second cam includes an angled surface (52) and a slider (58). The shoe engages with a helical surface (42) in the barrel, and the slider engages with a straight surface (60) in the barrel. The first cam travels a first distance along the longitudinal axis of the barrel from a first to a second state, and the second cam travels a second distance that is greater then the first distance along the longitudinal axis of the barrel from the first to the second state.
L'invention concerne un système d'avance/repli muni d'une paire de cames. Ce système comprend une première came, une seconde came, ainsi qu'un barillet. La première came possède une surface biseauté et un patin, et la seconde came possède une surface biseauté et un coulisseau. A l'intérieur du barillet, le patin s'engage dans une surface hélicoïdale alors que le coulisseau s'engage dans une surface droite. La première came traverse une première distance le long de l'axe longitudinal du barillet, en passant d'un premier état à un second état. La seconde came traverse une seconde distance, qui est supérieure à la première, le long de l'axe longitudinal du barillet, en passant du premier au second état.
Andrews Neville E.
Bielecki Andrew
Gowling Lafleur Henderson Llp
Sanford L.p.
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