E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/16 (2006.01)
Patent
CA 2464356
A method of reducing the torque required to provide relative rotation of two connected members includes the step of providing impacts at or adjacent the connection between the two members at a rate of at least two impacts per second. The invention also provides an apparatus (1) for reducing the torque required to provide relative rotation of two connected members comprising an impact member (10) adapted to provide an impact to at least one of the connected members (100), driving means (12, 14) for driving the impact member, wherein said driving means is operable to cause the impact member to automatically and repeatedly impact upon said at least one member.
L'invention porte sur un procédé de réduction d'un couple requis de façon à entraîner en rotation relative deux éléments raccordés. Ce procédé consiste à générer des impacts au niveau ou à côté du raccordement des deux éléments à une cadence d'au moins deux impacts par seconde. L'invention porte également sur un appareil (1) de réduction de couple requis afin d'entraîner en rotation relative deux éléments raccordés, cet appareil comprenant un élément d'impact (10) conçu pour générer un impact sur au moins un (100) des éléments raccordés, un dispositif de commande (12, 14) destiné à commander l'élément d'impact et pouvant être actionné de sorte que l'élément d'impact génère un impact de manière automatique et itérative sur au moins ledit élément.
Sandvik Mining And Construction Australia (production/supply) Pt
Sim & Mcburney
Udr Kl Pty Ltd
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