B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 17/00 (2006.01) B25B 13/50 (2006.01) B25B 21/00 (2006.01) E21B 19/16 (2006.01) F16H 57/02 (2006.01)
Patent
CA 2404415
An improved power tong gear train (19) which includes a ring gear (6) having a series of teeth and a roller surface (12). The gear train further includes an idler gear assembly (40) having a series of teeth and a roller element (44) fixed thereto. The idler gear assembly (40) is positioned such that the roller element (44) engages the roller surface (12) and maintains the tangential orientation of the two gears' respective pitch diameters.
L'invention se rapporte à un train d'engrenages pour clés de vissage à commande pneumatique amélioré, comprenant une couronne (6) dotée d'une série de dents et d'une surface de roulement (12). Ce train d'engrenages comporte également un ensemble d'engrenages intermédiaires (40) ayant une série de dents et un élément de roulement (44) fixé audit ensemble. L'ensemble (40) des engrenages intermédiaires est positionné de sorte que l'élément de roulement (44) entre en contact avec la surface de roulement (12) et maintienne l'orientation tangentielle des deux diamètres primitifs respectifs des engrenages.
Borden Ladner Gervais Llp
Gravouia Mark F.
LandOfFree
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