Patent ID: 6148714
Filing Date: 2000-11-21
Classification: F15B

Abstract:
A rodless cylinder comprising;a base;a guide rail disposed on said base extending in a longitudinal direction;a cylinder tube disposed on said base along said longitudinal direction;a support rib disposed along said longitudinal direction and formed in an integrated manner with said cylinder tube, said support rib being disposed on said base parallel to and alongside said guide rail;a piston arranged in said cylinder tube and slidable along said longitudinal direction of said cylinder tube;a driving magnet arranged on said piston;a substantially C-shaped yoke comprising a magnetic member arranged in close proximity in a non-contact state with respect to an outer circumference of said cylinder tube and being displaceable along said cylinder tube in accordance with an action of said driving magnet;a slider in which said C-shaped yoke is accommodated, said slider further comprising a guide element for slidably engaging with said guide rail, wherein said slider and said yoke are held in a non-contact state with respect to said cylinder tube and said support rib by said guide member and said guide rail, said slider and said yoke being slidable with respect to said cylinder tube but without contacting said cylinder tube.