Patent ID: 6378412
Filing Date: 2002-04-30
Classification: F15B

Abstract:
A lifting cylinder unit for use in a lifting platform, comprising:a stationary rod tube having a longitudinal axis, two axial end regions, and an outer surface; a rod head being arranged in one of the axial end regions of said rod tube, said rod head being fixedly connected to said rod tube and including a connecting bore; a cylinder tube having two axial end regions and an outer surface, said cylinder tube being arranged outside said rod tube, said cylinder tube being designed and arranged to be movable with respect to said rod tube in the direction of the longitudinal axis of said rod tube; a cylinder bottom being arranged in one of the axial end regions of said cylinder tube and being fixedly connected to said cylinder tube; a guide bush having an inner surface and including a surface for the application of a force, said guide bush being fixedly connected to the outer surface of said cylinder tube; a pressure chamber being arranged inside said rod tube and being designed and arranged to be supplied with a hydraulic medium via said connecting bore; a dynamic seal being arranged in the region of the inner surface of said guide bush and being designed and arranged to seal said pressure chamber; and a running surface being arranged in the region of the outer surface of said rod tube and being designed and arranged to contact said dynamic seal.