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43505results about How to "Reduce wear" patented technology

Tile feeding driving mechanisms, tile feeding assemblies and mahjong machine

The invention discloses tile feeding driving mechanisms, tile feeding assemblies and a mahjong machine. Each tile feeding driving mechanism of the mahjong machine comprises a tile feeding support, a tile storage groove, a tile feeding guide rail, a tile feeding pushing head and a steel wire rope, rolling parts are arranged at the position, close to the corresponding tile feeding guide rail and/or the corresponding tile storage groove, of each steel wire rope, each rolling part is installed on the corresponding tile feeding guide rail or the corresponding tile feeding support in a rotatable mode, the part, located in the corresponding tile storage groove, of each steel wire rope are in rolling contact with the multiple rolling parts, and a gap is maintained between the part, located in the corresponding tile storage groove, of each steel wire rope and the corresponding tile feeding guide rail and/or the side wall of the corresponding tile storage groove. According to the scheme, sliding friction of steel wire ropes in the prior art is replaced with rolling friction of the steel wire ropes, friction resistance in the operation process of the steel wire ropes is greatly decreased, and the situation that the service life and operation stability of the steel wire ropes are influenced due to sliding friction contact between the part, located in the corresponding tile storage groove, of each steel wire rope and the corresponding tile feeding guide rail and/or the arc-shaped bent side wall of the corresponding tile storage groove is avoided.
Owner:ZHEJIANG CHAOSHENG ELECTROMECHANICAL TECH CO LTD

Implantable prosthetic valve with non-laminar flow

A valve prosthesis device is disclosed suitable for implantation in body ducts. The device comprises a support stent comprised of a deployable construction adapted to be initially crimped in a narrow configuration suitable for catheterization through the body duct to a target location and adapted to be deployed by exerting substantially radial forces from within by means of a deployment device to a deployed state in the target location, and a valve assembly comprising a flexible conduit having an inlet end and an outlet, made of pliant material attached to the support beams providing collapsible slack portions of the conduit at the outlet. The support stent is provided with a plurality of longitudinally rigid support beams of fixed length. When flow is allowed to pass through the valve prosthesis device from the inlet to the outlet the valve assembly is kept in an open position, whereas a reverse flow is prevented as the collapsible slack portions of the valve assembly collapse inwardly providing blockage to the reverse flow. The device is configured so that retrograde flow will be altered from laminar flow and directed towards the leaflets to effect closing. The device can be deployed in a native heart valve position using a deployment catheter advanced through a body lumen such as a blood vessel, including an aorta.
Owner:EDWARDS LIFESCIENCES CORP
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