178results about How to "Reduce surface friction" patented technology

A variety of hollow structures with unique morphologies were manufactured with a rotational spinning technique. Phase separation of soluble solutions or emulsions was induced within a filled mold as it was being rotated about one of its axis. The density difference between phases results in sediment at the inner lumen of the mold under centrifugal forces. After or during sedimentation, gelation of the phase-separated particles fixes the hollow structure morphology and the solvent remains in the center of the mold. The solvent is removed from the mold resulting in a coating or tube. By controlling the rotational speed and the formulation chemistry, the tube dimensions and wall morphology can be manipulated. This technique offers a new approach to the manufacture of polymeric tubes. It requires small quantities of starting material, permits multi-layering of tubes, is applicable to diverse polymers and can result in highly diffusive hollow structures while maintaining good mechanical strength.

Selected surfaces of a cellular polymeric foam surface finishing pad are heated to cause the surface cells to partially collapse or to fully collapse and glaze over. The selected surfaces may be the planar pad faces or may be formed in one or more depressions formed in the planar faces. The areas of partially collapsed cell structures in the operating face of the pad provide a slow down in the rate of polish or compound absorption, increasing the effectiveness of the finishing process. The fully collapsed cell glazed surface on the rear attachment face of the pad prevents the migration of moisture through the pad to the pad attachment mechanism.

A rotatable spray head, a multiple materials spraying apparatus using thereof and a method of spraying multiple materials are provided. The multiple materials spraying apparatus includes the rotatable spray. An outer shell and an inner tube of the rotatable spray can be correspondingly rotated in order to change the material from one to another. Therefore, multiple materials can be sprayed through one nozzle of the rotatable spray. A recycling step of the method allows the sprayed material to be recycled back to a material supplying pipe or a material holder before switching to the next spraying material, thereby preventing the mixing of different spraying materials during the usage process.

Hyaluronic acid-retaining biopolymer is provided which exhibits low levels of protein adsorption and surface friction. The biopolymer is useful for incorporation in products, such as contact lenses, used in biological environments.

An iron-type golf club head having a coated stepped sole is disclosed herein. The coated stepped sole is stepped such that the sole surface furthest from the face is raised away from the turf to minimize the turf contact through a golfer's swing particularly for the longer, less lofted irons. The surface friction is reduced by applying a thin dense chromium coating thorough electroplating to the stepped sole.

The invention discloses a self-cooling type air suspension air compressor with an air storage function. The self-cooling type air suspension air compressor with the air storage function comprises a combined air compressor impeller, an air compressor volute, a cooling turbine, a heat pipe heat exchanger, an air storage cavity, an air bearing assembly, an air compressor shell and a direct current brushless motor. A rotor is coaxially connected with the combined air compressor impeller and the cooling turbine through a rotor core shaft. A thrust bearing assembly and a radial bearing assembly aresequentially arranged on the left side of the direct current brushless motor. The thrust bearing and the radial bearing are foil piece type hydrodynamic gas-lubricated bearings. According to the self-cooling type air suspension air compressor with the air storage function, high-pressure gas stored in the gas storage cavity is controlled to enter an air bearing assembly through the normally open electromagnetic valve during start-stop so as to prolong the time of a dynamic pressure gas film in the start-stop phase, thereby reducing the surface friction between the gas bearing and a rotating shaft to achieve the purpose of prolonging the service life of the gas bearing, and the self-cooling type air suspension air compressor with the air storage function has the advantages of large bearing capacity of the rotating shaft, less friction heat generation, more stable performance and the like by adopting a novel rotating shaft cooling mode.

Compositions and processes are disclosed for forming hydrophobic coatings and lubricant-infused surface coatings. Coatings may be applied to various substrates without prior chemical or temperature treatment of the substrates and over large and irregular surfaces. Coatings are self-healing, antifouling, and have enhanced lifetimes.