61results about How to "Reduced Scratch Damage" patented technology

The invention provides a dihedral corner reflector array optical element and a method for fabricating the same and a display device using the same. For a method fabricating a dihedral corner reflector array optical element, a molding die having a reversal shape of the prism bodies is used. Each prism body has a frustum shape having an end plane whose area is smaller than that of the base plane side of the substrate. Each prism body is composed of a rectangular parallelepiped portion including the orthogonal plane sides to be a dihedral corner reflector and a taper portion integrated therewith having sides being non-parallel to the orthogonal plane sides. The method includes clamping the molding die to define a cavity therein; forming the optical element made from molten resin in the cavity; and parting the optical element from the molding die. The molding dies are relatively moved in a parting direction that the molding die leaves the orthogonal plane sides before anything else to part the optical element.

The invention discloses a single-seat vacuum self-standing type adjusting valve. The single-seat vacuum self-standing type adjusting valve comprises an adjusting valve main body, a connection mechanism in the middle of the adjusting valve main body and a fixing mechanism at the bottom end of the adjusting valve main body, wherein the connection mechanism comprises a first fixed ring and a second fixed ring; a valve element is arranged at the bottom end of the adjusting valve main body; the first fixed ring is arranged at the top end of the valve element; an adjusting block is arranged in the middle of the adjusting valve main body; the second fixed ring is arranged at the bottom end of the adjusting block; fixed columns are arranged at two sides of the top end of the first fixed ring; thefirst fixed ring is internally provided with an inner thread; the fixed columns and a rotary groove are arranged, so that the cumbersomeness and complexity in a connection and fixing process of the adjusting valve are effectively reduced; the fixed columns only need to be aligned to the rotary groove to be connected and fixed, so that the time is saved and the utilization of special tools is reduced; in a mounting process, scratches and damages to the adjusting valve in a mounting process are reduced, the service life of the adjusting valve is prolonged and the loss of devices is reduced.

The invention discloses a chemical mechanical polishing pad and a chemical mechanical polishing method, belonging to the field of chemical mechanical polishing. The polishing pad at least comprises a nano-fiber layer which is in a non-woven fabric structure, the thickness of the fiber layer is 0.1mum-3cm, the average diameter of a nano-fiber is 1nm-1mum, the length of the nano-fiber is more than 1cm, and the axial direction of the nano-fiber is in parallel to a working surface of the polishing pad. The chemical mechanical polishing method comprises the following steps: a polishing solution is applied on the working surface of the polishing pad or on the surface of a polished material; and the working surface of the polishing pad is in contact with the surface of the polished material, and the polishing pad can move relative to the polished material, so that the chemical mechanical polishing is carried out on the polished material under lower pressure or super-low pressure. With the adoption of the polishing pad, the defects such as scratch damage and stress peeling can be reduced so as to obtain the surface with higher quality; meanwhile, higher material removal speed can be obtained under lower pressure.

The invention discloses a lifting and turning device for automobile maintenance, and mainly relates to the field of automobile maintenance. Including the maintenance pile foundation, there are multiple maintenance pits on the maintenance pile foundation, the top of the maintenance pit is rotatably connected with a turning plate, the inside of the maintenance pit is rotatably connected with a power telescopic rod, and the movable end of the power telescopic rod is rotatably connected with the bottom of the turning plate , There are tire grooves symmetrically on the flip plate, and sliding holes are symmetrically arranged on both sides of the tire grooves. The vertical sliding connection in the sliding holes is connected with a lifting plate. The top of the lifting plate is equipped with a clamping telescopic rod, which The clamping plate is fixed at the movable end of the tire groove, and the clamping plate is located in the vertical range of the tire groove. The inner lifting plate is symmetrically rotated and connected with hook rods. There are multiple limit blocks slidingly connected on the maintenance pile foundation. There is a limit hole on one side. The beneficial effect of the present invention is that it can improve the fixing effect on the car when turning over, make turning over and resetting more convenient, reduce the damage to the car, and ensure the maintenance efficiency.