443 results about "Surface change" patented technology

The invention discloses a wave wheel of a washing machine, comprising a base and a plurality of blades arranged on the base, wherein the blades are provided with veins and water propelling surfaces with slopes at two sides. The wave wheel is characterized in that a cone-shaped platform is arranged at the middle part of the base; raised propelling ribs of which the quantity is same as the quantity of the blades are arranged on the vertical face of the cone-shaped platform and smoothly connected to the corresponding veins; water propelling surfaces of each blade have different slopes; concave surfaces and convex surfaces are arranged on the water propelling surfaces; the veins are S-shaped for corresponding to the curve surface changes of the concave surfaces and convex surfaces of the water propelling surfaces; moreover, side-looking lines of the veins are continuous curves firstly concave and then convex outwards from the center of the base. According to the invention, the blades show a streamline shape like a propeller and the water propelling surfaces are smooth and temperate, but the motive power is strong and the washing ability is outstanding; meanwhile, water flow raised in the middle can be generated to ensure that clothes rotated to the central position of a wash bucket are scattered and effectively prevented from being intertwisted; in addition, the destroy of backward rotation to water flow trend is decreased to ensure that the anti-intertwist ability is further increased.

A refrigerator appliance including a cabinet defining a chilled chamber and a first slide assembly is provided. The first slide assembly is mounted to the cabinet at least partially within the chilled chamber. The refrigerator appliance also includes a door with a frame having a first frame member rotatably attached to the first slide assembly at a first pivot joint. The door is rotatable about the lateral direction at the first pivot joint between an inwardly tilted position and an outwardly tilted position. In the inwardly tilted position the door defines an acute angle with the first slide assembly, and in the outwardly tilted position the door defines an obtuse angle with the first slide assembly. Such a configuration may allow the door to form a more complete seal with the cabinet of the refrigerator appliance despite any, e.g., surface variations of the cabinet.

This invention provides an optical image lens system comprising: a positive first lens element having a convex object-side surface; a second lens element; a positive third lens element; a fourth lens element; a positive plastic fifth lens element having a convex object-side surface and a concave image-side surface, at least one of the object-side and image-side surfaces is aspheric; and a negative plastic sixth lens element having a concave image-side surface, at least one of the object-side and image-side surfaces is aspheric, wherein the shape of the image-side surface changes from concave at the paraxial region thereof to convex while away from the paraxial region thereof.

The invention relates to a weld seam surface defect feature extraction method based on the grayscale image morphology, which comprises the steps of setting shooting parameters of a miniature CCD camera according to an acquired image; converting the acquired true color image into a grayscale image, and carrying out median filtering processing on the image; eliminating a white interference region generated by residue noise and background texture by adopting a minimum area deleting method; avoiding influences imposed on edge line extraction by an undetermined black region through region filling processing; processing a completely filled weld seam region through an expansion algorithm so as to acquire a weld seam region whose area is identical to the actual weld seam area; extracting an edge line of the filled and expanded weld seam region by adopting a Canny operator so as to realize positioning for the weld seam region; and drawing a cross section grayscale B scanning curve which is vertical with the weld seam edge, wherein a gray-scale value of the weld seam surface changes obviously on the B scanning curve when the weld seam surface has defects such as a hole and an overlap, so that different types of defects at the weld seam surface are judged. The weld seam surface detect feature extraction method realizes accurate positioning for the weld seam edge and accurate recognition for the defects such as overlaps and holes.

A thin lens consists of a first optical element which comprises a first refracting surface, wherein incoming light passes through the first refracting surface on a first optical axis. A reflecting surface changes a direction of the incoming light from the first optical axis to a second optical axis. Incoming light on the second optical axis passes through a second refracting surface. A second optical element comprises a first refracting surface, wherein incoming light passes through the first refracting surface on the second optical axis. A reflecting surface changes a direction of the incoming light from the second optical axis to a third optical axis. Incoming light on the third optical axis passes through a second refracting surface. The third optical axis is approximately parallel to, and in opposite direction from, the first optical axis.

A dispenser for dispensing paper or non-woven sheet product for wiping, wherein the level of sheet product contained in the dispenser decreases as the sheet product is dispensed, the dispenser comprising an ultrasonic level sensor for determining the level of the sheet product contained in the dispenser, wherein the ultrasonic sensor is arranged to direct the ultrasonic beam toward a surface associated with the sheet product, wherein a distance that the beam travels to the surface changes progressively as the level of the sheet product in the dispenser changes from a full condition to an empty condition.

A mechanical interface connecting a biological body segment, such as a limb, portion of a limb or other body segment, to a wearable device such as a prosthetic, orthotic or exoskeletal device, is fabricated by quantitatively mapping a characterized representation of the body segment to form a digital representation of the mechanical interface shape and mechanical interface impedance. The mechanical interface includes a continuous socket defining a contoured inside surface and a contoured outside surface, and includes a material having an intrinsic impedance that varies through the material, so that the intrinsic impedance varies along the contoured inside surface.

The invention discloses a simple fixing and clamping device of a large-sized wallboard. The height of suction cup devices is adjusted by the self weight of the wallboard, and all vacuum suction cups are in contact with the wallboard sufficiently. The height of adjusting springs of the fixing and clamping device can be adjusted automatically to adapt to a molded surface shape of a workpiece, and when the wallboard is sight, an external load can be conducted; the fixing and clamping device can increase and decrease the number of the suction cup devices for fixing and clamping a wallboard curved face with different sizes and different shapes, and the fixing and clamping device has good universality and good flexibility. An air compressor is connected with a vacuum generator, and the vacuum generator is connected with the suction cup devices through vacuum rubber pipes; by controlling the air exhaust of the air compressor, negative pressure is generated in the vacuum suction cups, the clamp force is formed, and the wallboard is sucked to the fixing and clamping device. When the processing of the wallboard is completed, the air compressor is controlled to make the negative pressure in the vacuum suction cups change into zero pressure or positive pressure, and the vacuum suction cups are departed from the wallboard automatically. The fixing and clamping device is simple in structure, good in compatibility and can adapt to part processing and forming of the wallboard of different curvature of surface changes.

An object with a dynamically changeable configuration is provided. The outer surface configuration and / or the weight displacement configuration can be dynamically changed to alter the characteristics of the object, which can be a toy, such as a football, baseball or flying disc. To change the outer configuration of the object, a cover having an outer surface and at least one aperture therethrough is provided. A surface changing member, such as a bladder, is urgable into the at least one aperture to dynamically change the outer surface of the object. To change the weight displacement of the object, the main body includes a first chamber and a second chamber therein where fluid, such as gas or liquid, can flow therebetween. The positioning of the fluid within the first chamber and the second chamber is controlled by a pump and valve system. As a result, the weight displacement of the object is dynamically changeable.

The energy distribution of the beam spot on the irradiated surface changes due to the change in the oscillation condition of the laser or before and after the maintenance. The present invention provides an optical system for forming a rectangular beam spot on an irradiated surface including a beam homogenizer for homogenizing the energy distribution of the rectangular beam spot on the irradiated surface in a direction of its long or short side. The beam homogenizer includes an optical element having a pair of reflection planes provided oppositely for reflecting the laser beam in the direction where the energy distribution is homogenized and having a curved shape in its entrance surface. The entrance surface of the optical element means a surface of the optical element where the laser beam is incident first.

The invention discloses a bottleneck defect detection method adopting residual analysis and dynamic threshold segmentation. The method comprises the following steps: positioning a bottleneck area by using a randomized circle assessment technology; carrying out strong smoothing treatment on a bottleneck target image obtained through polar coordinate transformation expansion, differentiating bottleneck target images before and after smoothing treatment to form a threshold curved surface changing with the gray value of the original bottleneck target image, and carrying out dynamic threshold segmentation on the bottleneck target image of the curved surface; and carrying out area connectivity detection on a binary image obtained after the segmentation, and judging whether defects exist or not according to the height, the width and the area of the connection area. The method has very strong adaption ability to the change and interference of the gray value of an identification target in the image, has a fast execution speed, and effectively solves the problem of high-speed and high-precision detection of the bottleneck defects.

An optical wavefront correction plate incorporates a unique, three-dimensional spatial retardation distribution utilizing the index of refraction change of resin mixture in its cured state. The optical wave plate comprises a pair of transparent plates, containing a layer of a monomers and polymerization initiators, such as resin mixture. This resin mixture exhibits a variable index of refraction as a function of the extent of its curing. Curing of the resin mixture may be made by exposure to light, such as ultraviolet light, and may be varied across and through the surface of the resin mixture to create a particular and unique three-dimensional wavefront retardation profile. The optical wave plate provides improved performance in large area mirrors, lenses, telescopes, microscopes, and ophthalmic diagnostic systems.

A method and system for inspecting an object having a planar face with surface variations such as catalytic converters. Light sources are placed above the planar face of the object for lighting the face of the object. At least one obscuration is positioned proximate the planar face of the object to limit the lighting of the planar face of the object to thereby provide a low depth field of lighting. The planar face of the object is imaged to provide an image representation of the planar face of the object. The image representation of the planar face of the object is evaluated to characterize edge chip damage.

A device mounting board includes: an insulating resin layer; a wiring layer disposed on one main surface of the insulating resin layer; and a bump electrode connected electrically to the wiring layer and protruding on a side of the insulating resin layer from the wiring layer. A side surface of the bump electrode is curved inwardly toward the center axis of the bump electrode as viewed in a cross section including the center axis of the bump electrode, and the radius of curvature of the side surface changes continuously from a wiring layer end to a head end of the bump electrode.

The invention discloses a clamp structure for clamping and autocompensation; a clamping block (3) is arranged on a clamp; the surface of the clamping block (3) for clamping a workpiece is a clamping surface (4); and the clamping block (3) is made of an elastic material. With the technical proposal adopted, abrasion occurring in a clamping part and the change of the surface of the clamped workpiece are subjected to compensation by a simple elastic structure so as to ensure that a gripping jaw has enough clamping force in clamping and to guarantee the dimension of the workpiece after various machining processes (such as welding).

An example input processing system includes a controller device and an information processing device. The controller device transmits data representing an input position on a predetermined input surface and a detection result of an inertia sensor unit to the information processing device. The information processing device calculates an attitude of the controller device based on the detection result of the inertia sensor unit, and sets a predetermined surface in a virtual space so that an attitude of the predetermined surface changes in accordance with the attitude of the controller device. A first image representing an area in the virtual space including a position of the surface is displayed on a predetermined display device. The information processing device calculates, as a position in the virtual space, a position on the surface determined by the input position.

A tire tread comprising a rolling surface and at least one wear indicator formed by at least one cavity which opens onto the rolling surface, wherein the geometrical shape of the trace of the cavity on the rolling surface changes as a function of the wear level of the tread and wherein the geometrical shape of said trace is an analogical expression of the tread's wear level.

Problems: To provide a polyvinylidene fluoride microporous membrane which has high water permeability and separation performance and is excellent in mechanical and chemical strength; and a process for producing the film.Means for Solving Problems: An anisotropic polyvinylidene fluoride hollow fiber microporous membrane characterized in that the porosity of the cross-sectional bulk layer is higher than the membrane surface porosity of the outer layer and that in the cross section of the membrane, the dense microstructure of the outer surface changes substantially discontinuously into the coarse structure of the bulk layer. The microporous membrane can be produced by introducing by a dry-wet method a dope prepared by dissolving a polyvinylidene fluoride resin together with a water-soluble latent solvent at high temperature into a cooling bath consisting of water or a mixture thereof with a water-soluble latent solvent and subjecting the dope to membrane formation wherein the cross-sectional bulk layer is formed mainly by thermally-induced phase separation and the outer layer is formed mainly by nonsolvent-induced phase separation.

A drag box for use in applying cold mix asphalt paving material to a surface includes a pugmill for distributing the cold mix over the surface, a strike blade for shearing the asphalt mixture to a desired thickness, cylinders for raising and lowering the strike blade in response to elevational changes in the surface, at least one signal generator associated with each cylinder and adapted to produce a signal indicative of the elevation of the surface, and at least one signal receiver associated with each signal generator. The drag box is pulled behind a prime mover but preferably is not rigidly coupled with the prime mover. The blade is raised and lowered in response to signals emanating from the generator as the elevation of the surface changes, allowing surface level variations to be evened out while paving.

An image capturing apparatus capable of performing a suitable illuminance nonuniformity correction by setting a suitable γ-characteristic every block even in the case that the size of a character image projected on a sensing surface changes according to an image capturing magnification, and capable of extracting a boundary area between a white board portion and a background portion and applying a suitable image processing to this boundary area during the illuminance nonuniformity correction for a picked image, and capable of image capturing a representation such as characters drawn on a white board in such a manner that an obtained image is clear and easy to see by suitably performing an illuminance nonuniformity correction even in the case of color image capturing, and capable of detecting a regularly reflected light with high accuracy and can thereby securely prevent an error of obtaining an image of low quality by image capturing, and capable of preventing an error in flash-image capturing a representation such as characters drawn on a white board under insufficient illumination light and effectively perform an illuminance nonuniformity correction.

A manual snow plow with ergonomic features comprises a snow scoop, two (2) articulating struts extending upward from the scoop and two (2) hinged rounded braces placed against a user's shoulders during use. The struts are provided with cross bracing which provide size adjustability and stability to the plow. A set of position adjustable hand grips extend from each strut in a rearward fashion to control the device during use. A pair of casters provided on a rear of the snow scoop allows the device to ride over cracks and other uneven surface variations. The snow plow becomes an extension of the user's body and thus enables the user to use the force of their entire body to move snow.