3785 results about "Spherical shaped" patented technology

A polyaxial screw is used to secure orthopedic appliances to bone, particularly the spine. The polyaxial screw has a shaft including a helical screw thread for securing the screw to bone. One end of the shaft has a reverse tapered head tapering toward and away from the shaft from an enlarged median. A spherical shaped swivel, having an opening smaller than the median, is snapped over the head to rotatably engage the shaft. A connector with a dome shaped cavity on one end and bifurcated tabs on the other is connected with the swivel and tightened in place with a set screw and guide ring. An appliance is held between the bifurcated tabs. The tabs are frangible to reduce the profile above the appliance.

One ozone concentrating chamber is provided therein with a part of a cooling temperature range where ozone can be selectively condensed or an oxygen gas can be selectively removed by transmission from an ozonized oxygen gas, and a part of a temperature range where condensed ozone can be vaporized, and condensed ozone is vaporized by moving condensed ozone with flow of a fluid or by gravitation to the part where condensed ozone can be vaporized, whereby the ozonized oxygen gas can be increased in concentration. Such a constitution is provided that a particle material 13 for condensation and vaporization filled in the ozone concentrating chambers 11 and 12 has a spherical shape of a special shape with multifaceted planes on side surfaces, or an oxygen transmission membrane 130 capable of selectively transmitting an oxygen gas in an ozone gas is provided.

Provided is a liquid transfer device which controls electrically liquid position. The surface of the liquid transfer device is provided with unevenness in order to solve a problem of having a large number of electrodes for controlling voltage. The number of electrodes for controlling voltage can be halved by utilization of restoring force of liquid to a spherical shape by surface tension, in addition to electrical force.

A method of producing equal-sized spherical shaped beads of a wide range of materials is described. These beads are produced by forming the parent bead material into a liquid solution and by filling equal volume cells in a sheet with the liquid solution. The sheet cells establish the volumes of each of the cell mixture volumes which are then ejected from the cells by an impinging fluid. Surface tension forces acting on the ejected equal sized solution entities form them into spherical beads. The ejected beads are then subjected to a solidification environment which solidifies the spherical beads. The beads can be solid or porous or hollow and can also have bead coatings of multiple material layers.

A nanostructure composed of a plurality of peptides, each peptide containing at least one aromatic amino acid, whereby one or more of these peptides is end-capping modified, is disclosed. The nanostructure can take a tubular, fibrillar, planar or spherical shape, and can encapsulate, entrap or be coated by other materials. Methods of preparing the nanostructure, and devices and methods utilizing same are also disclosed.

A polyaxial bone screw having a bone implantable shank, a head and a retaining ring. The retaining ring includes an outer partial hemispherical surface and an inner bore with radially extending channels and partial capture recesses. The shank includes a bone implantable body with an external helical wound thread and an upwardly extending capture structure. The capture structure includes at least one spline which extends radially outward and has a wedged surface that faces radially outward therefrom. The capture structure operably passes through a central bore of the retaining ring while the spline passes through a suitably shaped channel so that the spline becomes positioned above the head at which time the shank is rotated appropriately and the shank is drawn back downwardly so that the spline engages and seats in the capture recess. The head includes an internal cavity having a spherical shaped surface that mates with the ring surface and has a lower restrictive neck that prevents passage of the ring once the ring is seated in the cavity.

Sintered, spherical composite pellets or particles comprising alumina fines, at least one of clay and bauxite and optionally a sintering aid, are described, along with a process for their manufacture. The use of such pellets in hydraulic fracturing of subterranean formations and in grinding is also described.

The invention discloses an electrode material of composite lithium titanate and its preparation method, which is secondary particles with spherical or similar spherical shape and porous nanometer channels, which is made from lithium titanate particles, nano-carbon coated materials and doped modifier. The preparation method includes: milling the inorganic lithium salt, titanium dioxide, nano-carbon coated material or doped modifier, scattering them into the organic solvent for further drying, processing heat treatment, and cooling. Comparing with the existing technologies, this electrode material has the high-rate performance, highly reversible electrochemical capacity, and smaller surface area to enhance its first Coulomb efficiency and cycle stability, applying to rechargeable and once-use lithium-ion battery.

The specification and drawings present a new apparatus and method for using exit pupil expanders (EPE) with spherical or aspheric non-flat substrates and a plurality of diffractive elements for expanding the exit pupil of a display for viewing in order to reduce image spreading. This can also enable improved image resolution and utilization of shorter focus distances.

The present invention is related to a cosmetic package container, in particular, to a three-piece assembly of a cosmetic package container in a hollow spherical shape, comprising a cap unit and a base unit respectively of a semi-spherical hollow shape assembled in a top-down manner together with as a central ring unit having a net structure and attached to an opening of the base unit. A paste of cosmetic material is filled into the container via a filling perforation at the bottom portion of the base unit. The outer surface of the central ring unit is provided with threads for parts of the container to be fastened with ease to form a complete assembly of the container. The cap and base units are of a double-layered structure formed of different materials such that the outer appearance of the container can be of various decorative designs and is practical to use.

The present invention is an exemplary embodiment of the present invention is directed to a system, method and computer program product for creating a three-dimensionally reconfigurable cavity. The system can include a container that is configurable to create a three dimensional cavity. The system can be operative to form a footwear last in the cavity. The last can be formed from a plastic-like material. The system can include a blow molding apparatus having at least one directional deflector. The container can be capsule, hemispherical, cylindrical, or spherical-shaped. The system can include a container having holes to receive rods. The system can include an array of rods. The rods can be movable through the container. The system can further include rods that are threaded; gear-driven; coupled to a belt; coupled to a partial belt; or belt-driven. The cavity can be formed by an inner end of the rods. If more than one rod occupies a single point of the cavity, then only one rod participates in forming the cavity and other rods will not participate. Participating rods can be selected according to an optimizing module. The software module can determine an intersection of a rod with a digitized cluster of points representing a 3 dimensional surface. A method of forming a footwear last from a collapsible and expandable last is described.

The invention relates to a boiling bed hydrogenation catalyst and a preparation method. The boiling bed hydrogenation catalyst of the invention is spherical shape which diameter is 0.1mm to 0.8mm, and has appropriate amount of additives and hydrogenation of metal components, and has reasonable hole distribution. The catalyst preparation method of the invention is spherical carrier impregnation, the process of spherical carrier preparation is following: making catalyst carrier raw material which is in appropriate temperature into appropriate size grain, then spheroidizing the grain, heating the conglobation and making them into spherical catalyst carrier. The process for making the catalyst carrier raw material into the appropriate size grain is that wet stock passes screen stencil by mechanical action and generates grain. Between the processes of the making grain and nodularization, granular material primely is placed for a period of time or operates in low-speed in nodularization device for a period of time. The catalyst of the invention appropriately conducts the boiling bed hydrogenation for heavy oil, residual oil.

A new composition for forming a matrix body which includes spherical sintered tungsten carbide and an infiltration binder including one or more metals or alloys is disclosed. In some embodiments, the composition may include a Group VIIIB metal selected from one of Ni, Co, Fe, and alloys thereof. Moreover, the composition may also include cast tungsten carbide. In addition, the composition may also include carburized tungsten carbide.

The invention discloses a hedgerow pruning manipulator with six degrees of freedom (DOP). The manipulator comprises a main swing mechanism, a pruning knife assembly and a supporting mechanism, wherein the supporting mechanism is fixed on a dragging vehicle, and consists of a base, a rotary component, a lifting component and a telescopic component; the front end of the supporting mechanism is fixedly provided with the main swing mechanism capable of doing gyroscopic motion; the output shaft end of the main swing mechanism is fixedly connected with a horizontal mechanical arm the front end of which is connected with a vertical mechanical arm, and the front end of the vertical mechanical arm is provided with a wrist joint; the output end of the wrist joint is fixedly provided with the pruning knife assembly; and a control system utilizes a control module which takes ARM series processors as the core to automatically control the joint operation of the horizontal mechanical arm, the vertical mechanical arm, the wrist joint and the main swing mechanism, so that the pruning knife can be operated along various tracks in space, thus realizing pruning operation of various form such as a spherical shape, a conical shape, a cylindrical shape, a plane, an inclined face, a wavy face and the like. The pruning manipulator has the characteristics of high automaticity, wide adaptability, energy conservation, environmental protection and the like, and is convenient to popularize and use.