Abstract:
A method for making micromagnets and magnets with a micro-polarization pattern on at least one surface thereof. The method includes the steps of molding a ceramic mold form including a cavity therein having a predetermined shape and a serpentine conduit path therethrough adjacent the cavity, the serpentine conduit path having a nominal diameter ranging down to as small as about 50 microns, sintering the mold form, supporting the mold form on a micro-porous substrate within a chamber, flooding one side of the mold form with a molten electrically conductive material, drawing a vacuum within the chamber on an opposite side of the mold form causing the molten electrically conductive material to flow into and through the serpentine conduit path toward the micro-porous substrate, cooling the molten electrically conductive material to form a serpentine electrical conductor in the mold form, forming a ferromagnetic element within the cavity, and imparting a micro-polarization pattern to the ferromagnetic element by transmitting an electrical current through the serpentine conductor.
Abstract:
Brackets for holding a porous tube in a fixed position in a surrounding production mold material, which production mold is used in non-pressurized slip casting for forming vitreous china products, and to molding systems in combination with the brackets. The bracket is angled to provide first and second leg portions of elongated dimensions. The first leg portion is comprised of a magnetic material for removably adhering to magnets embedded in a case mold section for forming the production mold. Thus, the elongated dimension of the first leg portion corresponds to that which provides an adhering relationship to the embedded magnet. The second leg portion comprises a receptacle for holding a porous tube. In one embodiment of the invention, the receptacle is an aperture whereby the porous tube is threaded. In another embodiment, the receptacle is a depression whereby the porous tube snaps into position. Thus, the elongated dimension of the second leg portion corresponds to the desired spacing of the porous tube between the molding surface and the non-molding surface of the production mold. A plurality of dimpled projections are provided in the second leg portion adapted to provide an adhering relationship between the bracket and a surrounding mold material.
Abstract:
An apparatus for forming venting channels in a continuously-formed foam product includes a plurality of channel-forming plates which are removably attachable to the upper endless-type conveyor of a rigid foam laminating apparatus. The channel-forming plates provide a molding surface to form transverse channels in the foam product during the foaming operation. The channel-forming plates are easily removed for repair and/or replacement and include a centering bar which accurately positions each plate on the endless conveyor. The channel-forming plates are configured to form generally U-shaped channels in the upper surface of the continuously formed foam product to provide venting channels when the foam product is cut and used in roof insulation. The product and venting channels therein are sized to provide a continuous channel when a plurality of the foam panels are used as well as to facilitate attachment to standard trusses or joists.
Abstract:
An automated facility for the large-scale production of superconducting magnets for use in a particle accelerator. Components of the automated facility include: a superconducting coil winding machine; a coil form and cure press apparatus; a coil collaring press; collar pack assembly apparatus; yoke half stacking apparatus; a cold mass assembly station; and a final assembly station. The facility can produce, on an economical manufacturing basis, magnets made of superconducting material for use in the ring of the particle accelerator. Each of the components is under the control of a programmable controller for operation having repeatable accuracy. All of the elements which are combined to form the superconducting magnet are thus manufactured with the dimensional precision required to produce a known, uniform magnetic field within the accelerator.
Abstract:
A protective sheet for a resin pre-impregnated fiber board (prepreg) incorporates ferromagnetic material. This permits effective and safe manipulation of the fiber board during processing (trimming) and in the manufacture of fiber components.
Abstract:
A hollow cylindrical flux source (HCFS) is formed into a toroidal shape. A hollow toroid of magnetically neutral material is mounted in the central cavity of the toroidal flux source. The hollow toroid has a central coaxial toroidal cavity of given cross-section (e.g., rectangular). The toroid flux source and the hollow toroid are each equatorially split into two halves. When the two halves are brought into juxtaposition and a suspension of magnetic material is deposited in the coaxial toroidal cavity a permanent magnet toroidal ring will be fabricated.
Abstract:
A method of making precision low cost molds by applying a plurality of layers of material to a pattern. The method includes providing a pattern of the part to be formed; orienting the pattern on a surface plate in a molding dam; applying a release coating to the surfaces; applying a thin resin layer to form the mold surface; applying a layer of fiber reinforced tooling resin to the thin resin layer; applying an epoxy-dry plaster bonding layer to the tooling resin; inserting a reinforcement framework into the dam; and applying bulk casting plaster to complete the body of the mold.
Abstract:
Method and apparatus for producing glass fibre reinforced plastic pipes and the like wherein a rotatable hollow mould form is provided, an elongated roll of reinforcing fibres is located on holding means which are placed in the concavity of the mould, spaced from the sides of the mould, the mould is rotated and the fibre roll is unrolled onto the mould face to deposit fibres thereon and settable synthetic resinous material is introduced into the mould form. The holding means may be adapted to move the roll of reinforcing fibres from a position wherein it is spaced from the mould surface to a position wherein it is in contact therewith and the holding means may be rotatable with the leading edge of the roll secured until the roll has attained a suitable speed.
Abstract:
An extrusion die having a linearly movable mandrel that controls the thickness of the extrudate as it emanates from the die head. A piston within the die head is made part of the mandrel to control the position of the mandrel's edge relative to the die's outlet opening, with sensing means in the die assembly and being operative to provide a signal indicative of the relative position of such mandrel to the die head.
Abstract:
Conoid surfaces can be generated by rotation of a material at different angles and under differing constraints. An axis of 45.degree. can produce hyperboloids; with perpendicular axes, concentric spheres can be produced; magnetic fields can be used to shape the lenses; and multielement lenses can be produced with special chambers.