Only One Plane Of Symmetry Patents (Class 428/581)
  • Publication number: 20110305918
    Abstract: A sheet metal component that is bent from a sheet metal blank includes at least one three-sided corner. Two edges of the three-sided corner are formed by a first bending member of the sheet metal blank bent about a first inner bending radius Ri,1 and a second bending member of the sheet metal blank bent about a second inner bending radius Ri,2, and the third edge of the three-sided corner is formed by a first blank edge of the first bending member and a second blank edge of the second bending member. The sheet metal blank has an internal corner that forms the first blank edge, the second blank edge, and a wedge-like recess that opens in the internal corner.
    Type: Application
    Filed: July 13, 2011
    Publication date: December 15, 2011
    Inventor: Andreas Vogel
  • Patent number: 4892595
    Abstract: A mold pin insert for a high quality mold such as an optical quality injection mold for molding intraocular lenses, contact lenses and the like, is fabricated from a high quality rolled steel rod whose impurities are concentrated within a longitudinally extending central region of the rod surrounded by an annular relatively impurity free region. A slug is cut from this relatively impurity free annular region and is then heat treated to the desired hardness and machined and polished to the desired outside diameter to form the pin body. Finally, one end face of the slug is turned to form a mold face of desired shape or contour and to reorient the grains at the face in a circular direction about the longitudinal axes of the body, preferably using a cutting tool which produces a built-up edge before the tool, and the face is polished to finish the pin.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: January 9, 1990
    Inventor: Orie E. Holmes
  • Patent number: 4594295
    Abstract: A two-part cut sheet metal lamination element wherein one of the two sheet metal parts 1 comprises two outer legs 3 and a middle leg 4, the other sheet metal part 5 comprises a crosslink, the two outer legs of the first sheet metal part and the crosslink of the second sheet metal part are rigidly attached to each other, and the free end of the middle leg 4 interacts with the crosslink of the second sheet metal part by a short projection 10 which prevents movement of the free end of the middle leg with respect to the corresponding crosslink by an engagement produced when the two sheet metal parts are pressed together, said engagement and immobilization resulting from the punched or stamped configurations of the sheet metal parts.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: June 10, 1986
    Assignee: Bruno Waasner
    Inventors: Bruno Waasner, Rolf-Dietrich Waasner
  • Patent number: 4501031
    Abstract: A prosthetic joint component which is comprised of a metal retainer and a plastic bearing portion which is molded integrally onto the top surface of the metal retainer. The metal retainer includes a plurality of notches spaced apart from each other around the periphery of the retainer. The notches enable the plastic, during the molding process, to flow through the notches to create a thickness of plastic completely surrounding the upper surface and the peripheral edge of the retainer (or metal base plate) and terminating in a lower plastic rim surface which is flush with the perimeter of the lower surface of the metal base plate, forming a strong mechanical interlock between the metal and plastic portions of the prosthetic joint component.
    Type: Grant
    Filed: January 22, 1981
    Date of Patent: February 26, 1985
    Assignee: Zimmer, Inc.
    Inventors: John M. McDaniel, Clayton R. Miller