Patents by Inventor Arlie H. Ehlmann

Arlie H. Ehlmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High speed fuse
    Patent number: 4972170
    Abstract: The high speed fuse employs stamped end bell and terminals rather than forged or machined parts. A slot for the terminal is punched through the end bell. The terminal is inserted into the slot in the end bell and staked in position. This insures a strong tight fit without requiring welding or soldering. One end of each terminal has coined ridges to facilitate automatic welding of the fuse link to the terminals. Round balls are used to seal the fill holes for the arc quenching material. Metal pins secure the end bells within the fuse housing but are not electrically connected to the terminals because of the insulative end bells.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: November 20, 1990
    Assignee: Cooper Industries, Inc.
    Inventors: Arlie H. Ehlmann, Ronald E. Mollet, Fred Levko
  • Weld projections on fuse terminals
    Patent number: 4951026
    Abstract: A high speed fuse 8 having terminals 14 staked to non-electrically conductive end bells 12 with fusible element 30 connected to ridges 44 on terminal 14 by projection welding, and round balls 18 plugging sand holes 20.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: August 21, 1990
    Assignee: Cooper Industries, Inc.
    Inventor: Arlie H. Ehlmann
  • Fuse having a ball plug
    Patent number: 4935716
    Abstract: A high speed fuse 8 having terminals 14 staked to non-electrically conductive end bells 12 with fusible element 30 connected to ridges 44 on terminal 14 by projection welding, and round balls 18 plugging sand holes 20.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: June 19, 1990
    Assignee: Cooper Industries, Inc.
    Inventor: Arlie H. Ehlmann
  • Transformer winding means and methods
    Patent number: 3947795
    Abstract: A transformer winding having a very large number of turns of wire is divided into a plurality of connected portions each wound on a separate flanged bobbin with the start end and the finish end of each winding portion secured to radial tabs on the bobbin flanges. The wound bobbins are mounted end to end on an iron core and the winding portions thereon are connected in series. Alternate methods of connecting the winding portions in series are also disclosed.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: March 30, 1976
    Assignee: Emerson Electric Co.
    Inventors: Donald E. Donnelly, Jerry W. McElroy, Arlie H. Ehlmann