Patents by Inventor Anthony F. Cieszkiewicz

Anthony F. Cieszkiewicz 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).

  • Land mine clearing tool
    Patent number: 5844160
    Abstract: A forwardly-rotatable, driven-drum, land mine clearing tool has a plurality of robust, easily-repairable tool spokes extending radially from the outer surface of the drum. The land mine clearing tool is connected to the front end of a tracked vehicle and is operatively raised and lowered from the tracked vehicle. The drum and tool spokes engage the earth of a land mine field in a milling action, which grinds and destroys some land mines while triggering detonation of other land mines.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: December 1, 1998
    Assignee: Caterpillar Inc.
    Inventor: Anthony F. Cieszkiewicz
  • Method of manufacturing a crankshaft
    Patent number: 5303468
    Abstract: A crankshaft is manufactured by providing a plurality of initially completely discrete crankshaft segments electron-beam welded together. Tubular bearing journals (12,14) having an inclined surface (30) are positioned in a groove (35,40) of a counterweight web (16) and a groove (50) of a crankshaft end (18). The discrete segments (12,14,16,18) are positioned and maintained in position by the interaction of inclined surfaces (30) and grooves (35,40,50) for electron-beam welding.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: April 19, 1994
    Assignee: Caterpillar Inc.
    Inventors: Anthony F. Cieszkiewicz, Thomas E. Clements
  • Construction for a rollover protection structure
    Patent number: 5280955
    Abstract: The present invention provides a rollover protection structure that utilizes unitary corner members that are cast pieces that require no additional bracing. In addition, each corner member includes a leg portion that integrally defines an area of reduced cross-section. This reduction in cross-section creates an area of predictable deformation in the structure which will prevent the structure from collapsing on an operator stationed within the cab.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: January 25, 1994
    Assignee: Caterpillar Inc.
    Inventors: Peter M. Nelson, Leo Chuzhoy, Anthony F. Cieszkiewicz, Steven D. Jones, David E. Nelson