Patents by Inventor Valentina P. Chemeris

Valentina P. Chemeris 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).

  • Method of forming end face wall having concentric recess in tubular workpiece
    Patent number: 4470281
    Abstract: In the method of invention a side wall of a tubular workpiece is deformed in the direction of closing the edges. From a vault thus obtained, an end face wall having a flat area in the zone of the top of the vault is preformed. The flat area is pressed inside the workpiece to form a recess by means of a pressing tool and simultaneously the end face wall is formed by means of externally rolling the workpiece, the material of the workpiece being positively transferred to the zone of bending the wall of the workpiece no matter what the distance is from the side wall to this zone. Thus, end face walls and recesses of various shapes at a wide range of dimensions may be obtained.For deforming, the workpiece is preheated to a forging temperature.
    Type: Grant
    Filed: February 23, 1982
    Date of Patent: September 11, 1984
    Assignee: Kramotorsky Industrialny Institut
    Inventors: Vladimir G. Kaporovich, Viktor G. Sereda, Valentina P. Chemeris, Vladimir V. Kaporovich, Viktor A. Makarychev, Varlen K. Pirogov, Anatoly N. Gnutov, Jury P. Sidorov, Aron N. Tsoglin, Boris S. Golberg