Patents by Inventor Mark Izrailevich Grinshpun

Mark Izrailevich Grinshpun 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).

  • Pipe cold-rolling mill
    Patent number: 3995468
    Abstract: The invention relates to rolling production. A pipe cold-rolling mill comprises a stand which has a housing with longitudinal guides rigidly fixed therein. In said guides a carriage is installed on a pair of backup rolls mounted in the housing. Said carriage is connected via a crank gear with a drive of the mill to effect the reciprocating movement of the carriage in said guides in the process of rolling a pipe. Said carriage also carries a pair of working rolls positioned at both sides of the axis of the pipe to be rolled. Said working rolls interact each with one of the two backup rolls and are, together with the latter, spring-actuated one with respect to the other.
    Type: Grant
    Filed: January 7, 1976
    Date of Patent: December 7, 1976
    Inventors: Mark Izrailevich Grinshpun, Vladislav Arkhipovich Mironenko, Nikolai Stepanovich Makarkin