Patents by Inventor Isaak Y. Valdman

Isaak Y. Valdman 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).

  • Articulated coupling
    Patent number: 4449953
    Abstract: An articulated coupling has two cylindrical half-couplings facing each other at their end faces. Recesses are formed in the end faces which recesses in which a cage is installed in the recesses with a clearance. Radial coaxial openings are formed in the cage and the half-couplings and rollers are installed in the coaxial openings with clearances. The half-couplings are provided with a device for holding the rollers in the openings.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: May 22, 1984
    Assignee: Permsky Filial Vsesojuznogo Nauchno-Issledovatelskogo Instituta Burovoi Tekhniki
    Inventors: Samuil S. Nikomarov, Anatoly M. Kochnev, Vladimir B. Goldobin, Jury M. Sarapulov, Isaak Y. Valdman