Patents Assigned to SIGMANKoncern
  • Apparatus for the radial shaping of tubular articles
    Patent number: 4434645
    Abstract: Apparatus for radial shaping of rotors, stators, crankshafts, spindles and the like from an elongate seamless tube where a supporting ring performing a reciprocating motion according to an adjustable stroke of a connecting rod causes by way of rollers and guiding segments a reduction and increase of the radial distance of sliding shoes with forming jaws with respect to the formed object.
    Type: Grant
    Filed: July 29, 1981
    Date of Patent: March 6, 1984
    Assignee: SIGMANKoncern
    Inventors: Josef Svercl, Jan Novak, Zdenek Kalab