Patents Represented by Law Firm Cullen, Settle, Solman & Cantor
  • Apparatus for deforming a tubular slug of thermoplastic material
    Patent number: 3969060
    Abstract: A tubular slug of thermoplastic material is preheated and is then gripped a position spaced from an open end of the slug, the gripping means being such as to effect a reduction in cross-section of the gripped portion of the slug. Such reduction in cross-section provides a shoulder which abuts the gripping means during application of pressure to the end face of the slug to deform the end portion thereof to provide a thread, groove or other profiled formation.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: July 13, 1976
    Assignee: Heidenreich & Harbeck Zweingniederlassung der Gildemeister AG
    Inventors: Otto Rosenkranz, Karl-Heinrich Seifert, Claus Horwege