Patents Assigned to Gottfried Hagen AG
  • Tubelet pocket
    Patent number: 4140839
    Abstract: A tubelet pocket construction for holding the positive electrodes of accumulators and a method for making same comprises two pieces of a textile sheet material which are connected together by parallel longitudinal seams which define a plurality of parallel tubelets. The textile sheet material comprises an electrolyte-resistant nonwoven fabric which is reinforced by a woven or laid fabric of electrolyte-resistant fibers.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: February 20, 1979
    Assignees: Carl Freudenberg, Gottfried Hagen AG
    Inventors: Harald Hoffman, Dietmar Appel