Primary dry cell

• US 2,903,498 A
• Filed: 11/25/1957
• Issued: 09/08/1959
• Est. Priority Date: 11/25/1957
• Status: Expired due to Term

• Current Assignee: Johann Sindel, Otto Zottmann, Richard Huber
• Original Assignee: Johann Sindel, Otto Zottmann, Richard Huber
• Inventors: JOHANN SINDEL, Huber, Richard, OTTO ZOTTMANN
• Application Number:
  US03/698,865
• Time in Patent Office: 652 Days
• US Class Current: 429/134
• CPC Class Codes: H01M 6/06 Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
• CPC Class Codes: H01M 6/22 Immobilising of electrolyte

Claims

1. A PRIMARY DRY CELL, COMPRISING A SOLUBLE NEGATIVE ELECTRODE, A POSITIVE ELECTRODE, AN INNER ELECTROLYTE, AN OUTER ELECTROLYTE, A MOLDED POROUS DEPOLARIZER ELEMENT POSITIONED BETWEEN SAID NEGATIVE AND SAID POSITIVE ELECTRODES, ITS PORES BEING PARTLY FILLED WITH THE INNER ELECTROLYTE, AND A SEPARATOR LAYER POSITIONED BETWEEN, AND IN CONTACT WITH, SAID DEPOLARIZER ELEMENT AND SAID NEGATIVE ELECTRODE AND CARRYING THE OUTER ELECTROLYTE, THE INNER ELECTRODE FILLING NO MORE THAN ABOUT 75% OF THE VOLUME OF THE PORES OF THE DEPOLARIZER ELEMENT, THE SPECIFIC WEIGHT OF THE INNER ELECTROLYTE BEING AT LEAST 1.2 G/CC., THE OUTER ELECTROLYTE OF THE SEPARATOR LAYER CONTAINING AT LEAST ONE THICKENING AGENT SELECTED FROM THE GROUP CON-SISTING OF FLOUR AND STARCH AND AT LEAST ONE ADDITIVE CAPABLE OF INCREASING ITS INITIAL VISCOSITY, SAID ADDITIVE BEING SELECTED FROM THE GROUP CONSISTING OF A WATER SOLUBLE CELLULOSE ETHER, A WATER SOLUBLE CARBOXY ALKYL CELLULOSE, A VEGETABLE GUM, AND A WATER SOLUBLE POLYVINYL ALCHOL.