Abstract: Mixed crystals of the general formulaNa.sub.1+x M.sub.2-1/3x+y Si.sub.x Z.sub.3-x O.sub.12-2/3x+2ywhereinM represents one of the transition metals of the Fourth Group of the Peric System, Zr, Ti, Hf or mixtures thereof, Z represents one of the elements of the Fifth Group of the Periodic System, P, Sb, Bi, V, Nb, Ta or mixtures thereof, andx represents a number from 0.01 to 3, andy a number from 0 to 0.5,are new, and are suitable as ion-conducting electrolyte in electrochemical cells.
Type:
Grant
Filed:
August 28, 1981
Date of Patent:
April 15, 1986
Assignees:
Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., Varta Batterie AG
Inventors:
Michael F. Bell, Hans Hofer, Holger Diem, Ulrich von Alpen
Abstract: An accumulator with plate element of positive and negative electrode plates with interposed separators, lugs on the electrode plates interconnected by connecting straps, and at least one rib secured on the top surface of the plate and separator to secure the plate element to end walls. This enhances the capability of the accumulator to withstand vibration, i.e. makes it shake-resistant.
Abstract: An electric primary cell having a metal casing includes a cup electrode disposed in the metal casing and a cardboard sleeve in the metal casing between the latter and the cup electrode. The metal casing has an inwardly flanged upper edge and a cover disc having an outer edge is disposed on the metal casing. A resilient plastic material is disposed between the flanged upper edge of the metal casing, the sleeve, and the outer edge of the cover disc.
Type:
Grant
Filed:
July 9, 1973
Date of Patent:
April 27, 1976
Assignee:
Varta Batterie AG
Inventors:
Hermann Fullenbach, Friedrich Christof, Alois Franzl
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