COMPACT SPRING LOADED FUEL CELL MONOPOLAR STACK
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United States of America Patent
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Issued Date -
May 20, 2010
app pub date -
Nov 20, 2008
filing date -
Nov 20, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A spring assembly for use with a direct oxidation fuel cell system is provided. The spring assembly includes a pair of spring elements, placed over each of the major dimensions of the fuel cell, such that the top and bottom spring elements provide at least a portion of the load to the fuel cell for the required compression. The springs are designed to be fully compressed under the design pressure and are held in the compressed state by two side clamps thus providing a uniform planar pressure distribution across the fuel cell system. The spring elements each include several grooves formed therein extending towards center of the element. The side clamps include fastening members which are fingerlike extensions that fit within the grooves of the spring elements to hold the springs in tight engagement over the fuel cell system, with out bolts, pins or other fasteners.
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