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HYDRAULIC ACCUMULATOR AND METHOD OF MANUFACTURE

  • US 20100084033A1
  • Filed: 10/02/2009
  • Published: 04/08/2010
  • Est. Priority Date: 10/03/2008
  • Status: Active Grant
First Claim
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1. An accumulator for a hydraulic system comprising:

  • a polymer liner defining a cavity;

    a metal bellows assembly housed in the cavity and separating the cavity into a first chamber and a second chamber, with the first and second chambers isolated from one another by the bellows assembly;

    a composite shell substantially encasing the liner;

    wherein the liner and shell are configured so that the first chamber receives hydraulic fluid and delivers hydraulic fluid through an opening in the liner and the shell as the bellows assembly expands and compresses due to pressurized gas in the second chamber balancing changes in fluid pressure in the first chamber.

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