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Expiration valve control for automatic respirator

  • US 4,611,591 A
  • Filed: 07/02/1985
  • Issued: 09/16/1986
  • Est. Priority Date: 07/10/1984
  • Status: Expired due to Term
First Claim
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1. In an expiration valve control adapted to control an expiration valve installed in an expiration circuit of an automatic respirator,a control pressure generating means for generating a control pressure for controlling the opening and closing of an expiration value, a pressure control means for controllably increasing said control pressure,a pressure detector means for detecting said increased pressure,an exhaust control means for controllably releasing said increased pressure, anda control means for controlling said pressure control means and said exhaust control means on the basis of the result detected by said pressure detector means such that said increased pressure will be maintained at a predetermined pressure level.

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