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Supply valve and diaphragm for a pneumatically-operated gas demand apparatus

  • US 6,318,366 B1
  • Filed: 09/22/1999
  • Issued: 11/20/2001
  • Est. Priority Date: 09/22/1999
  • Status: Expired due to Term
First Claim
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1. A flexible diaphragm member adapted for disposition in a chamber formed between first and second housing parts of a valve housing wherein the first and second housing parts include respective first and second cooperating fluid passageways, said diaphragm member comprising:

  • a central sealing portion for dividing the chamber into a supply chamber region and a control chamber region; and

    means integral with said central sealing portion for enabling fluid communication between the first and second fluid passageways, said means integral with said central sealing portion comprising a projection extending outwardly from a peripheral edge of said central sealing portion, said projection including an aperture for permitting communication between the first and second fluid passageways.

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