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Check-valve mechanisms for a pulse combustion apparatus

  • US 4,955,805 A
  • Filed: 02/13/1989
  • Issued: 09/11/1990
  • Est. Priority Date: 06/04/1988
  • Status: Expired due to Term
First Claim
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1. A check-valve mechanism of a pulse combustion apparatus for passing air into a mixing chamber, comprising(i) a partition wall separating an air inlet chamber and said mixing chamber from each other,(ii) a plurality of associated rear discs of relatively small diameters spaced apart from said partition wall and located inside said mixing chamber,(iii) a plurality of associated front discs, or valve members, of substantially the same diameters as said rear discs which are located between said partition wall and said rear discs and are each formed of woven fabric of carbon fiber coated with fluorocarbon resin,(iv) each said rear disc, the valve member associated therewith, and a circular portion of said partition wall which overlies the valve member as viewed from the side of said air inlet chamber each having a central opening and being joined together by bolt means which passes through the central openings thereof,(v) the circular portions of said partition wall each having around the central openings thereof a plurality of radially-extended elongated openings for passing air from said air inlet chamber into said mixing chamber,(vi) each said rear disc having around the central opening thereof a plurality of small circular openings which do not overlap the elongated openings of the circular portion of said partition wall corresponding to the rear disc as viewed from an axial direction, and(vii) each said valve member being axially movable between said partition wall and the associated rear disc, thereby opening and closing said elongated openings of the associated circular portion of said partition wall.

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