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Connecting device for intermittent air flow

  • US 4,124,046 A
  • Filed: 10/18/1976
  • Issued: 11/07/1978
  • Est. Priority Date: 10/16/1975
  • Status: Expired due to Term
First Claim
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1. In combination with a mobile container having an opening for passage of conditioning air, and a wall forming a port for supplying said conditioning air, a connecting device for alternately establishing and breaking fluid communication between said opening and said port, said device comprising a collar attachable to said wall around said port, a separate body forming a sealing surface, a tubular element displaceable in the collar substantially coaxially of said opening between an extended position, where one end of said element seals around said container opening and the other end of said element is spaced from said sealing surface, whereby an air passage is formed between said other end and said sealing surface, and a retracted position where said one end is spaced from said container opening and said other end seals against said sealing surface, whereby flow of conditioning air through the tubular element is cut off, and legs connecting said separate body to said collar and forming flow paths between said legs, said paths allowing the conditioning air to pass between said port and said air passage.

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