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Coupling device

  • US 5,311,899 A
  • Filed: 02/24/1993
  • Issued: 05/17/1994
  • Est. Priority Date: 02/24/1993
  • Status: Expired due to Fees
First Claim
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1. In a coupling device comprising means for fixing a solution supplying male pipe, which is to be inserted into a cleaning chamber, adjacent and in opposite to a solution supplied female pipe which is arranged in the cleaning chamber, and means for moving the solution supplied female pipe in such a direction that it can be connected to the solution supplying male pipe, said coupling device further comprising a check valve arranged in that end portion of a solution passage in the male pipe which is located on the side of the female pipe;

  • a valve pusher formed in that end portion of a solution passage in the female pipe which is located on the side of the male pipe to push the female pipe against the male one so as to cause the check valve to open the solution passage in the male pipe;

    a valve system arranged in the rear end portion of the solution passage in the female pipe;

    a cleaning liquid passage communicated with the solution passage in the female pipe to supply cleaning liquid through it; and

    a check valve arranged in the outlet of the cleaning liquid passage.

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