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Fluid sampling bottle usable in deep bore holes

  • US 5,139,085 A
  • Filed: 04/25/1991
  • Issued: 08/18/1992
  • Est. Priority Date: 05/10/1990
  • Status: Expired due to Fees
First Claim
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1. A fluid sampling bottle usable in deep bore holes having a central body (2) within which is defined a sampling volume (4), means for the fluid filling of said sampling volume (4) when the bottle is located on a sampling site (1), means for closing the sampling volume (4) when the bottle is filled with fluid and a tap (24) for emptying the sampling volume (4), characterized in that the fluid filling means and the means for closing the sampling volume are constituted by a non-return valve (6) placed in a filling sleeve (8) located on a filling pipe (10) linked with the exterior by at least one outer end (12) and with the sampling volume (4) by an inner end (14), the non-return valve (6) being equipped with a spring (16) calibrated to a predetermined pressure difference value for stopping the filling when said pressure difference between the sampling volume (4) and the sampling pipe (10) intake has reached said predetermined value, a longitudinal piston (20) actuated by a motor (18) for freeing the filling pipe (10) before filling and obstructing it after filling and the tap (24) is used for forming a vacuum in the sampling volume (4) prior to the use of the bottle.

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