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Sampling apparatus

  • US 4,475,411 A
  • Filed: 03/18/1982
  • Issued: 10/09/1984
  • Est. Priority Date: 03/20/1981
  • Status: Expired due to Term
First Claim
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1. Apparatus for taking a sample of liquid from each of a plurality of sealed containers each having pierceable closures, comprising a carrier, container receiving means in said carrier for receiving and holding a plurality of said sealed containers, means on the apparatus for supporting said carrier for rotation about the central axis thereof in a plane generally normal thereto and drive means for said carrier to cause the containers held thereby to follow a defined path to a sampling station disposed along the path and each container being inverted at least once during its movement along said path with movement of the carrier whereby to cause agitation of liquid in the containers, sampling means disposed at the sampling station, means for arresting a container at the sampling station with respect to said sampling means, and means for actuating said sampling means to effect withdrawal of a sample from the container, said sampling means including piercing needle means arranged at said sampling station for selective operation to pierce the closure of the sealed container when the container is stopped at the sampling station whereby to advance said needle means into the container and means for holding the container during withdrawal of sample therefrom.

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