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CORE CATCHER FOR CORE SAMPLERS

  • US 3,807,234 A
  • Filed: 08/14/1972
  • Issued: 04/30/1974
  • Est. Priority Date: 08/14/1972
  • Status: Expired due to Term
First Claim
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1. A core catcher for use in a core sampler comprising a hollow semi-ellipsoidal body having a first opening at one end thereof, said body being slit from its opposite end to form a plurality of resilient, flexible fingers adjacent one another, each of said fingers having a free end and terminating short of one another to form a second opening normally smaller in size than that of said first opening, the flexibility and resiliency of said fingers enabling them to be flexed in a direction to increase the size of said second opening in response to the movement of material to be sampled through said body in a direction from said one end thereof toward said opposite end, the flexibility and resiliency of said fingers enabling said fingers also to be flexed in a direction to decrease the size of said second opening, and the length of each of said fingers being such as to enable its free end to overlap the free end of an opposed finger and close said second opening whereby sample material having passed through both of said openings may be supported by the overlapping fingers.

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