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Drip counter apparatus

  • US 5,982,289 A
  • Filed: 09/25/1998
  • Issued: 11/09/1999
  • Est. Priority Date: 09/25/1998
  • Status: Expired due to Fees
First Claim
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1. In apparatus for counting a succession of falling liquid drops having teardrop shape, with a downwardly convex lower side, the combination that includesa) a beam provider for providing a beam of electromagnetic radiation to sidewardly pass into the drop at its convex lower side, to be refracted within the drop to pass out of the drop at its convex lower side,b) and a beam detector located to only detect the refracted beam after it has passed sidewardly out of the drop at its convex lower side,c) and wherein the beam provider and detector are located to respectively provide and receive the beam along respective axes located below a drop maximum width zone, said axes forming an acute angle therebetween, whereby the beam remains undetected in the absence of drop passage through the beam.

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