×

Medical testing device

  • US 3,913,790 A
  • Filed: 08/23/1974
  • Issued: 10/21/1975
  • Est. Priority Date: 08/23/1974
  • Status: Expired due to Term
First Claim
Patent Images

1. A medical testing device for mixing first and second liquids in a testing chamber, said device comprising:

  • a housing having an outer surface and a visable testing chamber;

    first and second liquid inlet passageways in said housing intersecting said outer surface and adapted to receive unmeasured quantities of said first and second liquids, respectively;

    each of said first and second inlet passageways having a lower outlet and;

    a transfer element having two cavities with calibrated volumes;

    means for moving said transfer element in said housing between a first position with one of said cavities aligned with and in communication with each of said outlet ends and a second position with said cavities aligned with said chamber whereby measured volumes of said liquids in said cavities are deposited into said chamber for mixing and testing;

    first and second air vent passageways extending in said housing from said outer surface; and

    , third and fourth air vent passageways in said transfer element and each communicated with one of said cavities, said first and third air vent passageways and said second and fourth air vent passageways being in communication when said transfer element is in said second position.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×