Patents by Inventor Joseph Sibrava

Joseph Sibrava has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for preparing a liquid sample
    Patent number: 4205549
    Abstract: Method and apparatus for preparing a liquid sample for combustion and analysis in an elemental analyzer. In order to avoid damage to the quartz combustion tube and ladle by molten aluminum, the sample is placed in an aluminum foil vial which is crimped and placed in turn in an open ended capsule of nickel or other non-reactive metal. The capsule is then distorted by a novel encapsulator to partially obstruct the open end and retain the liquid sample vial therein during the combustion process.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: June 3, 1980
    Assignee: The Perkin-Elmer Corporation
    Inventor: Joseph Sibrava
  • Sample transport with rotary air interlock charging and discharging means
    Patent number: 4055259
    Abstract: A compact, sealable sample transport apparatus for conveying material from a supply to a combustion chamber, includes an elongated ladle member longitudinally moved in a conduit to the combustion chamber and coacting rotary magazine and transfer plate members, sealed with respect to one another so as to enable discrete analytical specimens to be loaded into and, after analysis, discharged from the ladle member without substantial exposure of the interior of the apparatus to the ambient atmosphere.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: October 25, 1977
    Assignee: The Perkin-Elmer Corporation
    Inventor: Joseph Sibrava