Patents by Inventor Viktor Lochle

Viktor Lochle 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).

  • Dosing device for analyzing apparatus
    Patent number: 5194226
    Abstract: In a dosing device for analyzing apparatus, particulary for liquid chromatography, with a dosing loop, a change-over valve and a dosing needle (20) which can be introduced into a sample inlet (56) of the change-over valve (24), through which dosing needle (20) sample liquid can be dosed by means of a sample pump (66) into the sample inlet (56) and the dosing loop (22), the dosing needle (20) has a conical sealing surface (138) at its front end. The sample inlet (56) has a sample inlet passage (128) which forms a conical annular shoulder (136). The dosing needle (20) with its conical sealing surface (138) engages this annular shoulder (136) with a defined pre-stress.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: March 16, 1993
    Assignee: Bodenseewerk Perkin-Elmer GmbH
    Inventors: Toma Tomoff, Wolfgang Chlosta, Viktor Lochle, Henry Klemm