Patents by Inventor Luigi Dolcino

Luigi Dolcino 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).

  • Turbomolecular pump
    Patent number: 5238362
    Abstract: A high vacuum pump comprising an in-line connection on a single drive shaft of an axial turbomolecular compressor and a peripheral compressor where the pump provides better than 10.sup.-7 Pascal inlet when exhausting to atmosphere. The peripheral compressor has a two stage optimized Gaede design which encloses the impellers in a shroud reducing the top and bottom volume surrounding the impellers and providing a large separation pressure drop region between stages of said peripheral compressors to reduce axial leakage.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: August 24, 1993
    Assignee: Varian Associates, Inc.
    Inventors: Fausto Casaro, Luigi Dolcino, Mars Hablanian, Giampaolo Levi