Patents by Inventor Hans E. E. Olson

Hans E. E. Olson 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).

  • Method for defrosting and device for the implementation of said method
    Patent number: 4813239
    Abstract: A refrigeration system comprises a plurality of evaporators and a plurality of conduits for feeding cooling-medium vapor evaporated in the evaporators to a plurality of compressors having a common outlet header for compression therein. Conduits extends between the common outlet header of the compressors and the inlets of the evaporators to feed the heated cooling-medium vapor produced by the compressors to one, several or all of the evaporators for defrosting the same.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: March 21, 1989
    Inventor: Hans E. E. Olson
  • Device for returning oil to at least one compressor in a cooling or refrigerating system
    Patent number: 4702089
    Abstract: This invention relates to a device for returning oil to at least one compressor (1) in a cooling or refrigerating system, in which the compressor sucks oil (16) from an oil collecting container (13) through at least one suction conduit (14) connected to the collecting container (13) and having one or more gas and oil intakes (15) which is or are situated above the oil level (16a) in the collecting container (13).
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: October 27, 1987
    Inventor: Hans E. E. Olson