Patents by Inventor Gustav A. Johansson

Gustav A. Johansson 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).

  • Dryer for a refrigeration plant
    Patent number: 4601179
    Abstract: The invention relates to a dryer unit for an encapsulated refrigerant compressor unit. The capsule of the compressor unit has suction and compression nipples and an auxiliary nipple. A dead end housing unit containing a drying agent is connected to the auxiliary nipple.
    Type: Grant
    Filed: July 5, 1985
    Date of Patent: July 22, 1986
    Assignee: Danfoss A/S
    Inventor: Gustav A. Johansson
  • Valve apparatus for evacuating and/or filling a refrigeration system
    Patent number: 4561264
    Abstract: The invention relates to a valve apparatus for evacuating and/or filling a refrigeration system having a hermatically closeable connecting tube. The apparatus includes a piston and cylinder unit which has a central passage for receiving such a connecting tube and is pressure operable to squeeze a sealing ring into sealing engagement with the tube to facilitate the subsequent filling or evacuating of the system through the tube via valving located in a valve block connected to the piston.
    Type: Grant
    Filed: October 17, 1984
    Date of Patent: December 31, 1985
    Assignee: Danfoss A/S
    Inventor: Gustav A. Johansson
  • Apparatus for conveying liquids
    Patent number: 4554791
    Abstract: The invention relates to an apparatus for conveying liquids of which the vapor pressure is above atmospheric at ambient temperatures from a storage container to a delivery point, particularly for dispensing refrigerant.
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: November 26, 1985
    Assignee: Danfoss A/S
    Inventor: Gustav A. Johansson
  • Vacuum cleaner nozzle with rotatable comb-shaped part
    Patent number: 4100644
    Abstract: A nozzle for a vacuum cleaner which has an elongated comb-shaped part that can be rotated from a retracted position within the nozzle housing to another position in which it is extended out of the housing for use with a deep pile rug. The comb-shaped part has a cylindrical surface which moves adjacent to the suction channel and has an opening therein for communication between the comb-shaped part and the suction channel when said part is in its fully extended position.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: July 18, 1978
    Assignee: Aktiebolaget Electrolux
    Inventor: Erik Karl Gustav Johansson
  • Vacuum cleaner tool for cleaning deep pile carpets
    Patent number: 4045840
    Abstract: A vacuum cleaner nozzle tool that is connected to a source of negative pressure and which functions to clean deep pile carpet or shag rugs in an efficient manner and which at the same time raises the pile of the rug or carpet in order to improve the appearance thereof. To achieve this objective the nozzle is provided with slide means of a particular configuration.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: September 6, 1977
    Assignee: Aktiebolaget Electrolux
    Inventor: Erik Karl Gustav Johansson
  • Vacuum cleaner nozzle with a movable brush
    Patent number: 4020526
    Abstract: A vacuum cleaner suction nozzle having a brush that is so mounted and arranged as to be capable of moving transversely of the length direction of the nozzle and during part of this movement is elevated from the work surface, while another part of the movement engages the work surface. During the latter movement, the dust and larger dirt particles are raised from the work or rug surface so as to be entrained with the air flow being drawn into the vacuum cleaner.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: May 3, 1977
    Assignee: Aktiebolaget Electrolux
    Inventor: Erik Karl Gustav Johansson