Patents by Inventor Jacob P. Persem

Jacob P. Persem 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).

  • Continuously variable capacity refrigeration system
    Patent number: 4765150
    Abstract: A refrigeration compressor system using a reciprocating compressor with continuously variable capacity. The speed of the compressor can be varied substantially continuously over predefined range of speeds. A controller for the compressor monitors one or more physical parameters indicative of the temperature of the application being refrigerated, such as the temperature itself and/or the pressure in the compressor's refrigerant suction line. Using a predefined algorithm, the controller adjusts the speed of said compressor so as to keep said monitored parameter within a predefined target range. In a preferred embodiment, the compressor is an open direct drive compressor. The compressor's motor has a substantially continuous range of useable operating speeds which varies by a ratio of more than two to one.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: August 23, 1988
    Assignee: Margaux Controls, Inc.
    Inventor: Jacob P. Persem
  • Continuously variable capacity refrigeration system
    Patent number: RE33620
    Abstract: A refrigeration compressor system using a reciprocating compressor with continuously variable capacity. The speed of the compressor can be varied substantially continuously over predefined range of speeds. A controller for the compressor monitors one or more physical parameters indicative of the temperature of the application being refrigerated, such as the temperature itself and/or the pressure in the compressor's refrigerant suction line. Using a predefined algorithm, the controller adjusts the speed of said compressor so as to keep said monitored parameter within a predefined target range. In a preferred embodiment, the compressor is an open direct drive compressor. The compressor's motor has a substantially continuous range of useable operating speeds which varies by a ratio of more than two to one.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: June 25, 1991
    Assignee: Margaux, Inc.
    Inventor: Jacob P. Persem