Patents by Inventor John F. Stucker

John F. Stucker 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).

  • System for rejuvenating pressurized fluid solvents used in cleaning substrates
    Patent number: 6082150
    Abstract: Method and system of rejuvenating pressurized fluid solvents used for cleaning a substrate in a pressurized vessel. A primary flow of the pressurized fluid solvent is continuously cycled from the pressurized vessel through a series of filters to remove insoluble and soluble contaminants, and then returned to the pressurized vessel. A secondary flow of the pressurized fluid solvent, preferably equivalent to less than about 40% of the primary flow, is directed either continuously or intermittently during the cleaning operation to an evaporator to evaporate the pressurized fluid solvent of the secondary flow into a vapor and to separate contaminants therefrom. The vapor from the evaporator is then either liquified by a compressor or condenser to create rejuvenated pressurized fluid solvent and redirected to the pressurized vessel for further use, or vented to atmosphere and replaced by new pressurized fluid solvent from a supply tank.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: July 4, 2000
    Assignee: R.R. Street & Co. Inc.
    Inventor: John F. Stucker
  • Method and system for rejuvenating pressurized fluid solvents used in cleaning substrates
    Patent number: 5937675
    Abstract: Method and system of rejuvenating pressurized fluid solvents used for cleaning a substrate in a pressurized vessel. A primary flow of the pressurized fluid solvent is continuously cycled from the pressurized vessel through a series of filters to remove insoluble and soluble contaminants, and then returned to the pressurized vessel. A secondary flow of the pressurized fluid solvent, preferably equivalent to less than about 40% of the primary flow, is directed either continuously or intermittently during the cleaning operation to an evaporator to evaporate the pressurized fluid solvent of the secondary flow into a vapor and to separate contaminants therefrom. The vapor from the evaporator is then either liquified by a compressor or condenser to create rejuvenated pressurized fluid solvent and redirected to the pressurized vessel for further use, or vented to atmosphere and replaced by new pressurized fluid solvent from a supply tank.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: August 17, 1999
    Assignee: R.R. Street & Co. Inc.
    Inventor: John F. Stucker
  • Method for rejuvenating pressurized fluid solvent used in cleaning a fabric article
    Patent number: 5772783
    Abstract: Method and system of rejuvenating pressurized fluid solvents used for cleaning a substrate in a pressurized vessel. A primary flow of the pressurized fluid solvent is continuously cycled from the pressurized vessel through a series of filters to remove insoluble and soluble contaminants, and then returned to the pressurized vessel. A secondary flow of the pressurized fluid solvent, preferably equivalent to less than about 40% of the primary flow, is directed either continuously or intermittently during the cleaning operation to an evaporator to evaporate the pressurized fluid solvent of the secondary flow into a vapor and to separate contaminants therefrom. The vapor from the evaporator is then either liquified by a compressor or condenser to create rejuvenated pressurized fluid solvent and redirected to the pressurized vessel for further use, or vented to atmosphere and replaced by new pressurized fluid solvent from a supply tank.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: June 30, 1998
    Assignee: R.R. Street & Co. Inc.
    Inventor: John F. Stucker