Patents Assigned to Zerpa Industries, Inc.
  • Patent number: 4534830
    Abstract: A method for recovering clean solvent from a mixture of solvent and contaminants. An open top tank is mounted in a housing below a sink in which articles to be cleaned with solvent are placed. The sink has a tap through which solvent is directed so that the articles can be cleaned by hand in the sink itself. A disposable, plastic bag is receivable in the tank and the tank is closed by a cover. Contaminated solvent can flow from the sink, through the cover and into the bag in the tank. Contaminated solvent in the bag is heated by heating a liquid surrounding the side wall of the tank and below the bottom of the tank so that the solvent in the bag will vaporize. A tube leading out of the tank carries solvent vapor into a heat exchanger where the vapor is condensed to form clean, liquid solvent, and the liquid solvent is collected in a reservoir. A pump is coupled to the reservoir for pumping liquid solvent to the tap at the sink. The bag can be disposed of after the solvent has been vaporized therefrom.
    Type: Grant
    Filed: October 5, 1983
    Date of Patent: August 13, 1985
    Assignee: Zerpa Industries, Inc.
    Inventor: Manuel G. Pastor
  • Patent number: 4457805
    Abstract: Apparatus and method for recovering clean solvent from a mixture of solvent and contaminants. The apparatus includes an open top tank mounted in a housing below a sink in which articles to be cleaned with solvent are placed. The sink has a tap through which solvent is directed so that the articles can be cleaned by hand in the sink itself. A disposable, plastic bag is receivable in the tank and the tank is closed by a cover. Contaminated solvent can flow from the sink, through the cover and into the bag in the tank. Contaminated solvent in the bag is heated by heating a liquid surrounding the side wall of the tank and below the bottom of the tank so that the solvent in the bag will vaporize. A tube leading out of the tank carries solvent vapor into a heat exchanger where the vapor is condensed to form clean, liquid solvent, and the liquid solvent is collected in a reservoir. A pump is coupled to the reservoir for pumping liquid solvent to the tap at the sink.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: July 3, 1984
    Assignee: Zerpa Industries, Inc.
    Inventor: Manuel G. Pastor