Patents by Inventor Bernard Gurstein

Bernard Gurstein 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).

  • Upholstery and carpet cleaning equipment including external heat exchanger
    Patent number: 5287588
    Abstract: An independent unit heat exchanger is provided downstream of a machine for cleaning upholstery and/or carpets so that unheated detergent water from the cleaning machine passes through a hose and then through the heat exchanger where it is heated to an elevated temperature, and then to the cleaning nozzle where it is discharged. The heat exchanger is provided with an electric heating core about which pipe carrying the detergent water is coiled.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: February 22, 1994
    Assignee: U.S. Products, Inc.
    Inventors: Bernard Gurstein, Russell Gurstein
  • Multiple circuit overload protection device
    Patent number: 5229908
    Abstract: A sensor connected to two different phases of an electrical wiring system provides positive protection against overloading of any single phase by preventing operation of one circuit load when there is no phase difference between the wiring circuits.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: July 20, 1993
    Assignee: U.S. Products, Inc.
    Inventors: Bernard Gurstein, Russell Gurstein
  • Kit for fabric cleaning device
    Patent number: 5001806
    Abstract: A fabric cleaning apparatus including a vacuum hose and a liquid spray nozzle is provided with a cleaning wand having a universal head support for accepting any one of a series of different sized and/or shaped cleaning head attachments, each being adapted for a particular fabric cleaning function.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: March 26, 1991
    Assignee: U.S. Products Inc.
    Inventor: Bernard Gurstein
  • Cleaning machine for carpet, upholstery and draperies
    Patent number: 4803466
    Abstract: A cleaning machine for carpet, upholstery, draperies, and the like is designed with a safety system to prevent the cleaning liquid from being inadvertently overheated. The system senses the electrical conductivity or the density of the liquid and then limits the heating to a temperature which has been programmed to correspond that conductivity or density.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: February 7, 1989
    Assignee: U.S. Products, Inc.
    Inventors: Bernard Gurstein, Russell S. Gurstein
  • External heat exchanger for upholstery and carpet cleaning equipment
    Patent number: D326545
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: May 26, 1992
    Assignee: U. S. Products, Inc.
    Inventors: Bernard Gurstein, Russell Gurstein