Patents by Inventor John E. Sokol

John E. Sokol 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).

  • Automatic toilet bowl cleaner with a metered dispensing of cleaning composition
    Patent number: 4896382
    Abstract: An automatic bottom-of-the-tank toilet bowl cleaner device which dispenses a metered amount of cleaning solution into a toilet bowl after each flush. The device has a reservoir which contains concentrated cleaning solution. The reservoir has a vent which is ordinarily closed off by a flotation unit, thus preventing the cleaning solution from being released into the tank. When the toilet is flushed, the water level in the tank drops, thereby lowering the flotation unit, allowing air to enter the reservoir through the vent, and releasing a measured quantity of cleaning solution into the toilet tank.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: January 30, 1990
    Assignee: Block Drug Company, Inc.
    Inventors: John E. Sokol, Peter J. Mackinson