Patents by Inventor Leonard E. Sharp

Leonard E. Sharp 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).

  • Vacuum/shampoo apparatus
    Patent number: 4658464
    Abstract: An apparatus for spraying a shampoo solution through a shampoo solution supply conduit to a nozzle as the nozzle is moved over an area of upholstery, carpet and the like while dirty shampoo solution is drawn back through the nozzle to a vacuum tank by vacuum suction. A mechanism is provided to apply the vacuum suction to the shampoo solution supply conduit at the end of the cleaning operation to effectively clear the shampoo solution supply conduit and nozzle of the shampoo solution.
    Type: Grant
    Filed: March 26, 1986
    Date of Patent: April 21, 1987
    Inventor: Leonard E. Sharp