Patents by Inventor Robert D. Abrams

Robert D. Abrams 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).

  • Wheel lift assembly for floor treating apparatus
    Patent number: 9700191
    Abstract: A floor treating apparatus comprises a chassis, a cleaning head assembly and a wheel lift assembly. The chassis has a wheel assembly and a handle assembly. The cleaning head assembly comprises a motor mounting plate that is suspended from the chassis at pivot points. The wheel lift assembly comprises a cam mounted between the chassis and the motor mounting plate, and a lever for rotating the cam to tilt the motor mounting plate on the pivot points.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: July 11, 2017
    Assignee: NILFISK, INC.
    Inventors: Donald Joseph Legatt, William Randall Stuchlik, Robert D. Abrams
  • Precision-ratioed fluid-mixing device and system
    Patent number: 5544810
    Abstract: A fluid-mixing device and a fluid-dispensing system are disclosed. The fluid-mixing device comprises a nozzle (200) having an outlet (210), an inlet (208) adapted for receiving a high-pressure liquid diluent, a nozzle mixing chamber (226), an orificed fluid passageway (236) communicating with the mixing chamber (226), and an orificed fluid-metering element (180) in fluid communication with the fluid passageway (236). A vacuum effect is created in the mixing chamber (226) when high-pressure liquid is passed from the nozzle inlet (208) to the nozzle outlet (210).
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: August 13, 1996
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: Stephen R. Horvath, Jr., Robert D. Abrams, Thomas A. Helf