Patents by Inventor Frederick Charles Frost

Frederick Charles Frost 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).

  • Soap dispenser
    Patent number: 5988440
    Abstract: Liquid soap dispenser for sensing the presence of a user's hands in the vicinity of a nozzle (6), and dispensing soap through the nozzle (6) in response to the detection of the user's hands. The dispenser includes a cylinder (10) and a plunger (21) within the cylinder (10), a magnetic core (12) coupled to the cylinder (10) or the plunger (21), and a solenoid (14) which is activated in response to the detection of a user's hands to cause relative movement of the plunger (21) within the cylinder (10) to dispense the soap. Preferably a plurality of dispensers are connected to a single reservoir of liquid soap.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: November 23, 1999
    Assignee: F C Frost Limited
    Inventors: Peter Saunders, William Start, Frederick Charles Frost