Patents by Inventor David G. Page

David G. Page 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).

  • Patent number: 5062548
    Abstract: A beverage dispensing system has a valve in a tap controlling dispensing of the beverage through a first passage from a second rigid or flexible container. Air, nitrogen (or other inert gas) or carbon dioxide gas from a passage is introduced into the beverage in the first passage during dispensing for development of a head of froth. The introduced gas flows under pressure (which is preferably adjustable) from the second passage and by way of a capilliary tube restrictor and a non return valve communicating with the tube into the beverage in the first passage. The non return valve has a resilient diaphragm which normally closes that valve and is displaceable under gas pressure to admit the gas to the beverage. A labyrinthine mixer is located in the first passage downstream of the position where the gas is introduced.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: November 5, 1991
    Assignee: Arthur Guinness Son and Company (Great Britian) Limited
    Inventors: John B. Hedderick, Brian R. Rutty, David G. Page, John J. Walshe