Patents by Inventor Jonathan Mark St. John Harris

Jonathan Mark St. John Harris 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).

  • Oxygen therapy apparatus
    Patent number: 6568391
    Abstract: An oxygen therapy apparatus for supply of oxygen to patients. The device comprises an inlet port (17) for receiving high pressure oxygen from a cylinder and an outlet port (1) for supplying oxygen to a patient, typically via a single tube cannula (not shown). Three valves control the supply of oxygen to the patient: a diaphragm valve (42) senses the pressure at the outlet (1) and, in particular senses whether the patient is inhaling or exhaling. A valve (36) controls the supply of oxygen to the patient via an inlet jet (25) which is selectably closed by a piston (20) incorporating a flexible seat (24). Movement of the piston (20) is in turn controlled by a pilot valve (37) in dependence on the state of the diaphragm valve (42). The device gives a pulsed output to the patient during inhalation, but shuts off during exhalation to economise on the use of oxygen.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: May 27, 2003
    Assignee: Protector Technologies, B.V.
    Inventors: Andrew Richard Thomas Tatarek, Jonathan Mark St. John Harris