Patents by Inventor David N. Armstrong

David N. Armstrong 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).

  • Publication number: 20020000449
    Abstract: A pair of sensors (20A and 20B) are mounted at the entrance to a germ sensitive area. When a person enters the area the sensors are activated in sequence, indicating the direction of movement of the person. An indicator, such as a light or sound alarm is mounted upon an antiseptic dispenser, located within the area. The alarm is actuated by the movement and is de-activated once antiseptic is dispensed from the unit. Likewise when the person moves out of the germ sensitive area, the alarm on a dispenser unit located outside the area is energized and is de-activated upon dispensing of antiseptic.
    Type: Application
    Filed: June 27, 2001
    Publication date: January 3, 2002
    Inventor: David N. Armstrong