Patents by Inventor Esmond Grattan

Esmond Grattan 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).

  • Air/oil mixture as a lubricant
    Patent number: 5415249
    Abstract: An air/oil mixture can conveniently be used as a lubricant. To produce the lubricant, oil under pressure is supplied alternately to a pair of separate oil lines (4,5) and at least one dual-line metering valve (8) is connected to the lines to receive oil from each line in turn and to inject a predetermined quantify of oil into a mixing zone each time the supply of oil is changed from one line to the other. Air under pressure is supplied to the mixing zone to mix with the oil injected into the zone.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: May 16, 1995
    Assignees: Davy McKee (Sheffield) Limited, Denco Limited
    Inventors: Esmond Grattan, David Macklin