Patents by Inventor Lennox Birckhead, Jr.

Lennox Birckhead, Jr. 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).

  • Powder deposition system
    Patent number: 3970035
    Abstract: Apparatus and method for electrostatically depositing a layer of particulate material on a substrate surface from a gaseous suspension of particulate, thermoplastic material. Classifying means removes oversized particles from a supply of particulate, thermoplastic material and feeds properly-sized particulate material to a metering feed device. A pressure responsive sensing means is associated with the metering feed device, and energizes a control circuit associated with the classifying means to direct properly-sized particulate material from the classifying means into the metering feed device to maintain a substantially constant, predetermined amount of properly-sized particulate material in the metering feed device.
    Type: Grant
    Filed: November 20, 1973
    Date of Patent: July 20, 1976
    Assignee: Vitek Research Corporation
    Inventor: Lennox Birckhead, Jr.