Patents by Inventor Richard L. Jefferson

Richard L. Jefferson 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: 5931355
    Abstract: A novel motor controlled microvalve dispenser includes a body section through which fluid, e.g., adhesives, epoxies, fluxes solder pastes, for example, is accurately dispensed as a dot or bead or other shape, all of a predetermined dimension. The housing includes a removable and replaceable insert which prevents any of the fluid from contacting any of the interior walls of the housing or of the infeed passage. The insert includes both an infeed passage which extends out of the housing and an outlet passage also extending out of the housing, the insert including a bore into which a feed screw or auger is sealingly positioned for rotation by the motor. Attached to outlet passage is an applicator or tip dispenser such as a removable and replaceable dispensing needle.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: August 3, 1999
    Assignee: Techcon Systems, Inc.
    Inventor: Richard L. Jefferson