Patents by Inventor Mark A. Leonhardt

Mark A. Leonhardt 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: 4848421
    Abstract: Pouch filling apparatus having a horizontal rotatable drum, an inclined spout plate rotatably mounted above the drum and a metering wheel mounted above the spout plate. A plurality of duck bill spouts are mounted on the spout plate and a plurality of cams are mounted on the drum. The duck bill spouts carry cam followers that engage the cams as the inclined spout plate moves the spouts downwardly with respect to the drum that carries the cams.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: July 18, 1989
    Assignee: R. A. Jones & Co. Inc.
    Inventors: Richard J. Froese, Mark A. Leonhardt, Michael J. Roy
  • Patent number: 4702289
    Abstract: A web of pouches is carried around a rotating drum. Above the drum is a filler. The filler has a lower stationary plate with an arcuate slot in it. Above the stationary plate are two rotating plates which are vertically-spaced apart. The plates have aligned holes forming cups. A hopper is located above the rotating plates to pour product onto the rotating plates. A separator is located between the rotating plates and overlies the slot in the stationary plate whereby the lower primary cups are filled through the upper secondary cups and are discharged into pouches through the slot in the stationary plate while the separator holds back the product in the upper secondary cups.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: October 27, 1987
    Assignee: R. A. Jones & Co. Inc.
    Inventors: Harold T. Benner, Jr., Mark A. Leonhardt, Matthew J. Zdinak