Patents by Inventor Jan Rijpkema

Jan Rijpkema 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: 4608006
    Abstract: A cheese press, for pressing cheese in a plurality of cheese moulds having covers through which pressure is applied to the cheese, has a tunnel with walls defining roof, floor and sides and along which the spaced-apart cheese moulds are moved by conveyor means intermittently. Mounted on the tunnel are a plurality of pressing cylinders having pressing members actuated by the respective cylinders to press said mould covers downwardly. So that the cheese press is cheap to make and maintain, and easy to clean, the tunnel walls are smooth and have no internal or external reinforcing ribs, pressing cylinders are mounted spaced-apart on the tunnel roof outside the tunnel chamber and that each cylinder is releasable and removable from its pressing member without the need for access to the interior of the chamber.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: August 26, 1986
    Assignee: Esmil Hubert B.V.
    Inventors: Jan Rijpkema, Gustaaf A. Uittenbogaart