Patents by Inventor Jan van Roostselaar

Jan van Roostselaar 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: 5440076
    Abstract: The invention relates to an apparatus for automatically weighing a bulk puct of particle-like material such as grain for example with a set weight, provided with a weighing bunker, automatic supply and discharge means for feeding the particle-like material to and from the bunker respectively, weighing means for the weighing bunker provided with a number of electromechanical load cells on a number of suspension points for detecting the weight of the weighing bunker and for giving an electrical signal which is proportional to the force exercised on the load cell and which signal is used for controlling the supply and discharge means, and in which weight-checking means are present for checking the correctness of the measured values given by the load cells (17) for the final determination of the total weight of the weighing bunker.
    Type: Grant
    Filed: January 6, 1993
    Date of Patent: August 8, 1995
    Assignee: Eerste Nederlandse Fabrlek van Weegwerktuigen Jan Molenschot BV
    Inventor: Jan van Roostselaar