Patents by Inventor Pieter R. Onnes

Pieter R. Onnes 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).

  • Method and apparatus for separating granulate from a viscous suspension
    Patent number: 4915850
    Abstract: Method and apparatus for separating and recovering a granulate from a viscous suspension containing the graulate. The suspension is placed in a layer on an endless sieve belt guided around return rollers and effecting a separation into a sieve residue of the granulate which remains behind on the belt, and a stream of material passing through the belt. The stream of material is collected between the forward and backward runs of the sieve conveyor belt. The separated granulate is dumped from the conveyor belt. As the layer of the granulate containing suspension is dispensed on the sieve conveyor belt, at least one free edge extending across the sieve conveyor belt is formed and maintained. A stream of air passes downwardly through the sieve conveyor belt.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: April 10, 1990
    Assignee: Mudcleaning Services Amsterdam B.V.
    Inventor: Pieter R. Onnes