Patents by Inventor Willem Wiechers

Willem Wiechers 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).

  • Manufacture of curved glass sheets
    Patent number: 4755204
    Abstract: Curved glass is maufactured by supporting glass on a sag bending mould which is passed through a furnace. During initial heating of the glass on the mould, hot air is directed around the mould beneath the glass to minimize the temperature difference between the mould and the glass.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: July 5, 1988
    Assignee: Pilkington Brothers P.L.C.
    Inventors: James Boardman, Willem Wiechers
  • Method and apparatus for treatment of articles in a fluidized bed
    Patent number: 4194898
    Abstract: An article, for example a glass sheet, is treated in a gas-fluidized particulate material by advancing the article along a path leading into the gas-fluidized particulate material and extracting gas from a region of the path at a rate sufficient to pack the particulate material in that region and thereby obturate the path. An opening leading into a container for a gas-fluidized bed of particulate material may be obturated in this way. The packed state of the material obturating the opening is such that an article can pass through the opening.
    Type: Grant
    Filed: September 21, 1978
    Date of Patent: March 25, 1980
    Assignee: Pilkington Brothers Limited
    Inventors: Donald C. Wright, Brian Marsh, Willem Wiechers