Patents by Inventor Charles M. G. Wallwork

Charles M. G. Wallwork 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).

  • Handling foundry materials
    Patent number: 4231414
    Abstract: In a rotatable shake-out drum designed to receive refractory moulds containing hot metal castings and to break them up, cooling water is fed to the drum in synchronization with the feeding of moulds to the drum so that the quantity of water fed into the drum varies with the rate of delivery of moulds into the drum.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: November 4, 1980
    Inventor: Charles M. G. Wallwork