Patents by Inventor David F. C. Crawley

David F. C. Crawley 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).

  • Weighing device
    Patent number: 3991841
    Abstract: A device suitable for weighing tablets, during manufacture, comprises a ring whose deflection is proportioned to a normal stress applied to it. The deflection may be measured by a suitable transducer, such as a linear differential transformer. Sideways flexing of the ring is prevented by cantilevers connected to the ring perpendicular to its plane.
    Type: Grant
    Filed: June 18, 1975
    Date of Patent: November 16, 1976
    Assignee: The Boots Company Limited
    Inventor: David F. C. Crawley