Patents by Inventor Kenneth Horace Strawson

Kenneth Horace Strawson 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).

  • Electrical safety control device for a variable radius crane
    Patent number: 3990584
    Abstract: A safety device for a crane including means for continuously comparing an actual load carried by a lifting hook with an indicated maximum safe working load for that particular working radius.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: November 9, 1976
    Assignees: Strawson Hydraulics (Consultants) Limited, Wharncliffe Fabricators & Engineers Limited
    Inventors: Kenneth Horace Strawson, Keith Thomas Salvin, David Silvester Lane
  • Method of making permanent magnets
    Patent number: 3989777
    Abstract: The production of permanent magnets by a method including the injection of a slurry of magnetic material into a fixed capacity mould from which excess water can escape through a filter, the injection of the slurry being effected at a pressure sufficient to achieve the required density of finished compact.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: November 2, 1976
    Assignees: Strawson Hydraulics (Consultants) Limited, Balfour Darwins Limited
    Inventors: Kenneth Horace Strawson, Anthony Foden