Patents by Inventor Raymond B. Sims

Raymond B. Sims 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 overload circuit breaker
    Patent number: 4275370
    Abstract: An electrical overload circuit breaker utilizes as the current-responsive tripping mechanism a solenoid, the coil of which is constituted by a helical spring of shape memory effect material and which mechanically acts on the armature. There is a non-SME spring which also acts on the armature but in a direction opposing the SME spring. The current is passed through the SME spring and, when it becomes excessive, the armature is urged both mechanically and electromagnetically in a tripping direction.
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: June 23, 1981
    Assignee: Delta Materials Research Limited
    Inventor: Raymond B. Sims