Patents by Inventor Crawford S. Askew

Crawford S. Askew 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).

  • Braking device for a motor
    Patent number: 4130188
    Abstract: An improved braking device for an electric motor incorporating a solenoid operated valve which meters air or fluid flow to a diaphragm, operable and effective to cause movement of a brake ring into and out of braking engagement with a companionate brake disc on a motor shaft.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: December 19, 1978
    Inventor: Crawford S. Askew