Patents by Inventor William Clarence Miller

William Clarence Miller 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).

  • Lockable key
    Patent number: 7052223
    Abstract: A lockable key comprises a handle, a flange, a shaft, a first spring, a second spring, and two depressible balls. The handle is connected to the top of said flange, and the shaft is connected to the bottom of the flange. The shaft provides two lateral appendages, and he first spring is coiled around the shaft between the flange and the two lateral appendages. The shaft terminates in a tapered region that provides apertures through which the depressible balls depend. The second spring is mounted internal to the shaft and acts to push the depressible balls outwardly through the apertures.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: May 30, 2006
    Inventor: William Clarence Miller