Patents by Inventor Bobby Ray Lack

Bobby Ray Lack 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).

  • Condition indicating hard hat
    Patent number: 5915539
    Abstract: A hard hat including a rigid shell with a channel therein. A plate is secured to the shell so as to cover one of the ends of the channel. A colored indicator is affixed within the channel at the end thereof not covered by the plate. The shutter of a movable slide is positioned within the channel. The shutter can be selectively moved from a retracted position beneath the plate wherein the colored indicator is observable to an extended position wherein the colored indicator is covered by the shutter and is not observable.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: June 29, 1999
    Inventor: Bobby Ray Lack