Patents by Inventor Robert T. Jeffery

Robert T. Jeffery 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).

  • Patent number: 5626094
    Abstract: A device of any material, shape, size, texture, style, color, configuration, and orientation that is affixed, secured, or is an integral part to a staircase handguide, to a handguide support or frame, or to a sidewall. The device provides anyone, ascending or descending the stairs, with a tactile cue that indicates the pedestrian's approach to a final step in a series of steps. A pedestrian senses the tactile indicator to determine when he or she is at the last step so as to change accordingly his or her walking or motion. This safety indicator is intended for the public at large. A pedestrian without sight, with impaired or limited sight, or with compromised sight (due to power outage, light-source outage, smoke-filled stairwell, temporary blindness, etc.) can negotiate stairs with greatly increased safety, speed, and confidence.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: May 6, 1997
    Inventors: Robert T. Jeffery, Brian F. Donnelly, Robert S. Krolick
  • Patent number: D364714
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: November 28, 1995
    Assignee: LDB Automotive, Inc.
    Inventor: Robert T. Jeffery