Patents by Inventor John J. Grey

John J. Grey 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).

  • Bolt-nut assembly for railroad crossing frogs
    Patent number: 5603661
    Abstract: An improved railroad frog bolt-nut assembly is disclosed. The bolt has a square head and a shank. The shank has an unthreaded portion adjacent the head and a threaded portion at its terminal end. The threaded portion is rolled to a diameter equal to the shank's unthreaded portion to produce high fastener strength. A unitary lock nut is formed with an annular boss extending from its outside end in which indentations intersecting with some of the nut threads are pressed to provide an interference, locking fit with the bolt threads.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: February 18, 1997
    Assignee: Barnes Group, Inc.
    Inventor: John J. Grey
  • Bolt-nut assembly for railroad crossing frogs
    Patent number: 5413442
    Abstract: An improved railroad frog bolt-nut assembly is disclosed. The bolt has a square head and a shank. The shank has an unthreaded portion adjacent the head and a threaded portion at its terminal end. The threaded portion is rolled to a diameter equal to the shank's unthreaded portion to produce high fastener strength. A unitary lock nut is formed with an annular boss extending from it's outside end in which indentations intersecting with some of the nut threads are pressed to provide an interference, locking fit with the bolt threads.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: May 9, 1995
    Assignee: Barnes Group, Inc.
    Inventor: John J. Grey
  • Railroad lock nut fastener
    Patent number: D367002
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: February 13, 1996
    Assignee: Barnes Group
    Inventor: John J. Grey
  • Railroad lock nut fastener
    Patent number: D367003
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: February 13, 1996
    Assignee: Barnes Group
    Inventor: John J. Grey