Patents by Inventor John P. Linder

John P. Linder 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: 6000733
    Abstract: A presser bar mechanism for an exit door having a frame with a stile, upper and lower lock rods vertically sliding in the stile, a presser bar carried on the door frame, a plate mounted in the stile for rotation about a horizontal axis, upper and lower connectors each having a first end attached to the plate and each having a second end attached to said upper and lower lock rods, respectively, a drive pin carried in one of the connectors and projecting outward from the stile, a slide housing carried on the stile and including a slide channel, a slide member carried in the slide housing for translation along the slide channel, and a crank carried in the slide housing and having first and second crank arms, with the first crank arm engageable by the presser bar and with the second crank arm engagable with the slide member so that pressing on the presser bar rotates the crank to move the slide member in the slide housing, with the slide member engaging the drive pin in driving relation to translate the drive pin
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: December 14, 1999
    Assignee: International Door Closers, Inc.
    Inventor: John P. Linder
  • Patent number: 5088786
    Abstract: A panic bar mechanism for an exit door having a frame with a stile, upper and lower lock rods vertically sliding in the stile, and a panic bar carried on levers pivotally mounted on the door frame. The mechanism includes a plate mounted in the stile for rotation about a horizontal axis, upper and lower connectors each having a first end attached to the plate on opposing sides of the horizontal axis and each having a second end attached to the upper and lower lock rods, respectively, and a drive pin carried in the lower connector parallel to the horizontal axis, with one or more of the levers having an inner end directly engaging the drive pin for moving the drive pin upward and rotating the plate about the horizontal axis and moving the lock rods vertically. In the preferred embodiment, the mechanism is non-handed, with both levers capable of engaging the drive pin.
    Type: Grant
    Filed: May 21, 1991
    Date of Patent: February 18, 1992
    Assignee: International Door Closers, Inc.
    Inventor: John P. Linder