Patents by Inventor Curtis L. Helding

Curtis L. Helding 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).

  • Door push-bar lock-out retainer
    Patent number: 4790577
    Abstract: A door push-bar lock-out retainer which includes a block for mounting onto a door and it has a flexible strap for surrounding the push-bar and holding it in the door unlatched position. The strap is adjustable to accommodate various sizes of push-bars. The block has an opening which receives one end of the strap which has a latch end which is trapped in the opening by a latch member on the block. A key is utilized for releasing the strap from the latched position to thereby release the push-bar and thereby place the door in its locked position.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: December 13, 1988
    Inventors: Curtis L. Helding, Carl R. Larrabee
  • Door push bar lock-out retainer
    Patent number: 4331354
    Abstract: A door push bar lock-out retainer for a door having a swingable push bar. A member is swingably attachable to the door and can swing above the level of the push bar and then downwardly thereon and it has a hook for retaining the push bar in the unlocked position. A pin and an elongate slot form an attachment for the member so that it can swing above the push bar even when the push bar is in its unlocked position away from the door.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: May 25, 1982
    Inventors: Curtis L. Helding, Carl R. Larrabee