Abstract: A door handle pull securable to a surface of a door hinged on one edge thereof, for preventing the securing of lockable items thereto, the door handle pull. The door handle pull comprises a flat door handle grip extending from the door at an acute angle with respect to the door surface and in a direction away from the door surface, the door handle grip having a width tapering from a wider width adjacent the door to a narrower width near a distal end with an edge on the hinge side of the door extending at an acute angle to vertical. The tapered width of the grip and acute angle of the grip edge resists attachment of a locking device to the grip and urges a locking device downward off of the grips as the door is opened and the locking device is tightened.

Abstract: A device for protecting door hardware which projects from a planar surface of a door from damage by a cart being moved past the door. The device is a heavy steel bar, rectangular in cross section, which is bent in a U-shape having two legs and a central planar height portion. The bend on each end between the height and the leg has two complementary acute angles to form a 90.degree. bend.

Abstract: A push door opening mechanism for use where protection from fire is sought. In operation the push handle causes a spring biased operating lever to rotate within the door opener. The operating lever pulls a bolt which allows the door to open. When the lever is in the return position, a cavity in the operating lever is positioned adjacent to a locking pin. That pin is held in the base plate and is longer than the depth of the cavity in the operating lever. The locking pin is also mechanically biased to move into the cavity. Once positioned in the cavity, the rotation of the operating lever is jammed because the locking pin is partially in the operating lever and partially held rigid in the base plate. However, during normal operation, the locking pin is retained out of the cavity by a low melting point fusible link pin. During a fire the base plate becomes hot, causing the link pin to melt which frees the locking pin.

Abstract: A door bumper having no visible screws for mounting on a wall for contact with a door knob when the door is opened. A rubber bumper is carried on a housing which is non-detachably secured to the wall by a backplate. The backplate has a flattened V shaped spring with two radially outwardly extending ends which engage a circular notch extending around the inner periphery of the housing.