Hold open arm assembly
AssigneeThe Bilco Company
InventorRobert J. Lyons, Sr.
Life of this patent
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AssigneeThe Bilco Company
InventorRobert J. Lyons, Sr.
Estimating the term…
A hold open arm assembly for a non-vertically hinged door prevents a door for a roof or floor opening from closing unexpectedly and allows one-handed operation. The assembly includes an elongated arm that bears directly against a stop aligned with the axis of the arm when a closing force, such as a wind load, is applied directly to the door. The arm has a guide that engages a guide slot in a bracket attached to the door. The guide slot is tapered and widens near the stop. When a closing force is applied to a handle connected to the arm, the guide moves parallel to the guide slot and the arm clears the stop, allowing the door to close. When the closing force is applied to the door, and not the handle, the guide moves perpendicular to the guide slot so that the arm engages the stop. The guide is provided with a low friction roller bearing for smooth operation.
A hold open arm assembly for a non-vertically hinged door comprising:
A hold open arm assembly for a non-vertically hinged door, the door being movable from an open to a closed position and being at least slightly over counterbalanced when at the open position, the hold open arm assembly comprising:
Dependencies are inferred from the claim text.