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US 5,511,837 AGranted
Door block for emergency use
AssigneeE. T. Dempsey Company Inc.
InventorsEdward T. Dempsey, Kenneth B. Cooley, Jr., Kenneth E. Batty
Life of this patent
Estimating the term…
Abstract
A block generally in the form of a right, isosceles triangular prism has a hook attached to the block to extend beyond the apex of the prism so that the hook can be hung over a door hinge leaf next to the hinge barrel on the right or left side to brace the door open, the hook being attached to the block so that the hook can be retracted into the block when the door block is not in use.
Claims6
A door block comprising:
- a block which can be attached to a door hinge, the hinge having a right leaf and a left leaf, the right leaf and the left leaf being joined by a hinge barrel, the block having a right side which can contact the hinge right leaf and the block having a left side which can contact the hinge left leaf, the block having a distance and a rigidity between the block right side and the block left side sufficient to prevent the door from swinging closed thus bracing the door in open position;
- and
- a hook attached to the block, the hook being disposed so that the hook can removably hang over the hinge left leaf just next to the hinge barrel to hold the block between the hinge right leaf and the hinge left leaf, and so that the hook can removably hang over the hinge right leaf just next to the hinge barrel to hold the block between the hinge left leaf and the hinge right leaf, the hook being attached to the block so that the hook can be retracted into the block when the door block is not in use.
Dependencies are inferred from the claim text.