Automatic Emergency Door Closure
First Claim
1. An automatic emergency door closer system for use with a pair of existing hinge plates associated with a door comprising:
- a hinge pin assembly insertable into a plurality of knuckles extending from the pair of hinge plates;
wherein the hinge pin assembly is movable between;
a first position in which the door is in a regular use position where it can be moved between an open position and a closed position; and
a second position in which the door is released to the closed position;
wherein the hinge pin assembly is moved from the first position to the second position in response to a signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An automatic emergency door closure is provided that can be used with an existing door by inserting a hinge pin assembly into knuckles of hinge plates associated with the existing door. The hinge pin assembly is movable between a first position where the door is held in a regular use position in which it can be opened and closed and a second position where the door is released to a closed position. This movement from the first position to the second position may be as a result of a variety of triggers, including a message transmitted from a remote location or nearby heat. The assembly may include a hinge pin body that is inserted into the knuckles, a torsion spring that is configured to rotate the hinge pin body, and an activator that can be activated by the trigger to enable rotation of the hinge pin body.
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Citations
19 Claims
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1. An automatic emergency door closer system for use with a pair of existing hinge plates associated with a door comprising:
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a hinge pin assembly insertable into a plurality of knuckles extending from the pair of hinge plates; wherein the hinge pin assembly is movable between; a first position in which the door is in a regular use position where it can be moved between an open position and a closed position; and a second position in which the door is released to the closed position; wherein the hinge pin assembly is moved from the first position to the second position in response to a signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of using an automatic door closer comprising the steps of:
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inserting an automatic door closer system comprising a hinge pin assembly into a pair of existing hinge plate knuckles associated with a door; placing the automatic door closer system in a first position where the door is held in a regular use position in which the door can be moved between an open position and a closed position; moving the automatic door closer system to a second position where a torsion spring of the automatic door closer system rotates the hinge pin assembly; and moving the door from the open position to the closed position by the hinge pin assembly. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification