Emergency door closing device

A combination of an entryway and an emergency closing device, said combination comprising:

• an entryway including at least one hinge member including:
• a first plate member, a second plate member, and a hinge pin, wherein said at least one hinge member is adapted to pivotally connect the entryway to a frame;
• and
• an emergency closing device, comprising:
• a base plate member;
• wherein said base plate member is adapted to connected to the entryway;
• a pivot cam member;
• wherein said pivot cam member is adapted to be connected to said hinge pin of said hinge member;
• and
• wherein said pivot cam member is adapted to be held in place against said second plate member of said hinge member of said door;
• a closing bar;
• wherein said closing bar is linearly movable and biasingly connected to said base plate member, and is adapted to be releasably held in place via a pawl member of a lever member;
• and
• wherein said closing bar includes a plurality of gear teeth each adapted to releasably retain said pawl member between any two of said plurality of gear teeth;
• a cable member;
• wherein said cable member is connected at a distal end to said pivot cam member, and is connected at a proximal end to said closing bar, such that when said door is pivoted into said open position said cable member partially wraps around said pivot cam member and pulls upon and linearly moves said closing bar;
• a first spring member;
• wherein said first spring member is connected between said base plate member and said closing bar;
• wherein said first spring member is adapted to gain potential energy when said door is moved into said open position and said cable member linearly moves said closing bar;
• wherein said first spring member is adapted to retain said potential energy when said closing bar is held in place via said pawl member of said lever member;
• and
• wherein when said closing bar is released by said pawl member of said lever member said first spring member releases said potential energy thereby linearly moving said closing bar, thereby pulling said cable member, thereby pushing, pivoting, and closing said entryway;
• a lever member;
• wherein said lever member includes a distal end, a proximal end, and a center section;
• wherein said lever member is pivotally connected to said base plate member at said distal end thereof via a pivot post;
• wherein said lever member includes a pawl member thereon that is adapted to be releasably placed and retained between any two of said plurality of gear teeth of said closing bar, and are adapted to move in and out from between said any two of said plurality of gear teeth via the pivoting motion of said lever member;
• and
• wherein said pawl member includes a cam surface on one side thereof adapted to allow said pawl member to progressively move between said plurality of gear teeth as said door is opened to thereby progressively increase said potential energy of said first spring member;
• a second spring member;
• wherein said second spring member is connected to said base plate member at a proximal end thereof, is connected to said pivot post at a middle section thereof, and is connected to said center section of said lever member at a distal end thereof, and is adapted to pivotally bias said lever member about its said distal end and thereby pivot said pawl member toward said closing bar;
• a motor member including:
• a motor;
• and
• a plunger member;
• wherein said plunger member is mechanically connected to and is linearly movable via said motor;
• wherein said motor member is connected to said base plate member, and said plunger member is connected to said proximal end of said lever member and is adapted to move said proximal end of said lever member via said motor to thereby overcome the spring force of said second spring member and pivot said lever member and move said pawl member out from in between said any two of said plurality of gear teeth of said closing bar, to thereby allow said first spring member to release said potential energy of said first spring member and thereby close the entryway;
• a fire, smoke, and emergency signal detector;
• wherein said fire, smoke, and emergency signal detector is connected to said base plate member, and is adapted to send an electric signal to said motor member when fire, smoke, or an emergency is detected, to
• thereby pivot said lever member and move said pawl member out from in between said any two of said plurality of gear teeth of said closing bar to thereby allow said first spring member to release said potential
• energy of said first spring member and thereby close said entryway;
• and
• a power source;
• wherein said power source is adapted to be located and connected within said second cut-out section of said door, is electrically connected to said motor member and said fire, smoke, and emergency signal detector via electrical wires, and is adapted to send electric power thereto.