Door closing device with a belt-shaped spiral spring

A door closing device, comprising:

• (a) a housing adapted to be mounted to one of a door and a door frame, said housing comprising an upper portion and a lower portion connected to said upper portion by fastening means, each of said housing portions including a vertically extending slot along an exterior surface portion thereof;
• (b) a hollow cylindrical reel rotatably disposed within said housing about a support member comprising a bushing;
• (c) a belt-shaped spiral spring being wound on said reel and comprising a first end portion and a second end portion, said first end portion comprising means for mounting said spiral spring to one of said door and said door frame, and said second end portion being fixedly attached to said reel, wherein said slots, when said housing portions are assembled, mate with each other to form a larger slot, wherein said first end portion extends outwardly through said larger slot so that when a door opening force is applied to said first end portion, an elastic force is produced for effecting the closing of said door;
• and
• (d) braking means fixedly mounted to said housing, said braking means continuously abutting an interior surface of said bushing to regulate the rotation of said reel;
• wherein said braking means comprises a plate, a plurality of balls, and a plurality of upwardly and outwardly extending strips integrally mounted along the periphery of said plate, whereby the upper ends of said strips force said balls to abut against said interior surface of said bushing positioned within the center of the rotatable reel, to thereby regulate the rotation thereof.