Bouyant hanger unit for dental film chip

A bouyant dental film chip hanger unit comprising:

• an elongated molded plastic body having opposite generally flat faces and having a clip formed on the bottom end thereof;
• said body having one of said faces provided with a circular projection thereon and the other of said faces provided with a circular recess thereon having the same axis as the circular projection;
• said circular projection and said circular recess having compatible outer diameters and cross sections whereby the circular projection on the face of one hanger unit can be engaged in the circular recess on the opposite face of another hanger unit to hold said hanger units together in a face-to-face relationship;
• wherein said clip includes;
• a central tab depending from the bottom of one face of said body and having an angular stop on the interior surface thereof;
• and
• a pair of spaced side tabs depending from the bottom of the opposite face of said body and having protuberances on the interior surfaces thereof;
• said projecting stop and said protuberances lying in substantially the same plane thereby providing for holding a film chip by its upper edge in a plane parallel to the plane of said body.

A bouyant dental film chip hanger unit comprising:

• an elongated molded plastic body having opposite generally flat faces with a handle portion on the upper end thereof and a clip on the bottom end thereof for holding a film chip by its upper edge;
• said body having one face thereof provided with a circular projection and the opposite face thereof provided with a circular recess having the same axis as the circular projection;
• said handle portion having one face thereof flush with said one face of the body and the opposite face thereof set back from the plane of said opposite face of said body and extending downwardly into said circular recess by way of an opening providing shoulders on the upper sides of said circular recess, said shoulders being chamfered generally inwardly toward the axis of said circular recess;
• said circular projection and said circular recess having compatible outer diameters and cross sections whereby the circular projection on the face of one hanger unit can be snapped through the opening provided by the inwardly chamfered shoulders on the upper sides of the circular recess on the opposite face of another hanger unit and seated therein to hold said hanger units together in a face-to-face relationship.