Invisible closure system for a key ring made up of two half-shells with internal grooves consists of bolt inserted through spring and which has central bore fitting over rod to fasten projections on half shells together in central tube

摘要

The invisible closure system for a key ring made up of two half-shells (4, 9) with internal grooves (13) consists of a bolt (2) inserted through a spring (3). The bolt has a central bore which fits over a rod (8) which fastens central projections (14) on the half shells together in a central tube (6). The key chain is attached to a rod with widened end (7) which fits into an internal groove.