HANDCUFFS Russian patent published in 1997 - IPC

FIELD: special devices fitted over man's wrists for limiting freedom of action. SUBSTANCE: locking member of handcuffs is made in the form of strip having stepped end with thin and intermediate parts and smooth end located at angle to catch with possibility for longitudinal displacement within slot made in middle part of catch and also within slot made in body. Thin and intermediate parts of strip interact with slot of catch, and thin end of strip interacts with slot in body. Catch has protrusion. At opening of handcuffs, firstly thin part of strip interacts with key, then at further turning of key, protrusion of catch interacts with key. This ensures more accurate orientation of locking member of catch relative to key and simplifies handcuffs opening process because key in this case turns only in one direction for higher operating quality of handcuffs. EFFECT: high efficiency. 7 dwg