Importance

Loading Importance Indicators...

Abstract

A lock of the disconnectable rotor type comprises a rotor rotatable in a stator sleeve rotatable in a fixed lock case. Locking means (e.g. pairs of pins or pallets) cooperate with rotor and stator sleeve to couple them together for simultaneous rotation in the absence of a correct key while freeing the rotor from the stator sleeve when the correct key is introduced. The stator sleeve is maintained in a normal or 'rest' position by an effaceable indexing member. The indexing member cooperates with the lock case to maintain the stator sleeve in its said position. A lock bolt actuating lever is coupled to the rotor by coupling means such as to effect this coupling only after rotation of the rotor independently of the stator sleeve. The coupling means include a slide ring rotatable with the rotor, cooperating with the stator sleeve through camming means to slide the slide ring axially, and including at least one actuating finger. After the slide ring has thus moved axially, the fingers enter holes in the bolt actuating lever, the slide ring being biassed towards the rotor by means of a return spring. If any attempt is made to force the lock by rotation of the rotor, the stator sleeve rotates with the rotor because of the locking pins, and the slide ring is then not displaced axially since the sleeve cannot rotate. The finger then cannot operate the bolt lever.

Loading the Abstract Image...

First Claim