Pick-resistant lock actuator

An actuator for a window lock, comprising:

• a drive member secured for pivoting about an axis;
• a pivotable actuator link having a radial portion operatively connectable to a window lock for operating a lock in response to pivoting of the actuator link;
• a bushing having an axially extending non-cylindrical central opening and an axially extending non-cylindrical outer surface, with said actuator link cooperating with one of said bushing central opening and outer surface to substantially secure said actuator link for pivoting with said bushing and said drive member cooperating with the other of said bushing central opening and outer surface to substantially secure said drive member for pivoting with said bushing while allowing said bushing to move axially relative to said drive member;
• an axially extending stop member on said bushing;
• and
• a fixed stop member axially overlapping with said bushing stop member when said bushing is in a first axial position relative to said drive member to prevent pivoting of said drive member when pivoting forces are applied to said actuator link radial portion.

An actuator for a lock, comprising:

• a fixed member defining a pivot axis and having a stop surface at least in part extending axially and radially relative to the pivot axis;
• a actuator link secured to said fixed member for pivoting about said pivot axis, said actuator link being operatively connectable to a window lock for operating a lock in response to pivoting of the actuator link;
• a stop link secured for pivoting with said actuator link, said stop link being axially movable and including a stop member axially aligned with the fixed member stop surface in a securing position and axially spaced from the fixed member stop surface in an operating position;
• means for axially biasing said stop link toward said securing position;
• a drive member pivotable about said pivot axis;
• and
• means for drivably connecting said drive member for pivoting with said stop link, said drivably connecting means including means for biasing said stop link toward said operating position in response to a drive force applied to said drive member.

An actuator for a window lock, comprising:

• a housing mountable to a window frame and defining an opening between opposite sides, one of said sides having a recessed portion therein;
• a handle pivotable about an axis within said housing opening, said handle having a central opening with sloped cam surfaces therearound;
• a cam bushing receivable in said handle central opening and having
• sloped cam surfaces engageable with said handle cam surfaces whereby pivoting of said handle relative to said cam bushing axially moves said cam bushing relative to said handle, and
• a stop tab extending from one side of said cam bushing and receivable in said housing recessed portion when said actuator is in a locking position;
• means for axially biasing said cam bushing one side toward said housing one side;
• and
• a actuator link operatively connectable to a window lock for operating a lock in response to pivoting of the actuator link, said actuator link further being pivotally connected to said cam bushing.