Centrifugally actuated governor

An assembly for controlling movement of an elevator car, comprising:

• a sheave that is configured to rotate about a sheave axis of rotation at a velocity related to a velocity of the elevator car;
• a first mass attached to the sheave at a first mass pivot point, the first mass including a proximal arm and a distal arm;
• a second mass attached to the sheave at a second mass pivot point, the second mass including a proximal arm and a distal arm;
• and
• a magnetic connection between the proximal arm of the first mass and the distal arm of the second mass that is configured to prevent pivotal movement of the first and second masses at sheave angular velocities less than a first velocity and to permit pivotal movement of the first and second masses at velocities greater than or equal to the first velocity.

An assembly for controlling movement of an elevator car, comprising:

• a sheave that is configured to rotate about a sheave axis of rotation at a velocity related to a velocity of the elevator car;
• a first mass attached to a first face of the sheave at a first mass pivot point radially spaced from the sheave axis of rotation;
• a second mass attached to the first face of the sheave at a second mass pivot point radially spaced from the sheave axis of rotation, wherein the first and second mass pivot points are positioned along a common sheave diameter at substantially equal radial distances from the sheave axis of rotation;
• a first releasable non-elastic connection between the first and second masses that is configured to prevent pivotal movement of the first and second masses at sheave angular velocities less than a first velocity and to permit pivotal movement of the first and second masses at velocities greater than or equal to the first velocity;
• a third mass attached to a second face of the sheave at a third mass pivot point radially spaced from the sheave axis of rotation;
• a fourth mass attached to the second face of the sheave at a fourth mass pivot point radially spaced from the sheave axis of rotation, wherein the third and fourth mass pivot points are positioned along a common sheave diameter at substantially equal radial distances from the sheave axis of rotation;
• and
• a second releasable non-elastic connection between the third and fourth masses that is configured to prevent pivotal movement of the third and fourth masses at sheave angular velocities less than a second velocity and to permit pivotal movement of the third and fourth masses at velocities greater than the second velocity.