Patent ID: 6997287

Claim:
Elevator emergency stop device for an elevator cage guided on a guide rail, comprising: a wedge-shaped element movable relative to the elevator cage to effect an emergency stop of said elevator cage by frictional force by means of a contact face of a sliding part thereof being pressed against said guide rail; wherein said wedge-shaped element includes a first side and a second side, the first side including the contact face and the second side being a tapering side opposite the first side, wherein said wedge-shaped element comprises a fixed part and a movable part, the movable part including the contact face and being movable relative to the fixed part along an inclined face of the fixed part, such that a dimension of said wedge-shaped element in the direction perpendicular to said contact face is changed in accordance with braking force to maintain the braking force at a substantially constant level, and wherein said wedge-shaped element comprises a resilient element disposed between the fixed part and the movable part, the resilient element further comprising sliding elements disposed between the resilient element and the movable part and disposed between the resilient element and the fixed part.