Patent ID: 11891276
Assignee: OTIS ELEVATOR COMPANY
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. A safety device for an elevator system, wherein the elevator system comprises a guide rope arranged in a hoistway to be used as a guide rail and a running device running along the guide rope, and the safety device comprises:
a body, which is connected to the running device; and
a first component and a second component which are provided on the body and define a passage for the guide rope to pass through freely when the running device is in normal operation, the first and second components are configured for clamping the guide rope in the passage when a running speed of the running device exceeds a threshold, to restrict the speed of the running device or stop the running device;
wherein the first and second components are arranged opposite to each other to define the passage, and when the running speed of the running device exceeds the threshold, a relative movement between the first and second components occurs so that the internal gap distance of the passage becomes smaller, until the first and second components contact the guide rope and clamp it in the passage;
wherein both the first component and the second component are configured to move horizontally and vertically relative to the body;
wherein the corresponding portions of the first component and/or the second component defining the passage are configured to have a non-planar profile.