Patent ID: 11912538
Assignee: OTIS ELEVATOR COMPANY
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 2:
3. An elevator system comprising:
a hoistway (103);
an elevator car (101) and/or a counterweight (109) arranged to move within the hoistway (103);
a buffer device (121) including:
a first contact structure (501) and a second contact structure (503);
wherein the first contact structure (501) comprises a first contact surface (505);
wherein the second contact structure (503) comprises a second contact surface (507);
wherein the first contact surface (505) and the second contact surface (507) are arranged for contacting respective vertically offset surfaces of an elevator car (101) or counterweight (109);
wherein the buffer device (121) is positioned at a bottom of the hoistway beneath the elevator car (101) and/or the counterweight (109);
wherein the elevator car (101) and/or counterweight (109) comprises a first buffer strike surface (401) and a second buffer strike surface (403);
wherein the first buffer strike surface (401) is arranged to contact the first contact surface (505) of the buffer device (121), and wherein the second buffer strike surface (403) is arranged to contact the second contact surface (507) of the buffer device (121);
wherein the first buffer strike surface (401) comprises a cross-beam of the frame and the second buffer strike surface (403) comprises a safety plank of the frame.