公开(公告)号：US20200055708A1

公开(公告)日：2020-02-20

申请号：US16105350

申请日：2018-08-20

Applicant: OTIS ELEVATOR COMPANY

Inventor： Kevin Shepherd ,  Pieter Van Lieu

IPC: B66B17/12 ,  B66B7/02 ,  B66B15/02

Abstract: An illustrative example embodiment of an elevator counterweight includes a frameless stack of a plurality of weights that are connected to maintain a vertical and horizontal alignment of the weights. A plurality of guides are directly supported on at least some of the weights. The plurality of guides are configured to guide movement of the counterweight along elevator guide rails.

公开(公告)号：US20180170715A1

公开(公告)日：2018-06-21

申请号：US15381484

申请日：2016-12-16

Applicant: OTIS ELEVATOR COMPANY

Inventor： Kevin Shepherd ,  James O'Neal Creel, JR.

IPC: B66B9/04 ,  B66B11/04 ,  B66B1/04 ,  B66B11/00

CPC classification number: B66B5/028 ,  B66B5/0087

Abstract: An illustrative example hydraulic elevator system includes an elevator car, a hydraulic plunger associated with the elevator car, a fluid reservoir and a conduit coupling the fluid reservoir and the hydraulic plunger. A pump causes fluid movement through the conduit between the fluid reservoir and the hydraulic plunger to cause selective movement of the elevator car. A shutoff valve is associated with the conduit, the shutoff valve being between the pump and the hydraulic plunger. The shutoff valve has a closed position in which the shutoff valve prevents fluid movement between the hydraulic plunger and at least one of the reservoir and the pump to prevent movement of the elevator car. The shutoff valve has an open position in which the shutoff valve permits fluid movement between the pump and the hydraulic plunger to permit movement of the elevator car. A valve actuator operates based on pressure in at least the hydraulic plunger. The valve actuator selectively causes the shutoff valve to be in the open position or the closed position.

公开(公告)号：US11040859B2

公开(公告)日：2021-06-22

申请号：US16105350

申请日：2018-08-20

Applicant: OTIS ELEVATOR COMPANY

Inventor： Kevin Shepherd ,  Pieter Van Lieu

IPC: B66B17/12 ,  B66B7/02 ,  B66B15/02

Abstract: An illustrative example embodiment of an elevator counterweight includes a frameless stack of a plurality of weights that are connected to maintain a vertical and horizontal alignment of the weights. A plurality of guides are directly supported on at least some of the weights. The plurality of guides are configured to guide movement of the counterweight along elevator guide rails.

公开(公告)号：US10647546B2

公开(公告)日：2020-05-12

申请号：US15381484

申请日：2016-12-16

Applicant: OTIS ELEVATOR COMPANY

Inventor： Kevin Shepherd ,  James O'Neal Creel, Jr.

IPC: B66B9/04 ,  B66B5/02 ,  B66B5/00 ,  F15B13/02

Abstract: An illustrative example hydraulic elevator system includes an elevator car, a hydraulic plunger associated with the elevator car, a fluid reservoir and a conduit coupling the fluid reservoir and the hydraulic plunger. A pump causes fluid movement through the conduit between the fluid reservoir and the hydraulic plunger to cause selective movement of the elevator car. A shutoff valve is associated with the conduit, the shutoff valve being between the pump and the hydraulic plunger. The shutoff valve has a closed position in which the shutoff valve prevents fluid movement between the hydraulic plunger and at least one of the reservoir and the pump to prevent movement of the elevator car. The shutoff valve has an open position in which the shutoff valve permits fluid movement between the pump and the hydraulic plunger to permit movement of the elevator car. A valve actuator operates based on pressure in at least the hydraulic plunger. The valve actuator selectively causes the shutoff valve to be in the open position or the closed position.