公开(公告)号：US11247879B2

公开(公告)日：2022-02-15

申请号：US15743670

申请日：2016-06-28

Applicant: MHWIRTH AS

Inventor： Eivind Gimming Stensland

IPC: B66D1/14 ,  B66D1/52 ,  B66D1/08 ,  B66D1/12 ,  B66D1/18

Abstract: A winch system for driving an output includes a gear connected to the output, an electric motor connected to the gear, and a hydraulic motor connected to the gear. The electric motor and the hydraulic motor are distribute energy via the gear to the output.

公开(公告)号：US20190112881A1

公开(公告)日：2019-04-18

申请号：US15766004

申请日：2016-10-06

Applicant: MHWIRTH AS

Inventor： TORD ASLAK ASLAKSEN ,  Eivind Gimming Stensland ,  Nicolai Nilsen ,  Per Inge Roensberg

IPC: E21B19/00

Abstract: A hoisting system includes a hoisting tower, a yoke which is movable relative to the hoisting tower and which carries a tool, a first winch, a second winch, a first sheave arranged in a top section of the hoisting tower, a second sheave arranged in the top section of the hoisting tower, a first hoisting member arranged to extend from the first winch to the yoke via the first sheave, a second hoisting member arranged to extend from the second winch to the yoke via the second sheave, and at least one first releasable connector which selectively connects the second hoisting member to the yoke.