Patent · US Active

Lifting hook device

US8496279B2 · kind B2 · utility

24Cited by
6References
5Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJun 22, 2009
Grant dateJul 30, 2013
Priority date—
Expiry dateJun 22, 2029

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB66C1/34
  • WIPO fieldHandling
  • WIPO sectorMechanical engineering

Abstract

A lifting hook device includes a fixed hook for lifting disposed at a head section of a hollow body having an inside maintained airtight, and a rotatable hook for suspending a load, the rotatable hook has a shaft section rotatably supported in the body and vertically suspended from a bottom section, a motor for rotating the shaft section of the rotatable book about the axis of the shaft section through a rotating mechanism, an azimuth sensor mounted to the rotatable hook and detecting the rotational azimuth of the rotatable hook, and a control section for controlling rotation of the motor to restrict the orientation of the rotatable hook to a predetermined direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.