Patent · US Expired

Hatch cover crane

US4238036A · kind A · utility

2Cited by

6References

11Claims

0Family size

Assignee

Marine Travelift, Inc. · US

Inventors

Gerald P. Lamer · Sturgeon Bay, US
Arnold Petersen · Sturgeon Bay, US
Norbert Lenius · Sturgeon Bay, US

Key dates

Filing date	Oct 23, 1978
Grant date	Dec 9, 1980
Priority date	—
Expiry date	Oct 23, 1998

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB66C19/00
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A hatch cover crane having a hydraulically actuated jack assembly for realigning a hatch cover carried by the hatch cover crane with a ship's cargo hold opening. The jack is extended downward onto one of a pair of support rails, over which the hatch cover crane is moved, to raise one end of the hatch cover crane off the rails. While one end of the crane is raised off the rails, an opposite end is freely driven to facilitate alignment of the hatch cover carried by the hatch cover crane with the cargo hold opening.

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