Grab for lifting and displacing an object between a position submerged in a hot liquid, such as metal, and a position emerged in gas
US5128095A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1991 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Feb 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S294/906
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The grab (1) comprises a tubular body (2) connected to a lifting means and a slide (3) mounted axially movably in the tubular body (2), so as to ensure the actuation of gripping pawls (20) carried by the tubular body (2). The tubular body (2) has a bell-shaped open end part (16), within which the slide (3) is connected to the inner surface of the tubular body over its entire periphery by means of an axially deformable gas-tight elastic member (30). The gripping pawls (20) are arranged within the bell-shaped end part (16) of the tubular element between the elastic member (30) ensuring its closure and its open end (16a). During the introduction of the lower part of the tubular body (2) into the liquid metal (8) in order to carry out the pick-up and displacement of an object (15), gas is trapped inside the bell (16) and forms a reserve, in which the gripping pawls (20) and their control means are located during the pick-up and displacement of the object (15) below the level (8a) of the liquid metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.