Anode jack stop limit
US3994797A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Mar 24, 1975 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Mar 24, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/20
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Apparatus for limiting the upward movement of the anodes of a computer-controlled aluminum reduction cell is disclosed. An air motor is connected with a jack for raising or lowering the superstructure supporting the cell anodes when air pressure is admitted to the motor in response to either a computer or cell-operator-initiated pilot air signal. Computer-generated pilot air signals of a time duration which could cause the air motor to raise the superstructure and create an open anode condition, are interrupted after a predetermined time period. A ball-cam valve is positioned in a fixed relation to the anode superstructure to interrupt either a computer or cell-operator-initiated "up" anode signal to the air motor when the anode superstructure reaches a predetermined upper limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.