Underwater welding
US3973712A · kind A · utility
7Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1974 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Oct 16, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0061
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Underwater welding apparatus including a welding chamber and at least one source of gas under pressure connected to the welding chamber through a demand valve, in which the demand valve allows the flow of gas to the chamber to increase as the increase in the hydrostatic head causes the pressure of the gas in the chamber to increase, and to decrease as the hydrostatic head decreases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.