Mass transfer equipment
US4382901A · kind A · utility
11Cited by
10References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1982 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Aug 2, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7913
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Mass transfer equipment comprises a base (3) having at least one riser (1) with inwardly elongated sloping sides and a moveable valve cap (2) positioned above the riser (1), having outwardly and downwardly elongated sloping sides. Legs (5) extend downwardly from the valve cap (2) and posses stops which limit the movement of the valve cap (2) to such an extent that the lower edge of the sloping side of the valve cap (2) is never above the upper edge of the sloping side of the riser (1). Dimples (4) may be provided on the riser (1) to prevent sticking when the valve is closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.