Pumping of high viscosity materials
US4875833A · kind A · utility
5Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1987 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Feb 20, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2015/026
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vane pump in which the ports for passage of highly viscous material pumped are widely dimensioned and the clearances, in particular around the rod which carries the vane, are great. The invention applies to the pumping of materials of the type having a base of butyl rubber and/or polyisobutylene, and in general of materials exhibiting a viscosity greater than 35,000 poises.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.