Battery powered vacuum unit
US4863593A · kind A · utility
19Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1988 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Feb 4, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B35/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Battery powered vacuum unit, useful for suction filtration of water samples in the field. The vacuum unit comprises a miniature piston type air suction pump, driven by a small direct current (DC) motor which in turn is powered by a battery or other 12 volt DC power source. The motor may be controlled by a timer. The motor has a maximum power requirement of about 75 Watts and the suction pump has the ability to produce a vacuum of at least about 12.5 mm of mercury. The entire unit is preferably self-contained in a single housing, and preferably weighs no more than about 5 kilograms (11 pounds).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.