Hydrodynamic cell
Abstract
Abstract 1,124,517. Magnetic stirrers. CESKOSLOVENSKA AKADEMIE VED. 2 June, 1966 [3 June, 1965], No. 24580/66. Heading B1C. [Also in Division G1] A cell 2, Fig. 1, for making optical investigations on a liquid flowing therethrough in a direction approximately parallel to the light beam and comprising an elongated chamber 1 closed at each end by a window 3, 3<SP>1</SP>, and having inlet and outlet channels 5, 6, at opposite ends of the cell is provided with a ball 8 which is normally accommodated in a recess 9 so as to be outside of the path of the light beam but is movable by external means to stir the cell contents. The ball 8 may be of ferromagnetic material so that it may be moved by rocking a shaft 14 carrying an electromagnet or permanent magnet 11 whose polepieces closely embrace the sides of the cell which is made thinner in their vicinity. Alternatively a stationary electromagnet may be used and its pole-pieces either shaped or so placed that the ball 8 is moved against gravity when the current is switched on, the ball 8 returning under gravity due to the inclination of the cell. In further forms the cell is rocked or otherwise moved to provide movement of the ball.
Inventors
- 👤 Jiri Hrdina
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |