Method of applying particles to a surface
Abstract
Abstract FFIG-01 PARTICLES DISPENSING APPARATUS COATS ONE OR MORE SURFACES OF A WORKPIECE SUCH AS A MOVING WEB, STRIP, SHEET, PLATE OR FLAT WIRE. PARTICLES ARE FED FROM AT LEAST ONE SOURCE OVER FLUDIZED CONVEYORS TO SEPARATE PARTICLE APPLICATOR ASSOCIATED WITH EACH SURFACE TO BE COATED. EACH PARTICLE APPLICATOR INCLUDES A RECEIVER-DISPENSER HAVING A FLUDIZED BED AND CUNTER-ROTATING BRUSH ROLLS WHICH CONTINUOUSLY PICKS UP FLUDIZED PARTICLES AND DISCHARGES THEM AGAINST ONE OF THE SURFACES TO BE COATED IN A AMOUNT WHICH VARIES WITH PARTICLES LEVEL IN THE RECEIVER-DISPENSER. A SEPARATE LOAD CELL SUPPORTS EACH RECEIVER-DISPENSER AND DRIVES A LOAD INDICATOR WHICH PRODUCES WEIGHT SIGNALS THAT ARE RELATED TO PARTICLES LEVEL IN EACH RECEIVER-DISPENSER. A CONTROLLER RECEIVING THE WEIGHT SIGNALS ACTS ON THE CONVEYOR MEANS TO IDEPENDENTLY MAINTAIN A PREDETERMINED LEVEL OF PARTICLES IN EACH RECEIVER-DISPENSER. THIS PROVIDES A UNIFORM APPLICATION OF PARTICLES ON EACH SURFACE OF THE WORKPIECE TO BE COATED.
Inventors
- 👤 W Blanch
- 👤 L Meadows
- 👤 H Young
- 👤 H Wald
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |