Appliance for cleaning floors
Abstract
Abstract A FLOOR CLEANING APPLIANCE HAS A BRUSH ROTATING ABOUT A HOLLOW VERTICAL SPINDLE AND A FEED TANK LOCATED IN A RECOVERY TANK ABOVE THE BRUSH. CLEANING FLUID FED FROM THE FEED TANK TO A CENTRAL PORTION OF THE BRUSH IS DISPERSED RADIALLY OUTWARDLY THROUGH THE BRUSH BY CENTRIFUGAL FORCE BUT IS OUTWARDLY MOVEMENT IS CHECKED BY A VERTICAL ANNULAR WALL SPACED INWARDLY FROM THE PERIPHERY OF THE BRUSH IN A PERIPHERAL PORTION OF THE BRUSH OUTSIDE THE WALL THERE ARE LIQUID-RECOVERY CAVITIES WHICH ARE CONNECTED BY PAS- SAGEWAYS WITH THE HOLLOW VERTICAL SPINDLE WHICH LEADS TO THE RECOVERY TANK. LIQUID COLLECTED IN THE CAVITIES IS CON DUCTED TO THE RECOVERY TANK BY THE EVOLUTE SHAPE OF THE CONNECTING PASSAGEWAY AND A SUCTION TURBINE IN THE RECOVERY TANK.
Inventors
- 👤 Alfred M Salzmann
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |