Floor-treating apparatus
Abstract
Abstract WHEELS SUPPORT A HOUSING FOR MOVEMENT ON A SURFACE TO BE TREATED. A BRUSH ROLLER IS MOUNTED IN THE HOUSING FOR TURNABLY ENGAGING THIS SURFACE. MOUNTING MEANS MOUNTS THE BRUSH ROLLER WITH FREEDOM OF ADJUSTMENT BETWEEN A LOWER AND AN UPPER POSITION WITH REFERENCE TO THE SURFACE. BIASING MEANS PERMANENTLY URGES T HE BRUSH ROLLER TO ONE OF THESE POSITIONS. A CONTROL MEMBER IS RELEASABLY COUPLED WITH OF THE HOUSING AND HAS AN OUTER MANUALLY ENGAGEABLE PORTION AND AN INNER CONTACT PORTION WHICH COOPERATES WITH THE MOUNTING MEANS. THE CONTROL MEMBER IS TURNABLE BETWEEN TWO TERMINAL SETTINGS IN ONE OF WHICH IT MOVES THE BRUSH ROLLER TO THE OTHER OF ITS POSITIONS AGAINST THE OPPOSITION OF THE BIASING MEANS. DETENT MEANS PREVENTS UNINTENTIONAL TURNING MOVEMENT OF THE CONTROL MEMBER BEYOND ITS TERMINAL SETTINGS NAD PRECLUDES AXIAL-SHIFTING OF THE CONTROL MEMBER.
Inventors
- 👤 Gunter Leifheit
- 👤 Johannes Liebscher
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |