US3286289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-brush floor polisher
Assignee: Electrolux Corp
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Filing: 1964-10-02
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Granted: 1966-11-22
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Expires: 1984-10-02
Abstract
No abstract record available.
Inventors
- 👤 Frank K Bayless
- 👤 Raymond L Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:25
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/164; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A SURFACE TREATING APPARATUS WHEREIN TWO SIDEBY-SIDE CIRCULAR BRUSHES ADPATED FOR MAKING FACIAL CONTACT WITH THE SURFACE TO BE TREATED ARE ROTATABLE IN SYNCHRONISM ABOUT THEIR VERTICAL AXIS, THE IMPROVEMENT WHEREIN EACH BRUSH INCLUDES A RING OF BRISTLES ARRANGED AT THE OUTERMOST PERIPHERAL EDGE OF SAID CIRCULAR BRUSH, SAID RING COMPRISING A PLURALITY OF SPACED-APART TUFTS OF BRISTLES, EACH SAID TUFT EXTENDING AXIALLY TO CONTACT THE SURFACE TO BE TREATED AND OUTWARDLY BEYOND THE PERIPHERY OF ITS CIRCULAR BRUSH, SAID SPACED-APART TUFTS WHEN MOVING ARCUATELY ENTERING TO A SUBSTANTIAL DEPTH INDIVIDUAL SPACES BETWEEN THE TUFTS OF THE OTHER BRUSH WITHOUT INTERFERING WITH THE ARCUATELY MOVING TUFTS OF SAID OTHER BRUSH THEREBY LEAVING NO UNTREATED SURFACE SPACE BETWEEN THE SIDE-BY-SIDE BRUSHES.
Claim 2
Dependent Claim
121 words
IN A SURFACE TREATING APPARATUS WHEREIN TWO SIDEBY-SIDE CIRCULAR BRUSHES ADPATED FOR MAKING FACIAL CONTACT WITH THE SURFACE TO BE TREATED ARE ROTATABLE IN SYNCHRONISM ABOUT THEIR VERTICAL AXIS, THE IMPROVEMENT WHEREIN EACH BRUSH INCLUDES A RING OF BRISTLES ARRANGED AT THE OUTERMOST PERIPHERAL EDGE OF SAID CIRCULAR BRUSH, SAID RING COMPRISING A PLURALITY OF SPACED-APART TUFTS OF BRISTLES, EACH SAID TUFT EXTENDING AXIALLY TO CONTACT THE SURFACE TO BE TREATED AND OUTWARDLY BEYOND THE PERIPHERY OF ITS CIRCULAR BRUSH, SAID SPACED-APART TUFTS WHEN MOVING ARCUATELY ENTERING TO A SUBSTANTIAL DEPTH INDIVIDUAL SPACES BETWEEN THE TUFTS OF THE OTHER BRUSH WITHOUT INTERFERING WITH THE ARCUATELY MOVING TUFTS OF SAID OTHER BRUSH THEREBY LEAVING NO UNTREATED SURFACE SPACE BETWEEN THE SIDE-BY-SIDE BRUSHES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |