Patent US3225374A successfully refreshed from Google Patents.
US3225374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beater-brush roller for vacuum cleaner
Assignee: Singer Co
•
Filing: 1963-08-26
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Granted: 1965-12-28
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Horace S Daley
- 👤 Ronald R Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:28
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0455; A47L11/00; A47L11/02; A47L11/10; A47L11/14; A47L11/18; A47L11/19; A47L11/40; A47L11/4036; A47L11/4041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A BEATER-BRUSH ROLLER FOR USE IN THE MOUTH OF A VACUUM CLEANER, SAID ROLLER COMPRISING A UNITARY CYLINDRICAL MEMBER HAVING A PAIR OF SPACED-APART LONGITUDINALLY EXTENDING IDENTICAL UNDERCUT HELICAL SLOTS EACH HAVING OUTWARDLY CONVERGENT SIDEWALLS, SAID SLOTS BEING FORMED DIRECTLY IN SAID UNITARY CYLINDRICAL MEMBER AND EXTENDING FOR A MAJOR PORTION OF THE LENGTH THEREOF; A BALANCING STRIP FREELY INSERTABLE ENDWISE INTO ONE OF SAID SLOTS AND HELD IN THE INNER PORTION OF SAID SLOT BY SAID OUTWARDLY CONVERGENT SIDEWALLS; A BEATER INSERT INSTALLED IN THE OTHER OF SAID SLOTS; AND A BRUSH INSERT INSTALLED IN THE SLOT WITH SAID BALANCING STRIP.
Claim 2
Dependent Claim
102 words
A BEATER-BRUSH ROLLER FOR USE IN THE MOUTH OF A VACUUM CLEANER, SAID ROLLER COMPRISING A UNITARY CYLINDRICAL MEMBER HAVING A PAIR OF SPACED-APART LONGITUDINALLY EXTENDING IDENTICAL UNDERCUT HELICAL SLOTS EACH HAVING OUTWARDLY CONVERGENT SIDEWALLS, SAID SLOTS BEING FORMED DIRECTLY IN SAID UNITARY CYLINDRICAL MEMBER AND EXTENDING FOR A MAJOR PORTION OF THE LENGTH THEREOF; A BALANCING STRIP FREELY INSERTABLE ENDWISE INTO ONE OF SAID SLOTS AND HELD IN THE INNER PORTION OF SAID SLOT BY SAID OUTWARDLY CONVERGENT SIDEWALLS; A BEATER INSERT INSTALLED IN THE OTHER OF SAID SLOTS; AND A BRUSH INSERT INSTALLED IN THE SLOT WITH SAID BALANCING STRIP.
References Cited (Backward Citations)
US2045270A
Cited
US2271545A
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US2268429A
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US2512544A
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US2578549A
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US2533169A
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US2712669A
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US2734211A
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FR1187233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |