US3225374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beater-brush roller for vacuum cleaner
Assignee: Singer Co
•
Filing: 1963-08-26
•
Granted: 1965-12-28
•
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 07:14
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
Cited
US2268429A
Cited
US2512544A
Cited
US2578549A
Cited
US2533169A
Cited
US2712669A
Cited
US2734211A
Cited
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 |