US3346896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet and floor-scrubbing machine
Assignee: Nilfisk Inc
•
Filing: 1965-10-22
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Granted: 1967-10-17
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Daniel A Arones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:07
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4091; A47L11/02; A47L11/10; A47L11/14; A47L11/145; A47L11/32; A47L11/325; A47L11/34; A47L11/4036; A47L11/4041; A47L11/4052; A47L11/4058; A47L11/4063; A47L11/4066; A47L11/4069; A47L11/4072; A47L11/4075; A47L11/408; A47L11/4083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A CARPET SCRUBBING MACHINE COMPRISING; (A) A FRAME HOUSING HAVING A BOTTOM WALL, SIDE WALLS, AND END WALLS, (B) A CYLINDRICAL BRUSH ROTATABLY MOUNTED ON SAID FRAME HOUSING TRANVERSELY THEREOF FOR ENGAGEMENT WITH THE CARPET (C) MEANS FOR ROTATING SAID BRUSH CONNECTED TO AND OPERATED BY (D) A MOTOR CARRIED BY SAID HOUSING, (E) GROUND-ENGAGING WHEEL MEANS MOUNTED ON THE REAR OF SAID HOUSING, (E) FRONT GROUND ENGAGING WHEELS MOUNTED ON THE REAR SAID HOUSING, (G) FRONT GROUND ENGAGING WHEELS MOUNTED ON SAID WHEEL MOUNTING MEANS, (H) A CAM ARM RIGIDLY SECURED TO SAID WHEEL MOUNTING MEANS SUBSTANTIALLY CENTRALLY THEREOF, (I) HANDLE ARM MEANS PIVOTALLY MOUNTED ON SAID MAIN HOUSING FOR GUIDING THE SAME, AND (J) LEVER MEANS CONNECTED TO SAID HANDLE ARM MEANS AND CONTACTABLE WITH SAID CAM ARM FOR CAUSING SAID CAM ARM TO PIVOT SAID WHEEL MOUNTING MEANS UPON THE PIVOTAL MOVEMENT OF SAID HANDLE ARM MEANS THEREBY MOVING SAID FRONT WHEELS RELATIVE TO SAID HOUSING AND TO SAID REAR WHEELS.
Claim 2
Dependent Claim
164 words
A CARPET SCRUBBING MACHINE COMPRISING; (A) A FRAME HOUSING HAVING A BOTTOM WALL, SIDE WALLS, AND END WALLS, (B) A CYLINDRICAL BRUSH ROTATABLY MOUNTED ON SAID FRAME HOUSING TRANVERSELY THEREOF FOR ENGAGEMENT WITH THE CARPET (C) MEANS FOR ROTATING SAID BRUSH CONNECTED TO AND OPERATED BY (D) A MOTOR CARRIED BY SAID HOUSING, (E) GROUND-ENGAGING WHEEL MEANS MOUNTED ON THE REAR OF SAID HOUSING, (E) FRONT GROUND ENGAGING WHEELS MOUNTED ON THE REAR SAID HOUSING, (G) FRONT GROUND ENGAGING WHEELS MOUNTED ON SAID WHEEL MOUNTING MEANS, (H) A CAM ARM RIGIDLY SECURED TO SAID WHEEL MOUNTING MEANS SUBSTANTIALLY CENTRALLY THEREOF, (I) HANDLE ARM MEANS PIVOTALLY MOUNTED ON SAID MAIN HOUSING FOR GUIDING THE SAME, AND (J) LEVER MEANS CONNECTED TO SAID HANDLE ARM MEANS AND CONTACTABLE WITH SAID CAM ARM FOR CAUSING SAID CAM ARM TO PIVOT SAID WHEEL MOUNTING MEANS UPON THE PIVOTAL MOVEMENT OF SAID HANDLE ARM MEANS THEREBY MOVING SAID FRONT WHEELS RELATIVE TO SAID HOUSING AND TO SAID REAR WHEELS.
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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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |