US3246353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable carpet sweeper
Assignee: Harrisburg University of Science and Technology
•
Filing: 1964-11-23
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Granted: 1966-04-19
•
Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 Verl R Farnsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:11
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4072; A47L11/32; A47L11/33; A47L11/4036; A47L11/4041; A47L11/4052; A47L11/4058; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A CARPET SWEEPER, COMPRISING: A HOUSING; A BRUSH ROTATABLY MOUNTED IN SAID HOUSING: BRUSH DRIVING WHEELS ROTATABLY CARRIED IN SAID HOUSING AND VERTICALLY MOVABLE RELATIVE TO SAID BRUSH, SPRING MEANS FOR BIASING SAID RELATIVE VERTICAL MOVEMENT; A FIRST STOP MEMBER FIXED TO SAID HOUSING; A SECOND STOP MEMBER MOVABLE IN RESPECT TO SAID HOUSING AND COOPERATING WITH SAID FIRST STOP MEMBER TO LIMIT SAID RELATIVE VERTICAL MOVEMENT BETWEEN SAID BRUSH AND BRUSH DRIVING WHEELS IN ACCORDANCE WITH THE RELATIVE POSITION OF SAID FIRST STOP MEMBER IN RESPECT TO SAID SECOND STOP MEMBER; ADJUSTMENT MEANS TO CHANGE THE RELATIVE POSITION BETWEEN SAID FIRST AND SECOND STOP MEMBERS, SAID ADJUSTMENT MEANS COMPRISING OF A ROTATABLE MEMBER CARRIED BY SAID HOUSING AND ACTUATING MEANS FOR ROTATING SAID MEMBER, SAID ROTATABLE MEMBER HAVING
References Cited (Backward Citations)
US2793378A
Cited
US3145405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |