US3074090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor scraper
Assignee: Frederick Meiswinkel Inc
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Filing: 1960-08-11
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Granted: 1963-01-22
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Expires: 1980-08-11
Abstract
No abstract record available.
Inventors
- 👤 George A Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:53
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4052; A47L11/4058; A47L11/4091; E; E01; E01H; E01H1/00; E01H1/10; E01H1/105; E04; E04G; E04G23/00; E04G23/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A FLOOR WORKING TOOL OF THE TYPE HAVING A MOBILE CARRIAGE, A PAIR OF ARMS EXTENDING FORWARDLY FROM SAID CARRIAGE, POWER MEANS MOUNTED ON SAID CARRIAGE FOR RECIPROCATING SAID ARMS, AND A WORK BLADE MOUNTED ON THE END OF SAID ARMS THE IMPROVEMENT COMPRISING A PAIR OF WHEELS SUPPORTING SAID CARRIAGE, SAID WHEELS BEING PIVOTALLY MOUNTED TO SAID CARRIAGE APPROXIMATE THE CENTER OF GRAVITY OF SAID CARRIAGE, AND HANDLE MEANS MOUNTED AT THE REAR END OF SAID CARRIAGE WHEREBY SAID CARRIAGE CAN BE PIVOTED ABOUT SAID WHEELS AT SELECTED ELEVATIONS TO MANUALLY CONTROL THE PRESSURE OF SAID BLADE AGAINST A WORK SURFACE.
Claim 2
Dependent Claim
102 words
A FLOOR WORKING TOOL OF THE TYPE HAVING A MOBILE CARRIAGE, A PAIR OF ARMS EXTENDING FORWARDLY FROM SAID CARRIAGE, POWER MEANS MOUNTED ON SAID CARRIAGE FOR RECIPROCATING SAID ARMS, AND A WORK BLADE MOUNTED ON THE END OF SAID ARMS THE IMPROVEMENT COMPRISING A PAIR OF WHEELS SUPPORTING SAID CARRIAGE, SAID WHEELS BEING PIVOTALLY MOUNTED TO SAID CARRIAGE APPROXIMATE THE CENTER OF GRAVITY OF SAID CARRIAGE, AND HANDLE MEANS MOUNTED AT THE REAR END OF SAID CARRIAGE WHEREBY SAID CARRIAGE CAN BE PIVOTED ABOUT SAID WHEELS AT SELECTED ELEVATIONS TO MANUALLY CONTROL THE PRESSURE OF SAID BLADE AGAINST A WORK SURFACE.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |