Patent US3172143A successfully refreshed from Google Patents.
US3172143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for cleaning large surface areas
Assignee: YUCIS
•
Filing: 1962-10-29
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Granted: 1965-03-09
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Edward A Yucis
- 👤 John H Coon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:58
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0863; B; B03; B03C; B03C1/00; B03C1/02; B03C1/025; B03C1/031; B03C1/033; B03C1/0335; B03C1/28; B03C1/30; E01H1/14; B03C2201/00; B03C2201/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
IN A MACHINE FOR CLEARING AIRPORT RUNWAYS AND THE LIKE OF LOOSE MATERIAL, IN COMBINATION, A POWER DRIVEN SUCTION FAN, A SUCTION COMPRISING, TOP, BOTTOM AND SIDEWALL MEMBERS DEFINING AN ELONGATED HOLLOW STRUCTURE OPEN AT BOTH ENDS, MEANS CONNECTING ONE END OF SAID STRUCTURE TO THE INTAKE OF SAID FAN, SAID TOP AND BOTTOM WALL MEMBERS EACH COMPRISING OVERLAPPING METAL PLATES SECURED TO THE RESPECTIVE SIDEWALL MEMBERS, ONE OF SAID SIDEWALL MEMBERS BEING PIVOTED ADJACENT SAID ONE END OF THE STRUCTURE TO SWING TOWARD AND FROM THE OTHER SIDEWALL MEMBER FOR VARYING THE EFFECTIVE WIDTH OF THE OTHER END OF THE NOZZLE STRUCTURE.
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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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |