US3396423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for treating large area surfaces
Assignee: Individual
•
Filing: 1965-02-09
•
Granted: 1968-08-13
•
Expires: 1985-02-09
Abstract
No abstract record available.
Inventors
- 👤 Hope Leiv
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/02; B24C3/06; B24C3/062; B05; B05C; B05C1/00; B05C1/04; B05C1/08; B05C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
AN APPARATUS FOR TREATING SURFACES OF LARGE AREA WHICH COMPRISES SUSPENSION MEANS ADAPTED FOR MOUNTING ADJACENT A SURFACE TO BE TREATED, MEANS FOR PRODUCING A CURRENT OF AIR AWAY FROM THE SURFACE AND HAVING AN AIR INTAKE ADAPTED TO BE ARRANGED IN CLOSE PROXIMITY THERETO, AND MEANS TREATING THE SURFACE BY MAKING POSIDUCING MEANS FOR TREATING THE SURFACE BY MAKING POSITIVE CONTACT THEREWITH, SAID SUSPENSION MEANS SUPPORTING SAID AIR CURRENT-PRODUCING MEANS AND SAID SURFACE-TREATING MEANS AND COMPRISING HORIZONTAL RAIL MEANS, YOKE MEANS MOVABLE ON SAID RAIL MEANS, MOVABLE SUSPENSION MEANS CONNECTING SAID YOKE MEANS WITH SAID AIR CURRENT PRODUCING MEANS FOR RELATIVE VERTICAL MOVEMENT, TUBULAR GUIDE MEANS PIVOTALLY MOUNTED ON SAID YOKE MEANS, AN ELONGATED MEMBER SECURED AT ITS LOWER END TO SAID AIR CURRENT PRODUCING MEANS WITH AN UPPER PORTION THEREOF SLIDABLY MOUNTED IN SAID GUIDE MEANS, WHEREBY SAID AIR CURRENT PRODUCING MEANS MAY BE MOVED HORIZONTALLY, VERTICALLY AND TOWARD AND AWAY FROM SAID SURFACE; THE ARRANGEMENT BEING SUCH THAT A FORCE OF REACTION RESULTING FROM THE CURRENT OF AIR IS SUPPLEMENTED BY A SUCTION FORCE ARISING FROM THE DISPOSITION OF THE INTAKE WHEREBY THE COMBINED FORCES ARE ABLE JOINTLY TO URGE THE AIR CURRENT-PRODUCING MEANS AND THE SURFACE-TREATING MEANS AGAINST THE SURFACE TO BE TREATED, WHILE THE SUCTION FORCE ENABLES RELATIVELY LOOSE MATTER TO BE REMOVED FROM SAID SURFACE.
Claim 2
Independent Claim
221 words
AN APPARATUS FOR TREATING SURFACES OF LARGE AREA WHICH COMPRISES SUSPENSION MEANS ADAPTED FOR MOUNTING ADJACENT A SURFACE TO BE TREATED, MEANS FOR PRODUCING A CURRENT OF AIR AWAY FROM THE SURFACE AND HAVING AN AIR INTAKE ADAPTED TO BE ARRANGED IN CLOSE PROXIMITY THERETO, AND MEANS TREATING THE SURFACE BY MAKING POSIDUCING MEANS FOR TREATING THE SURFACE BY MAKING POSITIVE CONTACT THEREWITH, SAID SUSPENSION MEANS SUPPORTING SAID AIR CURRENT-PRODUCING MEANS AND SAID SURFACE-TREATING MEANS AND COMPRISING HORIZONTAL RAIL MEANS, YOKE MEANS MOVABLE ON SAID RAIL MEANS, MOVABLE SUSPENSION MEANS CONNECTING SAID YOKE MEANS WITH SAID AIR CURRENT PRODUCING MEANS FOR RELATIVE VERTICAL MOVEMENT, TUBULAR GUIDE MEANS PIVOTALLY MOUNTED ON SAID YOKE MEANS, AN ELONGATED MEMBER SECURED AT ITS LOWER END TO SAID AIR CURRENT PRODUCING MEANS WITH AN UPPER PORTION THEREOF SLIDABLY MOUNTED IN SAID GUIDE MEANS, WHEREBY SAID AIR CURRENT PRODUCING MEANS MAY BE MOVED HORIZONTALLY, VERTICALLY AND TOWARD AND AWAY FROM SAID SURFACE; THE ARRANGEMENT BEING SUCH THAT A FORCE OF REACTION RESULTING FROM THE CURRENT OF AIR IS SUPPLEMENTED BY A SUCTION FORCE ARISING FROM THE DISPOSITION OF THE INTAKE WHEREBY THE COMBINED FORCES ARE ABLE JOINTLY TO URGE THE AIR CURRENT-PRODUCING MEANS AND THE SURFACE-TREATING MEANS AGAINST THE SURFACE TO BE TREATED, WHILE THE SUCTION FORCE ENABLES RELATIVELY LOOSE MATTER TO BE REMOVED FROM SAID SURFACE.
References Cited (Backward Citations)
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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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |