Patent CH84278A successfully refreshed from Google Patents.
Patent US3109349A successfully refreshed from Google Patents.
US3109349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open floor grating
Assignee: United States Steel Corp
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Filing: 1960-12-27
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Granted: 1963-11-05
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Edwin T Lorig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:04
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/42; E04C2/421; E04C2/426
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN OPEN FLOOR GRATING INSTALLED IN A TRAFFICWAY FOR SUPPORTING VEHICULAR TRAFFIC COMPRISING A PLURALITY OF ZIGZAG STEEL BARS ARRANGED ON END AND GENERALLY PARALLEL TO ONE ANOTHER WITH THEIR TRAFFIC SUPPORTING SURFACES ARRANGED AT AN ANGLE OF BETWEEN 15 AND 45* TO THE DIRECTION OF TRAVEL OF SAID TRAFFIC SO THAT NONE OF THE TRAFFIC SUPPORTING SURFACES ARE PARALLEL TO OR NORMAL TO THE DIRECTION OF TRAVEL OF SAID TRAFFIC, ALTERNATE LEGS OF ONE BAR ABUTTING OVER A SUBSTANTIAL PART OF THEIR LENGTH WITH CORRESPONDING LEGS OF THE ADJACENT BARS, SAID CORRESPONDING LEGS OF ALTERNATE BARS BEING WELDED TO OPPOSITE ENDS OF THE LEGS OF
Claim 2
Dependent Claim
106 words
AN OPEN FLOOR GRATING INSTALLED IN A TRAFFICWAY FOR SUPPORTING VEHICULAR TRAFFIC COMPRISING A PLURALITY OF ZIGZAG STEEL BARS ARRANGED ON END AND GENERALLY PARALLEL TO ONE ANOTHER WITH THEIR TRAFFIC SUPPORTING SURFACES ARRANGED AT AN ANGLE OF BETWEEN 15 AND 45* TO THE DIRECTION OF TRAVEL OF SAID TRAFFIC SO THAT NONE OF THE TRAFFIC SUPPORTING SURFACES ARE PARALLEL TO OR NORMAL TO THE DIRECTION OF TRAVEL OF SAID TRAFFIC, ALTERNATE LEGS OF ONE BAR ABUTTING OVER A SUBSTANTIAL PART OF THEIR LENGTH WITH CORRESPONDING LEGS OF THE ADJACENT BARS, SAID CORRESPONDING LEGS OF ALTERNATE BARS BEING WELDED TO OPPOSITE ENDS OF THE LEGS OF
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |