US3083620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open floor grating
Assignee: United States Steel Corp
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Filing: 1958-02-27
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Granted: 1963-04-02
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Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Edwin T Lorig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:21
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/42; E04C2/421; E04C2/422; E04C2/425
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
AN OPEN FLOOR GRATING FOR SUPPORTING VEHICULAR TRAFFIC COMPRISING A PLURALITY OF SPACED GENERALLY PARALLEL BARS EXTENDING TRANSVERSELY OF THE DIRECTION OF TRAVEL OF TRAFFIC, A PLURALITY OF SPACED SUBSTANTIALLY PARALLEL SECONDARY BARS EXTENDING BETWEEN SAID PRIMARY BARS AT AN ANGLE OF BETWEEN 15 AND 45* TO THE DIRECTION OF TRAFFIC, AND TERTIARY BARS EXTENDING BETWEEN AND FASTENED TO SAID SECONDARY BARS BETWEEN SAID PRIMARY BARS IN NON-PARALLEL RELATIONSHIP WITH SAID PRIMARY BARS, THE TOPS OF SAID BARS BEING IN SUBSTANTIALLY THE SAME HORIZONTAL PLANE, ALL OF THE LOAD SUPPORTING SURFACES OF SAID GRATING BEING DISPOSED AT AN ANGLE TO THE DIRECTION OF TRAVEL OF SAID TRAFFIC AND THE MAJORITY OF SAID SURFACES BEING ARRANGED AT A NON-PERPENDICULAR ANGLE TO THE DIRECTION OF TRAVEL OF SAID TRAFFIC, SAID BARS FORMING A PLURALITY OF OPENINGS HAVING A PLURALITY OF DIFFERENT SHAPES.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |