Patent US3156168A successfully refreshed from Google Patents.
US3156168A
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US
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Grating
Assignee: Reliance Steel Products Co
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Filing: 1960-04-21
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Granted: 1964-11-10
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Expires: 1980-04-21
Abstract
No abstract record available.
Inventors
- 👤 Harry S Nagin
- 👤 Nagin Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:22
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/12; E01D19/125; E04; E04C; E04C2/00; E04C2/30; E04C2/42; E04C2/421; E04C2/422; E04C2/423; E01D2101/00; E01D2101/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A GRATING HAVING TWO SETS OF SPACED PARALLEL BARS, THE BARS OF ONE SET EXTENDING CROSSWISE OF THE OTHER WITH THE BARS OF ONE SET EXTENDING THROUGH THE BARS OF THE OTHER, AND STRIP-LIKE CLIPS SET ASTRADDLE THE BARS OF ONE SET ONLY AND EXTENDING ABOVE THE TOP SURFACE OF THE GRATING, SAID STRIP-LIKE CLIPS HAVING A LONGITUDINAL CHANNEL IN THE TOP THEREOF AND DEPENDING SIDES BELOW THE CHANNEL, AND A FILLING OF ABRASIVE GRAINS AND RESIN IN THE CHANNELS OF SAID STRIPS WITH THE RESIN BONDING THE GRAINS TO EACH OTHER AND TO THE INTERIOR OF THE CHANNELS AND FORMING A TREAD SURFACE ON THE GRATING AND MEANS SECURING THE DEPENDING SIDES OF THE STRIPS TO THE BARS ON WHICH THEY ARE SET.
Claim 2
Dependent Claim
124 words
A GRATING HAVING TWO SETS OF SPACED PARALLEL BARS, THE BARS OF ONE SET EXTENDING CROSSWISE OF THE OTHER WITH THE BARS OF ONE SET EXTENDING THROUGH THE BARS OF THE OTHER, AND STRIP-LIKE CLIPS SET ASTRADDLE THE BARS OF ONE SET ONLY AND EXTENDING ABOVE THE TOP SURFACE OF THE GRATING, SAID STRIP-LIKE CLIPS HAVING A LONGITUDINAL CHANNEL IN THE TOP THEREOF AND DEPENDING SIDES BELOW THE CHANNEL, AND A FILLING OF ABRASIVE GRAINS AND RESIN IN THE CHANNELS OF SAID STRIPS WITH THE RESIN BONDING THE GRAINS TO EACH OTHER AND TO THE INTERIOR OF THE CHANNELS AND FORMING A TREAD SURFACE ON THE GRATING AND MEANS SECURING THE DEPENDING SIDES OF THE STRIPS TO THE BARS ON WHICH THEY ARE SET.
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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |