US2964419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing anti-skid tread plate
Assignee: United States Steel Corp
•
Filing: 1958-03-27
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Granted: 1960-12-13
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Expires: 1978-03-27
Abstract
No abstract record available.
Inventors
- 👤 Harold S Link
- 👤 William H Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:44
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/02; C; C23; C23C; C23C2/00; C23C2/26; C23C2/265; B05D2350/00; B05D2350/60; B05D2350/65
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
AN APPARATUS FOR APPLYING AN ANTI-SKID TREAD SURFACE TO STRIP OF SHEET METAL COMPRISING THE COMBINATION WITH A METAL COATING APPARATUS INCLUDING A POT CONTAINING MOLTEN COATING METAL AND MEANS FOR GUIDING THE MOVEMENT OF SAID STRIP THROUGH SAID POT AND FOR WITHDRAWING IT FROM THE MOLTEN METAL THEREIN ALONG A SUBSTANTIALLY VERTICAL PATH TO APPLY A BONDED COVERING OF SAID COATING METAL THERETO, OF AN ABRASIVE SUPPLY HOPPER EXTENDING TRANSVERSELY OF THE PATH OF STRIP MOVEMENT, A PLURALITY OF LATERALLY SPACED AND PARALLEL ABRASIVE PROJECTING TUBES RESPECTIVELY ARRANGED WITH THEIR AXES DIRECTED AT POINTS ON THE SURFACE OF SAID BATH WHICH COINCIDE WITH THE LINE ALONG WHICH THE STRIP IS REMOVED THEREFROM, MEANS INCLUDING A CONDUIT CONNECTED WITH EACH OF SAID PROJECTING TUBES FOR FORCING A STREAM OF GAS THERETHROUGH, AND MEANS INCLUDING A SUPPLY TUBE CONNECTING EACH OF SAID PROJECTING TUBES WITH SAID HOPPER FOR ENTRAINING ABRASIVE PARTICLES IN THE GAS STREAM FLOWING THERETHROUGH.
Claim 2
Independent Claim
156 words
AN APPARATUS FOR APPLYING AN ANTI-SKID TREAD SURFACE TO STRIP OF SHEET METAL COMPRISING THE COMBINATION WITH A METAL COATING APPARATUS INCLUDING A POT CONTAINING MOLTEN COATING METAL AND MEANS FOR GUIDING THE MOVEMENT OF SAID STRIP THROUGH SAID POT AND FOR WITHDRAWING IT FROM THE MOLTEN METAL THEREIN ALONG A SUBSTANTIALLY VERTICAL PATH TO APPLY A BONDED COVERING OF SAID COATING METAL THERETO, OF AN ABRASIVE SUPPLY HOPPER EXTENDING TRANSVERSELY OF THE PATH OF STRIP MOVEMENT, A PLURALITY OF LATERALLY SPACED AND PARALLEL ABRASIVE PROJECTING TUBES RESPECTIVELY ARRANGED WITH THEIR AXES DIRECTED AT POINTS ON THE SURFACE OF SAID BATH WHICH COINCIDE WITH THE LINE ALONG WHICH THE STRIP IS REMOVED THEREFROM, MEANS INCLUDING A CONDUIT CONNECTED WITH EACH OF SAID PROJECTING TUBES FOR FORCING A STREAM OF GAS THERETHROUGH, AND MEANS INCLUDING A SUPPLY TUBE CONNECTING EACH OF SAID PROJECTING TUBES WITH SAID HOPPER FOR ENTRAINING ABRASIVE PARTICLES IN THE GAS STREAM FLOWING THERETHROUGH.
Claim 3
Dependent Claim
125 words
A PROCESS FOR PRODUCING AN ANTI-SKID TREAD PLATE WHICH COMPRISES IMMERSING A BASE STRUCTURE IN A BATH OF MOLTEN COATING METAL, WITHDRAWING SAID STRUCTURE FROM SAID BATH IN A SUBSTANTIALLY VERTICAL DIRECTION TO PROVIDE A COATING OF SAID COATING METAL THEREON, DIRECTING A BLAST OF COOLING GAS AGAINST SAID COATING AS IT EMERGES FROM SAID BATH TO THEREBY REDUCE DRAINAGE AND INCREASE ITS THICKNESS, SAID COOLING GAS BLAST BEING APPLIED AT AN ACUTE ANGLE WITH RESPECT TO THE SURFACE OF SAID BATH AND AT THE POINT ON SAID SURFACE WHERE SAID BASE STRUCTURE IS REMOVED THEREFROM, AND ENTRAINING ABRASIVE PARTICLES IN SAID BLAST FOR PROJECTION THEREBY AGAINST SAID COATING WITH A FORCE SUFFICIENT TO AT LEAST PARTIALLY EMBED AND ANCHOR SAID PARTICLES IN SAID COATING.
Claim 4
Dependent Claim
125 words
A PROCESS FOR PRODUCING AN ANTI-SKID TREAD PLATE WHICH COMPRISES IMMERSING A BASE STRUCTURE IN A BATH OF MOLTEN COATING METAL, WITHDRAWING SAID STRUCTURE FROM SAID BATH IN A SUBSTANTIALLY VERTICAL DIRECTION TO PROVIDE A COATING OF SAID COATING METAL THEREON, DIRECTING A BLAST OF COOLING GAS AGAINST SAID COATING AS IT EMERGES FROM SAID BATH TO THEREBY REDUCE DRAINAGE AND INCREASE ITS THICKNESS, SAID COOLING GAS BLAST BEING APPLIED AT AN ACUTE ANGLE WITH RESPECT TO THE SURFACE OF SAID BATH AND AT THE POINT ON SAID SURFACE WHERE SAID BASE STRUCTURE IS REMOVED THEREFROM, AND ENTRAINING ABRASIVE PARTICLES IN SAID BLAST FOR PROJECTION THEREBY AGAINST SAID COATING WITH A FORCE SUFFICIENT TO AT LEAST PARTIALLY EMBED AND ANCHOR SAID PARTICLES IN SAID COATING.
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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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |