Patent US1701974A successfully refreshed from Google Patents.
Patent US3236507A successfully refreshed from Google Patents.
US3236507A
Expired / Lapsed
US
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Skid rail
Assignee: United States Steel Corp
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Filing: 1964-04-01
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Granted: 1966-02-22
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Expires: 1984-04-01
Abstract
No abstract record available.
Inventors
- 👤 Robert T Mckie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:24
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/02; F27D3/022; F27D3/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SKID RAIL COMPRISING A CHANNEL FORMED OF A BASE AND A PAIR OF FLANGES EXTENDING UPWARDLY FROM OPPOSITE EDGES OF SAID BASE AND HAVING AN OPEN TOP BETWEEEN SAID FLANGES, A STRUCTURAL T FORMED OF A BASE WELDED NEAR ITS SIDE EDGES OF THE UPPER EDGES OF SAID FLANGES AND A STEM EXTENDING UPWARDLY FROM SAID SECOND-NAMED BASE, AND A BEAD OF HEAT AND WEAR RESISTANT ALLOY FORMED ALONG THE UPPER EDGE OF SAID STEM FOR ENGAGING WORK, THE SPACE BOUNDED BY THE FLANGES AND BASE OF SAID CHANNEL AND THE BASE OF SAID T BEING OF RECTANGULAR CROSS SECTION AND PROVIDING A PASSAGE FOR COOLING FLUID, THE BASE OF SAID CHANNEL BEING RELATIVELY WIDE TO PROVIDE A LARGE BEARING SURFACE AND PROMOTE STABILITY AGAINST LATERAL FORCES.
Claim 2
Dependent Claim
128 words
A SKID RAIL COMPRISING A CHANNEL FORMED OF A BASE AND A PAIR OF FLANGES EXTENDING UPWARDLY FROM OPPOSITE EDGES OF SAID BASE AND HAVING AN OPEN TOP BETWEEEN SAID FLANGES, A STRUCTURAL T FORMED OF A BASE WELDED NEAR ITS SIDE EDGES OF THE UPPER EDGES OF SAID FLANGES AND A STEM EXTENDING UPWARDLY FROM SAID SECOND-NAMED BASE, AND A BEAD OF HEAT AND WEAR RESISTANT ALLOY FORMED ALONG THE UPPER EDGE OF SAID STEM FOR ENGAGING WORK, THE SPACE BOUNDED BY THE FLANGES AND BASE OF SAID CHANNEL AND THE BASE OF SAID T BEING OF RECTANGULAR CROSS SECTION AND PROVIDING A PASSAGE FOR COOLING FLUID, THE BASE OF SAID CHANNEL BEING RELATIVELY WIDE TO PROVIDE A LARGE BEARING SURFACE AND PROMOTE STABILITY AGAINST LATERAL FORCES.
References Cited (Backward Citations)
US1753220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |