Patent US3572254A successfully refreshed from Google Patents.
US3572254A
Expired / Lapsed
US
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Bridge plate construction
Assignee: United States Gypsum Co
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Filing: 1968-12-16
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Granted: 1971-03-23
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Expires: 1988-12-16
Abstract
Abstract A BRIDGE PLATE ADAPTED TO SPAN THE INTERVAL BETWEEN TWO RAILWAY FLATCARS OR THE LIKE WHEN IN A LOWERED HORIZONTAL POSITION IS PIVOTALLY MOUNTED ON AN END CORNER PORTION OF EACH OF SUCH CARS. THE BRIDGE PLATE PIVOTALLY ENGAGES A HINGE PLATE WHICH IS SECURED TO A RESILIENT MOUNTING ANCHORED TO A SUPPORTING FLATCAR SURFACE. THE RESILIENT MOUNTING ENABLES THE BRIDGE PLATE AND CONNECTED HINGE PLATE TO ROTATE WHILE SUCH PLATE IS IN A HORIZONTAL LOWERED POSITION, AS WHEN THE TWO CARS NEGOTIATE A CURVED TRACK SECTION.
Inventors
- 👤 Richard E Slager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:33
CPC Classifications
B; B61; B61D; B61D3/00; B61D3/16; B61D3/18; B61D3/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |