US3298607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated rail joint
Assignee: Poor and Co
•
Filing: 1966-05-16
•
Granted: 1967-01-17
•
Expires: 1986-05-16
Abstract
No abstract record available.
Inventors
- 👤 Emory L Groff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:51
CPC Classifications
E; E01; E01B; E01B11/00; E01B11/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
AN INSULATED RAIL JOINT BAR ADAPTED TO FIT INTO THE FISHING PORTION OF ADJACENT RAIL ENDS, COMPRISING, A CORE HAVING BOLT HOLES, AN INNER PLATE HAVING A MIDDLE AREA ENGAGING THE CORE AND ALSO HAVING UPPER AND LOWER FLANGES EACH HAVING A PORTION INCLINED RELATIVE TO SAID MIDDLE AREA TO A DEGREE SUBSTANTIALLY EQUAL TO THE ANGLE OF THE UNDERSIDE OF THE RELATED RAIL HEADS, AN OUTER PLATE HAVING A MIDDLE AREA ENGAGING THE OUTER FACE OF THE CORE AND ALSO HAVING UPPER AND LOWER FLANGES OUTWARDLY OFFSET FROM THE SAID OUTER FACE OF THE CORE AND HAVING A CROSS-SECTIONAL PROFILE TO PROVIDE RIBS TENDING TO RESIST
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |