US3289940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic railway tie
Assignee: Poor and Co
•
Filing: 1965-09-10
•
Granted: 1966-12-06
•
Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Emory L Groff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:13
CPC Classifications
E; E01; E01B; E01B3/00; E01B3/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PRE-PLATED TIE FOR EMBEDMENT IN THE BALLAST OF A TRACK-BED FOR RAILS, COMPRISING, A HOMOGENIOUS ELONGATED MONOLITHIC BODY OF SYNTHETIC RESINOUS MATERIAL CAPABLE OF BEING MOLDED AND HAVING AN UPPER RAIL SUPPORTING FACE IMPERVIOUS TO FLUIDS AND DUST AND ADAPTED TO SUPPORT THE BASE PORTIONS OF RAILWAY RAILS WEIGHING IN THE RANGE OF 75# TO 165# PER YARD, AND A METAL TIE PLATE HAVING VERTICALLY EXTENDING OPENINGS FILLED WITH THE MATERIAL OF THE TIE DURING MOLDING OF THE TIE TO SECURE THE PLATE AGAINST MOVEMENT IN BOTH HORIZONTAL AND LONGITUDINAL DIRECTIONS IN RELATION TO THE EXPOSED SURFACE OF THE TIE.
Claim 2
Dependent Claim
101 words
A PRE-PLATED TIE FOR EMBEDMENT IN THE BALLAST OF A TRACK-BED FOR RAILS, COMPRISING, A HOMOGENIOUS ELONGATED MONOLITHIC BODY OF SYNTHETIC RESINOUS MATERIAL CAPABLE OF BEING MOLDED AND HAVING AN UPPER RAIL SUPPORTING FACE IMPERVIOUS TO FLUIDS AND DUST AND ADAPTED TO SUPPORT THE BASE PORTIONS OF RAILWAY RAILS WEIGHING IN THE RANGE OF 75# TO 165# PER YARD, AND A METAL TIE PLATE HAVING VERTICALLY EXTENDING OPENINGS FILLED WITH THE MATERIAL OF THE TIE DURING MOLDING OF THE TIE TO SECURE THE PLATE AGAINST MOVEMENT IN BOTH HORIZONTAL AND LONGITUDINAL DIRECTIONS IN RELATION TO THE EXPOSED SURFACE OF THE TIE.
References Cited (Backward Citations)
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US1082433A
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US1218537A
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US3196196A
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US3193201A
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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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |