US3077600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad crossing
Assignee: Individual
•
Filing: 1960-04-19
•
Granted: 1963-02-12
•
Expires: 1980-04-19
Abstract
No abstract record available.
Inventors
- 👤 Spence Paulsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:58
CPC Classifications
E; E01; E01C; E01C9/00; E01C9/04; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5191
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A RAILROAD CROSSING COMPRISING A RIGID BASE, SAID RIGID BASE EXTENDING LONGITUDINALLY AND HAVING AN UPPER SURFACE HAVING PERIPHERAL DIMENSIONS SUBSTANTIALLY EQUAL TO THAT OF SAID CROSSING, A LAYER OF DISTRIBUTABLE SAND, SAID LAYER OF DISTRIBUTABLE SAND HAVING PERIPHERAL DIMENSIONS AND SURFACE AREAS SUBSTANTIALLY EQUAL TO THAT OF SAID RIGID BASE AND BEING SUPPORTED ON SAID UPPER SURFACE OF SAID RIGID BASE, A PLURALITY OF RAIL TIES, SAID RAIL TIES EXTENDING AND BEING POSITIONED DIRECTLY ON TOP OF SAID LAYER OF SAND AND BEING SUPPORTED THEREBY, PARALLEL AND TRANSVERSELY SPACED TRAIN RAILS, SAID TRAIN RAILS EXTENDING LONGITUDINALLY ON TOP OF SAID TIES AND SECURED THERETO, AND A RELATIVELY RESILIENT HOT MIX ASPHALT FILLER INTERPOSED BETWEEN SAID TIES AND SAID RAILS AND BEING SUPPORTED BY SAID LAYER OF SAND BETWEEN SAID TIES, SAID AREA OF SAND HAVING PERIPHERAL EDGES SPACED INWARDLY OF SAID PERIPHERAL EDGES OF SAID RIGID BASE, WHEREBY RETAINER LIPS ARE FORMED BY SAID HIGHWAY FILLER, SAID RETAINER LIPS PROJECTING DOWNWARDLY ADJACENT SAID EDGES OF SAID LAYER OF SAND.
Claim 2
Dependent Claim
170 words
A RAILROAD CROSSING COMPRISING A RIGID BASE, SAID RIGID BASE EXTENDING LONGITUDINALLY AND HAVING AN UPPER SURFACE HAVING PERIPHERAL DIMENSIONS SUBSTANTIALLY EQUAL TO THAT OF SAID CROSSING, A LAYER OF DISTRIBUTABLE SAND, SAID LAYER OF DISTRIBUTABLE SAND HAVING PERIPHERAL DIMENSIONS AND SURFACE AREAS SUBSTANTIALLY EQUAL TO THAT OF SAID RIGID BASE AND BEING SUPPORTED ON SAID UPPER SURFACE OF SAID RIGID BASE, A PLURALITY OF RAIL TIES, SAID RAIL TIES EXTENDING AND BEING POSITIONED DIRECTLY ON TOP OF SAID LAYER OF SAND AND BEING SUPPORTED THEREBY, PARALLEL AND TRANSVERSELY SPACED TRAIN RAILS, SAID TRAIN RAILS EXTENDING LONGITUDINALLY ON TOP OF SAID TIES AND SECURED THERETO, AND A RELATIVELY RESILIENT HOT MIX ASPHALT FILLER INTERPOSED BETWEEN SAID TIES AND SAID RAILS AND BEING SUPPORTED BY SAID LAYER OF SAND BETWEEN SAID TIES, SAID AREA OF SAND HAVING PERIPHERAL EDGES SPACED INWARDLY OF SAID PERIPHERAL EDGES OF SAID RIGID BASE, WHEREBY RETAINER LIPS ARE FORMED BY SAID HIGHWAY FILLER, SAID RETAINER LIPS PROJECTING DOWNWARDLY ADJACENT SAID EDGES OF SAID LAYER OF SAND.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |