Patent US3892356A successfully refreshed from Google Patents.
US3892356A
Expired / Lapsed
US
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Modular railroad grade crossing
Assignee: RAILCO Inc
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Filing: 1974-06-12
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Granted: 1975-07-01
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Expires: 1994-06-12
Abstract
Abstract A modular railroad grade crossing comprises in combination a railroad grade crossing base on which are superimposed rails and flangeway guards secured rigidly to the base and to each other.
Inventors
- 👤 Paul G Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:34
CPC Classifications
E; E01; E01C; E01C9/00; E01C9/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
248 words
A modular railroad grade crossing comprising in combination: a. a railroad grade crossing base, b. superimposed on the base a pair of spaced, parallel flangeway guards each comprising an integral plate angularly shaped in tranverse cross section to provide 1. a substantially horizontal outwardly directed base segment disposed flat on the upper surface of the grade crossing base, 2. a reversely bent upright rail guard segment, and 3. an inwardly directed substantially horizontal cap segment, c. a pair of spaced, parallel railroad rails superimposed on the base plate segments of the flangeway guards in substantially parallel laterally spaced relation thereto, d. first securing means securing one side of the base plate segments to the grade crossing base, and one side of the rails to the base plate segments, E. the reversely bent upright rail guard segment providing a pocket between the lower ends of the rail and guard segment for reception of said first securing means while spacing the upper end of the guard segment closer to the upper end of the rail for reception of the flange of the railroad car wheel, f. second securing means securing the other side of the base plate segments to the grade crossing base and the other side of the rails to the base plate segments, and g. paving material supported on the grade crossing base between the upright rail guard segments and beneath the cap segments of the railway guards by which the paving material is retained and capped, respectively.
Claim 2
Dependent Claim
248 words
A modular railroad grade crossing comprising in combination: a. a railroad grade crossing base, b. superimposed on the base a pair of spaced, parallel flangeway guards each comprising an integral plate angularly shaped in tranverse cross section to provide 1. a substantially horizontal outwardly directed base segment disposed flat on the upper surface of the grade crossing base, 2. a reversely bent upright rail guard segment, and 3. an inwardly directed substantially horizontal cap segment, c. a pair of spaced, parallel railroad rails superimposed on the base plate segments of the flangeway guards in substantially parallel laterally spaced relation thereto, d. first securing means securing one side of the base plate segments to the grade crossing base, and one side of the rails to the base plate segments, E. the reversely bent upright rail guard segment providing a pocket between the lower ends of the rail and guard segment for reception of said first securing means while spacing the upper end of the guard segment closer to the upper end of the rail for reception of the flange of the railroad car wheel, f. second securing means securing the other side of the base plate segments to the grade crossing base and the other side of the rails to the base plate segments, and g. paving material supported on the grade crossing base between the upright rail guard segments and beneath the cap segments of the railway guards by which the paving material is retained and capped, respectively.
Claim 3
Dependent Claim
8 words
a reversely bent upright rail guard segment, and
Claim 4
Dependent Claim
8 words
a reversely bent upright rail guard segment, and
Claim 5
Dependent Claim
65 words
The modular railroad grade crossing structural assembly of claim 1 wherein the grade crossing base comprises a plurality oF wooden railroad ties, the first securing means comprise elongated bolts extending upward through the ties and openings in the base segment, the lower ends of the bolts having enlarged heads, and elongated clamping bars are interposed between said enlarged heads and the underside of the ties.
Claim 6
Dependent Claim
180 words
an inwardly directed substantially horizontal cap segment, c. a pair of spaced, parallel railroad rails superimposed on the base plate segments of the flangeway guards in substantially parallel laterally spaced relation thereto, d. first securing means securing one side of the base plate segments to the grade crossing base, and one side of the rails to the base plate segments, E. the reversely bent upright rail guard segment providing a pocket between the lower ends of the rail and guard segment for reception of said first securing means while spacing the upper end of the guard segment closer to the upper end of the rail for reception of the flange of the railroad car wheel, f. second securing means securing the other side of the base plate segments to the grade crossing base and the other side of the rails to the base plate segments, and g. paving material supported on the grade crossing base between the upright rail guard segments and beneath the cap segments of the railway guards by which the paving material is retained and capped, respectively.
Claim 7
Dependent Claim
180 words
an inwardly directed substantially horizontal cap segment, c. a pair of spaced, parallel railroad rails superimposed on the base plate segments of the flangeway guards in substantially parallel laterally spaced relation thereto, d. first securing means securing one side of the base plate segments to the grade crossing base, and one side of the rails to the base plate segments, E. the reversely bent upright rail guard segment providing a pocket between the lower ends of the rail and guard segment for reception of said first securing means while spacing the upper end of the guard segment closer to the upper end of the rail for reception of the flange of the railroad car wheel, f. second securing means securing the other side of the base plate segments to the grade crossing base and the other side of the rails to the base plate segments, and g. paving material supported on the grade crossing base between the upright rail guard segments and beneath the cap segments of the railway guards by which the paving material is retained and capped, respectively.
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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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |