Patent US3343496A successfully refreshed from Google Patents.
US3343496A
Expired / Lapsed
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Method for lining curves
Assignee: Franz Plasser Bahnbaumaschinen Industrie GmbH
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Filing: 1965-03-31
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Granted: 1967-09-26
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Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 Warnick Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:29
CPC Classifications
E; E01; E01B; E01B35/00; E01B2203/00; E01B2203/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A METHOD OF LINING A TRACK CURVE TO PRODUCE A TRACK CURVE SECTION CONSTITUTING A SUBSTANTIALLY CIRCULAR ARC EXTENDING BETWEEN TWO END POINTS, A CHORD EXTENDING BETWEEN SAID END POINTS AND A FIRST PORTION OF THE TRACK CURVE SECTION EXTENDING BETWEEN A FIRST ONE OF SAID END POINTS AND A FIRST INTERMEDIATE POINT OF THE TRACK CURVE SECTION HAVING BEEN LINED TO FORM A FIRST PORTION OF SAID CIRCULAR ARC, THE STEPS OF ESTABLISHING THE LENGTH OF A FIRST STRAIGHT LINE FROM THE CHORD TO THE FIRST INTERMEDIATE POINT, ESTABLISHING A SECOND STRAIGHT LINE FROM THE CHORD TO A SECOND INTERMEDIATE POINT IN A SECOND PORTION OF THE TRACK CURVE SECTION EXTENDING BETWEEN THE FIRST INTERMEDIATE POINT AND THE SECOND END POINT, THE SECOND STRAIGHT LINE BEING GEOMETRICALLY ANALOGOUS TO THE FIRST STRAIGHT LINE AND ITS LENGTH BEING ACCORDINGLY DERIVABLE FROM THE LENGTH OF THE FIRST STRAIGHT LINE ON THE BASIS OF GEOMETRICAL THEOREMS CONCERNING THE CIRCLE, AND MOVING THE SECOND TRACK CURVE SECTION PORTION PERPENDICULARLY TO THE DIRECTION OF ELONGATION OF THE TRACK UNTIL THE SECOND STRAIGHT LINE HAS THE DERIVED LENGTH FROM THE CHORD TO THE SECOND INTERMEDIATE POINT.
Claim 2
Independent Claim
191 words
A METHOD OF LINING A TRACK CURVE TO PRODUCE A TRACK CURVE SECTION CONSTITUTING A SUBSTANTIALLY CIRCULAR ARC EXTENDING BETWEEN TWO END POINTS, A CHORD EXTENDING BETWEEN SAID END POINTS AND A FIRST PORTION OF THE TRACK CURVE SECTION EXTENDING BETWEEN A FIRST ONE OF SAID END POINTS AND A FIRST INTERMEDIATE POINT OF THE TRACK CURVE SECTION HAVING BEEN LINED TO FORM A FIRST PORTION OF SAID CIRCULAR ARC, THE STEPS OF ESTABLISHING THE LENGTH OF A FIRST STRAIGHT LINE FROM THE CHORD TO THE FIRST INTERMEDIATE POINT, ESTABLISHING A SECOND STRAIGHT LINE FROM THE CHORD TO A SECOND INTERMEDIATE POINT IN A SECOND PORTION OF THE TRACK CURVE SECTION EXTENDING BETWEEN THE FIRST INTERMEDIATE POINT AND THE SECOND END POINT, THE SECOND STRAIGHT LINE BEING GEOMETRICALLY ANALOGOUS TO THE FIRST STRAIGHT LINE AND ITS LENGTH BEING ACCORDINGLY DERIVABLE FROM THE LENGTH OF THE FIRST STRAIGHT LINE ON THE BASIS OF GEOMETRICAL THEOREMS CONCERNING THE CIRCLE, AND MOVING THE SECOND TRACK CURVE SECTION PORTION PERPENDICULARLY TO THE DIRECTION OF ELONGATION OF THE TRACK UNTIL THE SECOND STRAIGHT LINE HAS THE DERIVED LENGTH FROM THE CHORD TO THE SECOND INTERMEDIATE POINT.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |