Patent FR874568A successfully refreshed from Google Patents.
Patent US4389942A successfully refreshed from Google Patents.
US4389942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch for a carriage of a two track suspension railroad
Assignee: Siemens AG
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Filing: 1980-12-05
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Granted: 1983-06-28
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Expires: 2000-12-05
Abstract
Abstract A switch for lateral guide rollers of a two track suspension railroad has a one piece central switch point which is arranged at the fork point of the inner guide surfaces and with which, in the vicinity of its free end, two further switch points may be associated which form parallel sections of guide surfaces which can be swung to the fixed guide surfaces or the central switch point.
Inventors
- 👤 Hans-Jurgen Dull
- 👤 Adolf Hillmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:00
CPC Classifications
E; E01; E01B; E01B25/00; E01B25/22; E01B25/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
168 words
In a switch for the carriage of a two track suspension railroad, in which two running surfaces for support wheels and, approximately perpendicularly thereto, parallel guide surfaces for lateral guide rollers are provided and in which, at the fork point of the inner guide surfaces, a central switch point pivoted about a vertical axis with guide surfaces on both long sides is linked onto the guide surfaces, the improvement comprising, the central switch point being made of one piece and two additional switch points in the region of its free end forming parallel guide surfaces, said additional switch points arranged in recesses of fixed guide surfaces and supported to be swung between the fixed guide surfaces and the central switch point, said guide rollers arranged in such a manner that they extend over the recess in the fixed guide surfaces and only one-half of their width cooperates with the fixed guide surfaces on the one side, and on the other side with one of the additional switch points.
Claim 2
Dependent Claim
168 words
In a switch for the carriage of a two track suspension railroad, in which two running surfaces for support wheels and, approximately perpendicularly thereto, parallel guide surfaces for lateral guide rollers are provided and in which, at the fork point of the inner guide surfaces, a central switch point pivoted about a vertical axis with guide surfaces on both long sides is linked onto the guide surfaces, the improvement comprising, the central switch point being made of one piece and two additional switch points in the region of its free end forming parallel guide surfaces, said additional switch points arranged in recesses of fixed guide surfaces and supported to be swung between the fixed guide surfaces and the central switch point, said guide rollers arranged in such a manner that they extend over the recess in the fixed guide surfaces and only one-half of their width cooperates with the fixed guide surfaces on the one side, and on the other side with one of the additional switch points.
Claim 3
Dependent Claim
41 words
The improvement according to claim 1, wherein said additional switch points are made flexible about vertical axes at the switch root, and the free ends of said switch points are coupled to follow the free end of the central switch point.
Claim 4
Dependent Claim
27 words
The improvement according to claim 1 and further including means supporting said central switch point for elastic displacement at its support point transversely to the travel axis.
Claim 5
Dependent Claim
136 words
In a switch for the carriage of a two track suspension railroad, in which two running surfaces for support wheels and approximately perpendicular thereto, parallel guide surfaces for lateral guide rollers are provided and in which, at the fork point of the inner guide surfaces, a central switch point pivoted about a vertical axis with guide surfaces on both long sides is linked onto the guide surfaces the improvement comprising: (a) recesses in the fixed guide surfaces, (b) the central switch point being made of one piece and supported so that its free end can be swung into said recesses; and (c) the guide rollers arranged so that they extend over the recesses in the fixed guide surfaces and cooperate with the end region of the central switch point only over about one-half of their width.
Claim 6
Dependent Claim
136 words
In a switch for the carriage of a two track suspension railroad, in which two running surfaces for support wheels and approximately perpendicular thereto, parallel guide surfaces for lateral guide rollers are provided and in which, at the fork point of the inner guide surfaces, a central switch point pivoted about a vertical axis with guide surfaces on both long sides is linked onto the guide surfaces the improvement comprising: (a) recesses in the fixed guide surfaces, (b) the central switch point being made of one piece and supported so that its free end can be swung into said recesses; and (c) the guide rollers arranged so that they extend over the recesses in the fixed guide surfaces and cooperate with the end region of the central switch point only over about one-half of their width.
References Cited (Backward Citations)
US462022A
Cited
FR1248112A
Cited
DE1459634B1
Cited
US3878792A
Cited
US3855938A
Cited
US4089270A
Cited
DE2723733A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |