US3785294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch for elevated binary railway vehicles
Assignee: Trenes Vertebrados SA
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Filing: 1971-09-28
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Granted: 1974-01-15
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Expires: 1991-09-28
Abstract
Abstract A switch for elevated binary railway vehicles, in which the outer rails are completely fixed and the only moving piece is a central articulated tongue or blade which turns through the angle necessary to allow trains to pass over one or other of the two tracks of the fork. The free end member of the tongue is articulated so that when its inner end makes contact with the fixed track its outer end can continue turning towards the inside of the track and thereby provide a smooth path for the passage of the trains.
Inventors
- 👤 A Omar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:22
CPC Classifications
A; A63; A63H; A63H19/00; A63H19/30; A63H19/32; E; E01; E01B; E01B25/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A switch for an elevated binary railway with inner and outer rails in which the outer rails remain fixed and follow a suitaBle divergent path and the inner rails divide at the fork, and with a frog where the inner rails diverge, comprising: a vertical shaft on an end of the frog, an arm articulated at one end to the shaft and having another moveable end, a second shaft mounted on the moveable end of the arm, a switchblade articulated at the second shaft, and intermediate support means for supporting the assembly of the arm and switchblade during their entire movement between positions wherein the switchblade lies adjacent different outer rails, said support means supporting the assembly near the point of articulation of the arm and switchblade.
Claim 2
Dependent Claim
127 words
A switch for an elevated binary railway with inner and outer rails in which the outer rails remain fixed and follow a suitaBle divergent path and the inner rails divide at the fork, and with a frog where the inner rails diverge, comprising: a vertical shaft on an end of the frog, an arm articulated at one end to the shaft and having another moveable end, a second shaft mounted on the moveable end of the arm, a switchblade articulated at the second shaft, and intermediate support means for supporting the assembly of the arm and switchblade during their entire movement between positions wherein the switchblade lies adjacent different outer rails, said support means supporting the assembly near the point of articulation of the arm and switchblade.
Claim 3
Dependent Claim
41 words
A switch for an elevated binary railway as defined in claim 1, characterized in that the point of articulation of the switchblade and arm determined by the moveable shaft is supported on a carriage which circulates over a small curved rail.
Claim 4
Dependent Claim
122 words
A railway switch comprising: a pair of laterally spaced outer rails that diverge; a frog located between said outer rails at a region where they diverge; a pair of laterally spaced inner rails that extend downpath from said frog; a switch arm pivotally mounted at said frog and extending in an up-path direction therefrom and located between said outer rails; and a blade pivotally mounted at the up-path end of said arm to selectively contact said outer rails as said switch arm pivots, said blade having opposite sides formed to extend tangentially to the respective outer rail which it contacts; said blade includes an upper flange and a box-like portion under the flange which can move laterally with respect to the flange.
Claim 5
Dependent Claim
122 words
A railway switch comprising: a pair of laterally spaced outer rails that diverge; a frog located between said outer rails at a region where they diverge; a pair of laterally spaced inner rails that extend downpath from said frog; a switch arm pivotally mounted at said frog and extending in an up-path direction therefrom and located between said outer rails; and a blade pivotally mounted at the up-path end of said arm to selectively contact said outer rails as said switch arm pivots, said blade having opposite sides formed to extend tangentially to the respective outer rail which it contacts; said blade includes an upper flange and a box-like portion under the flange which can move laterally with respect to the flange.
Claim 6
Dependent Claim
124 words
A switch for an elevated binary railway with inner and outer rails in which the outer rails remained fixed and follow a suitable divergent path and the inner rails divide at the fork, and with a frog where the inner rails diverge, comprising: a vertical shaft on an end of the frog, an arm articulated at one end to the shaft and having another moveable end, a second shaft mounted on the moveable end of the arm, and a switchblade articulated at the second shaft; the switchblade including two pieces of which one is an upper flange and the other is a box-like portion with walls on both sides of the flange, but in which the box-like portion can pivot further than the flange.
Claim 7
Dependent Claim
124 words
A switch for an elevated binary railway with inner and outer rails in which the outer rails remained fixed and follow a suitable divergent path and the inner rails divide at the fork, and with a frog where the inner rails diverge, comprising: a vertical shaft on an end of the frog, an arm articulated at one end to the shaft and having another moveable end, a second shaft mounted on the moveable end of the arm, and a switchblade articulated at the second shaft; the switchblade including two pieces of which one is an upper flange and the other is a box-like portion with walls on both sides of the flange, but in which the box-like portion can pivot further than the flange.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |