Patent US4174820A successfully refreshed from Google Patents.
US4174820A
Expired / Lapsed
US
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Method for moving a railway switch and equipment for implementing the method
Assignee: ELEKTRO-THERMIT WEICHENBAU GmbH
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Filing: 1978-06-06
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Granted: 1979-11-20
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Expires: 1998-06-06
Abstract
Abstract This invention relates to an improvement in an apparatus and method for moving a railway switch composed of travel rail sections of a main track which are pivoted by positioning elements to rail sections of a branch-off track and locked by closing elements in a particular position with respect to a switch plate extending across the switch, the improvement comprising two positioning sleds, a profiled guide rail supporting each of said sleds, one of said guide rails being outside of and parallel to said travel rail sections of said main track, and the other of said guide rails being outside of and parallel to said rail sections of said branch-off track, and a cross-piece on each positioning sled, each of said cross-pieces having a compression roller mounted thereon and adapted to engage the inside of a rail head of an adjacent travel rail.
Inventors
- 👤 Bernd-Joachim Kempa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:48
CPC Classifications
B; B61; B61L; B61L5/00; B61L5/06; B61L5/065
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
139 words
In an apparatus for moving a railway switch composed of travel rail sections of a main track which are pivoted to rail sections of a branch-off track and locked by closing elements in a particular position with respect to a switch plate extending across the switch, the improvement comprising two positioning sled means, a profiled guide rail means supporting each of said sled means, one of said guide rail means being outside of and parallel to said travel rail sections of said main track, and the other of said guide rail means being outside of and parallel to said rail sections of said branch-off track, and cross-piece means on each positioning sled means, each of said cross-piece means having compression roller means mounted thereon and adapted to engage the inside of a rail head of an adjacent travel rail.
Claim 2
Dependent Claim
139 words
In an apparatus for moving a railway switch composed of travel rail sections of a main track which are pivoted to rail sections of a branch-off track and locked by closing elements in a particular position with respect to a switch plate extending across the switch, the improvement comprising two positioning sled means, a profiled guide rail means supporting each of said sled means, one of said guide rail means being outside of and parallel to said travel rail sections of said main track, and the other of said guide rail means being outside of and parallel to said rail sections of said branch-off track, and cross-piece means on each positioning sled means, each of said cross-piece means having compression roller means mounted thereon and adapted to engage the inside of a rail head of an adjacent travel rail.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1 including guide tie means supporting said guide rail means and said rail sections.
Claim 4
Dependent Claim
57 words
An apparatus according to claim 2 in which said guide tie means includes two parallel, spaced guide rails connected to said switch plate, wheel means between said parallel, spaced guide rails, means connecting said wheel means in form-locking manner with horizontally movable gliding plate means, and means connecting said gliding plate means with said travel rail sections.
Claim 5
Dependent Claim
35 words
An apparatus according to claim 2 including closing means on both sides of said gliding plate means, said closing means being pivotal and adapted to be locked into corresponding recesses of said gliding plate means.
Claim 6
Dependent Claim
22 words
An apparatus according to claim 4 including means at the underside of said cross-piece means for locking and unlocking said closing means.
Claim 7
Dependent Claim
24 words
An apparatus according to claim 1 including drive means on said positioning sled means adapted to engage in recesses in said guide rail means.
Claim 8
Dependent Claim
32 words
An apparatus according to claim 6 in which said drive means includes motor means adapted to drive a drive element means in contact with said guide rail means in a form-locking manner.
Claim 9
Dependent Claim
15 words
An apparatus according to claim 7 in which said drive element means is a gear.
Claim 10
Dependent Claim
35 words
An apparatus according to claim 6 in which said drive means includes electric motor means making contact through a current tap with an electrified rail, and means supporting said electrified rail on guide tie means.
Claim 11
Dependent Claim
97 words
In the method of moving a railway switch composed of travel rail sections of a main track which are pivoted to rail sections of a branch-off track and locked by closing elements in a particular position with respect to a switch plate extending across the switch, the improvement comprising pivoting said travel rail sections by means of two positioning sleds, one being adapted to move on a guide rail outside of and parallel to said travel rail sections, and the other on a guide rail outside of and parallel to said rail sections of said branch-off track.
Claim 12
Dependent Claim
97 words
In the method of moving a railway switch composed of travel rail sections of a main track which are pivoted to rail sections of a branch-off track and locked by closing elements in a particular position with respect to a switch plate extending across the switch, the improvement comprising pivoting said travel rail sections by means of two positioning sleds, one being adapted to move on a guide rail outside of and parallel to said travel rail sections, and the other on a guide rail outside of and parallel to said rail sections of said branch-off track.
Claim 13
Dependent Claim
33 words
A method according to claim 10 in which said positioning sleds close locking devices of said travel rail sections when moving into switching position and open them when returning out of switching position.
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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |