US3992935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for indicating track conditions
Assignee: Franz Plasser Bahnbaumaschinen Industrie GmbH
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Filing: 1974-11-29
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Granted: 1976-11-23
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Expires: 1994-11-29
Abstract
Abstract Changes in acceleration caused by local track conditions are directly or indirectly measured as a car moves over a track section. The resultant signals are totalled to produce a signal or parameter characteristic of the track section condition, and this is compared with a comparison signal characteristic of a track condition norm.
Inventors
- 👤 Egon Schubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:05
CPC Classifications
G; G01; G01M; G01M99/00; B; B61; B61K; B61K9/00; B61K9/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
235 words
An apparatus for indicating the condition of a railway track section, comprising two associated and cooperating measuring bogies closely spaced along the track section in a tandem arrangement, each measuring bogie being mounted on the track section on at least two axles and responsive to the condition of the track section independently of the other measuring bogie, an element extending from each one of the bogies in the direction of the track section elongation, the elements extending towards each other, each of the elements carrying a measuring part, the measuring parts being constituted essentially by two carrying plates of substantially the same size being mounted on the bogies for movement therewith in a direction perpendicular to the axis of the track section in response to a corresponding movement by a respective one of the bogies caused by the condition of the track section during their movement along and over the track section, the two plates extending substantially perpendicularly to the track section axis and having glidingly contacting surfaces an electrically insulating film on each of the surfaces, radially extending windings carried by each of the plates, an alternating current source in circuit with the windings on one of the plates, whereby the moving plates cooperate to produce signals indicating the relative position of the moving bogies, means for recording the signals, and the windings on the other plate being in circuit with the recording means.
Claim 2
Independent Claim
235 words
An apparatus for indicating the condition of a railway track section, comprising two associated and cooperating measuring bogies closely spaced along the track section in a tandem arrangement, each measuring bogie being mounted on the track section on at least two axles and responsive to the condition of the track section independently of the other measuring bogie, an element extending from each one of the bogies in the direction of the track section elongation, the elements extending towards each other, each of the elements carrying a measuring part, the measuring parts being constituted essentially by two carrying plates of substantially the same size being mounted on the bogies for movement therewith in a direction perpendicular to the axis of the track section in response to a corresponding movement by a respective one of the bogies caused by the condition of the track section during their movement along and over the track section, the two plates extending substantially perpendicularly to the track section axis and having glidingly contacting surfaces an electrically insulating film on each of the surfaces, radially extending windings carried by each of the plates, an alternating current source in circuit with the windings on one of the plates, whereby the moving plates cooperate to produce signals indicating the relative position of the moving bogies, means for recording the signals, and the windings on the other plate being in circuit with the recording means.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1, further comprising spring means biasing the two plates towards each other.
Claim 4
Dependent Claim
30 words
The apparatus of claim 1, wherein the measuring parts and the electrical circuit connected thereto, together with the recording means, forms a portable unit removably mountable on the measuring bogies.
Claim 5
Independent Claim
217 words
An apparatus for indicating the condition of a railway track section, comprising two associated and cooperating measuring bogies closely spaced along the track section in a tandem arrangement, each measuring bogie being mounted on the track section on at least two axles and responsive to the condition of the track section independently of the other measuring bogie, an element extending from each one of the bogies in the direction of the track section elongation, the elements extending towards each other, each of the elements carrying a measuring part, the measuring parts being constituted essentially by two metallic condenser plates of substantially the same size being mounted on the bogies for movement therewith in a direction perpendicular to the axis of the track section in response to a corresponding movement by a respective one of the bogies caused by the condition of the track section during their movement along and over the track section, the two plates extending substantially perpendicularly to the track section axis and having glidingly contacting surfaces, an electrically insulating dielectric between the contacting surfaces whereby the moving plates cooperate to produce capacity signals indicating the relative position of the moving bogies, an alternating current source in circuit with the plates, means for recording the signals, and the recording means being arranged in said circuit.
Claim 6
Independent Claim
217 words
An apparatus for indicating the condition of a railway track section, comprising two associated and cooperating measuring bogies closely spaced along the track section in a tandem arrangement, each measuring bogie being mounted on the track section on at least two axles and responsive to the condition of the track section independently of the other measuring bogie, an element extending from each one of the bogies in the direction of the track section elongation, the elements extending towards each other, each of the elements carrying a measuring part, the measuring parts being constituted essentially by two metallic condenser plates of substantially the same size being mounted on the bogies for movement therewith in a direction perpendicular to the axis of the track section in response to a corresponding movement by a respective one of the bogies caused by the condition of the track section during their movement along and over the track section, the two plates extending substantially perpendicularly to the track section axis and having glidingly contacting surfaces, an electrically insulating dielectric between the contacting surfaces whereby the moving plates cooperate to produce capacity signals indicating the relative position of the moving bogies, an alternating current source in circuit with the plates, means for recording the signals, and the recording means being arranged in said circuit.
Claim 7
Dependent Claim
17 words
The apparatus of claim 4, further comprising spring means biasing the two condenser plates towards each other.
Claim 8
Dependent Claim
30 words
The apparatus of claim 4, wherein the measuring parts and the electrical circuit connected thereto, together with the recording means, forms a portable unit removably mountable on the measuring bogies.
Claim 9
Independent Claim
177 words
An apparatus for indicating the condition of a railway track section, comprising two associated and cooperating measuring bogies closely spaced along the track section in a tandem arrangement, each measuring bogie being mounted on the track section on at least two axles and responsive to the condition of the track section independently of the other measuring bogie, an element extending from each one of the bogies in the direction of the track section elongation, the elements extending towards each other, each of the elements carrying a measuring part, the measuring parts being adjacent each other and being mounted on the bogies for movement therewith in a direction substantially perpendicularly in respect of each other and perpendicular to the axis of the track section in response to a corresponding movement by a respective one of the bogies caused by the condition of the track section during their movement along and over the track section, the moving measuring parts cooperating to produce electrical measuring signals indicating the relative positions of the moving bogies, and means for recording the signals.
Claim 10
Independent Claim
177 words
An apparatus for indicating the condition of a railway track section, comprising two associated and cooperating measuring bogies closely spaced along the track section in a tandem arrangement, each measuring bogie being mounted on the track section on at least two axles and responsive to the condition of the track section independently of the other measuring bogie, an element extending from each one of the bogies in the direction of the track section elongation, the elements extending towards each other, each of the elements carrying a measuring part, the measuring parts being adjacent each other and being mounted on the bogies for movement therewith in a direction substantially perpendicularly in respect of each other and perpendicular to the axis of the track section in response to a corresponding movement by a respective one of the bogies caused by the condition of the track section during their movement along and over the track section, the moving measuring parts cooperating to produce electrical measuring signals indicating the relative positions of the moving bogies, and means for recording the signals.
Claim 11
Dependent Claim
31 words
The apparatus of claim 7, wherein one of the parts is an electrical winding and the other part is an electrical core arranged for moving axially in respect of the winding.
Claim 12
Dependent Claim
37 words
The apparatus of claim 7, further comprising protective housings containing the respective measuring parts, the housings being telescoped into each other, and a universal joint mounting each of the housings on a respective one of the elements.
References Cited (Backward Citations)
US543425A
Cited
US3383913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |