Patent US3828440A successfully refreshed from Google Patents.
US3828440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track surveying
Assignee: Franz Plasser Bahnbaumaschinen Industrie GmbH
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Filing: 1972-04-13
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Granted: 1974-08-13
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Expires: 1992-04-13
Abstract
Abstract The track gage, camber or flexure, as well as the strength of the rail fastening may be measured with a surveying car with two surveying buggies or frames spaced from each other in the direction of track elongation and running on the track rails with the car. Each surveying frame has two axles having wheels running on the track rails. A respective undercarriage on which the car chassis is mounted is arranged between the two axles of a respective surveying frame. The surveying frames are preferably yielding and their axles and wheels indicate the relative position of the frames to each other and to the track.
Inventors
- 👤 E Schubert
- 👤 F Plasser
- 👤 J Theurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:17
CPC Classifications
B; B61; B61K; B61K9/00; B61K9/08; E; E01; E01B; E01B35/00; E01B2203/00; E01B2203/16
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
105 words
A railroad track surveying car comprising a chassis mounted on undercarriages for movement on and along the track rails, two surveying frames spaced from each other in the direction of track elongation and running on the track rails with the car, each surveying frame having two axles having rail surveying wheels running on the track rails, a respective one of the undercarriages being arranged between the two axles of at least one of the surveying frames, and means connected to the axles and wheels of the surveying frames for indicating the position of the surveying frames relative to each other and relative to the track.
Claim 2
Dependent Claim
105 words
A railroad track surveying car comprising a chassis mounted on undercarriages for movement on and along the track rails, two surveying frames spaced from each other in the direction of track elongation and running on the track rails with the car, each surveying frame having two axles having rail surveying wheels running on the track rails, a respective one of the undercarriages being arranged between the two axles of at least one of the surveying frames, and means connected to the axles and wheels of the surveying frames for indicating the position of the surveying frames relative to each other and relative to the track.
Claim 3
Dependent Claim
45 words
The surveying car of claIm 1, wherein each of the surveying frames comprises universally linked frame parts including the axles of the frame whereby all the wheels may be maintained in contact with the respective rails of the track at any camber of the track.
Claim 4
Dependent Claim
31 words
The surveying car of claim 1, wherein the chassis is mounted on two undercarriages and each undercarriage is arranged between the two axles of a respective one of the surveying frames.
Claim 5
Dependent Claim
65 words
The surveying car of claim 1, wherein the two surveying frames are adjacently mounted so that one of the axles of one of the frames is adjacent one of the axles of the other one of the frames, and the distance between the two adjacent axles of the frames is less than the distance between the axles of each frame, each frame forming a reference.
Claim 6
Dependent Claim
52 words
The surveying car of claim 1, wherein at least some of the wheels of the surveying frames are flanged wheels, and comprising means for selectively pressing selected ones of the flanged wheels against a selected one of the track rails into engagement therewith, the selected rail and engaging wheels forming a reference.
Claim 7
Dependent Claim
40 words
The surveying car of claim 1, further comprising means for establishing associated straight lines extending in the direction of the track, each of the straight lines extending between two points on each surveying frame, the associated lines enclosing angles therebetween.
Claim 8
Dependent Claim
20 words
The surveying car of claim 1, further comprising a reference system including a reference line associated with the surveying frames.
Claim 9
Independent Claim
165 words
A method of measuring the gage of a track, comprising the steps of placing on the track two surveying frames spaced from each other in the direction of track elongation, each surveying frame having two axles having flanged wheels running on the track rails, supporting the two surveying frames on a chassis mounted on undercarriages for movement on and along the track rails, the surveying frames being so supported on the chassis that one axle of one of the surveying frames is closely adjacent one of the axles of the other surveying frame, and an undercarriage is arranged between the two axles of one of the surveying frames, continuously moving the chassis with the surveying frames on the undercarriages in said direction, continuously laterally pressing respective wheels of the adjacent axles against the opposite rails in opposite transverse directions while the chassis is continuously moving, and measuring the extend of the lateral movements of the wheels transversely of the track to establish the track gage.
Claim 10
Independent Claim
165 words
A method of measuring the gage of a track, comprising the steps of placing on the track two surveying frames spaced from each other in the direction of track elongation, each surveying frame having two axles having flanged wheels running on the track rails, supporting the two surveying frames on a chassis mounted on undercarriages for movement on and along the track rails, the surveying frames being so supported on the chassis that one axle of one of the surveying frames is closely adjacent one of the axles of the other surveying frame, and an undercarriage is arranged between the two axles of one of the surveying frames, continuously moving the chassis with the surveying frames on the undercarriages in said direction, continuously laterally pressing respective wheels of the adjacent axles against the opposite rails in opposite transverse directions while the chassis is continuously moving, and measuring the extend of the lateral movements of the wheels transversely of the track to establish the track gage.
Claim 11
Independent Claim
148 words
A method of measuring the camber of superelevation of a track, comprising the steps of placing on the track two surveying frames spaced from each other in the direction of track elongation, each surveying frame having two axles having wheels running on the track rails, the wheels of each surveying frame forming a quadrangle, supporting the two surveying frames on a chassis mounted on undercarriage for movement on and along the track rails, the surveying frames being so supported that one of the undercarriages is arranged between the two axles of one of the surveying frames, establishing diagonal lines between the wheels of each of said surveying frames, extending the diagonal lines to a vertical plane wherein respective ones of the diagonal lines of respective ones of the surveying frames intersect, and measuring the distance between the diagonal lines in the plane to establish the camber or superelevation.
Claim 12
Independent Claim
148 words
A method of measuring the camber of superelevation of a track, comprising the steps of placing on the track two surveying frames spaced from each other in the direction of track elongation, each surveying frame having two axles having wheels running on the track rails, the wheels of each surveying frame forming a quadrangle, supporting the two surveying frames on a chassis mounted on undercarriage for movement on and along the track rails, the surveying frames being so supported that one of the undercarriages is arranged between the two axles of one of the surveying frames, establishing diagonal lines between the wheels of each of said surveying frames, extending the diagonal lines to a vertical plane wherein respective ones of the diagonal lines of respective ones of the surveying frames intersect, and measuring the distance between the diagonal lines in the plane to establish the camber or superelevation.
Claim 13
Independent Claim
127 words
A method of measuring the flexure of a track on a ballast bed, comprising the steps of placing on the track two surveying frames spaced from each other in the direction of track elongation, each surveying frame having two axles having wheels running on the track rails supporting the two surveying frame on a chassis mounted on undercarriages for movement on and along the track rails, the surveying frames being so supported that each of the undercarriages is arranged between the two axles of a respective one of the surveying frames, establishing A first surveying point determined by one of the surveying frames, and measuring the vertical position of a second surveying point determined by the other surveying frame in respect of to the first surveying point.
Claim 14
Independent Claim
127 words
A method of measuring the flexure of a track on a ballast bed, comprising the steps of placing on the track two surveying frames spaced from each other in the direction of track elongation, each surveying frame having two axles having wheels running on the track rails supporting the two surveying frame on a chassis mounted on undercarriages for movement on and along the track rails, the surveying frames being so supported that each of the undercarriages is arranged between the two axles of a respective one of the surveying frames, establishing A first surveying point determined by one of the surveying frames, and measuring the vertical position of a second surveying point determined by the other surveying frame in respect of to the first surveying point.
Claim 15
Independent Claim
205 words
A method of measuring the strength of the rail fastening of track rails to their ties, comprising the steps of placing on the track two surveying frames spaced from each other in the direction of track elongation, each surveying frame having two axles having flanged wheels running on the track rails, supporting the two surveying frames on a chassis mounted on undercarriages for movement on and along the track rails, the surveying frames being so supported on the chassis that one axle of one of the surveying frames is closely adjacent one of the axles of the other surveying frame and one of the undercarriages is arranged between the two axles of one of the surveying frames, continuously moving the chassis with the surveying frames on the undercarriages in said direction, continuously laterally pressing respective wheels of the adjacent axles against the opposite rails in opposite transverse directions while the chassis is continuously moving with a lateral pressing force exceeding a predetermined strength of the rail fastening to permit the fastening to become loose and the track rails to become laterally displaced under the pressing force, and measuring the extent of such lateral displacement of the track rails caused by the lateral pressing force thereagainst.
Claim 16
Independent Claim
205 words
A method of measuring the strength of the rail fastening of track rails to their ties, comprising the steps of placing on the track two surveying frames spaced from each other in the direction of track elongation, each surveying frame having two axles having flanged wheels running on the track rails, supporting the two surveying frames on a chassis mounted on undercarriages for movement on and along the track rails, the surveying frames being so supported on the chassis that one axle of one of the surveying frames is closely adjacent one of the axles of the other surveying frame and one of the undercarriages is arranged between the two axles of one of the surveying frames, continuously moving the chassis with the surveying frames on the undercarriages in said direction, continuously laterally pressing respective wheels of the adjacent axles against the opposite rails in opposite transverse directions while the chassis is continuously moving with a lateral pressing force exceeding a predetermined strength of the rail fastening to permit the fastening to become loose and the track rails to become laterally displaced under the pressing force, and measuring the extent of such lateral displacement of the track rails caused by the lateral pressing force thereagainst.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |