Patent US3750299A successfully refreshed from Google Patents.
US3750299A
Expired / Lapsed
US
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Track apparatus with laser beam reference
Assignee: Franz Plasser Bahnbaumaschinen Industrie GmbH
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Filing: 1971-08-30
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Granted: 1973-08-07
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Expires: 1991-08-30
Abstract
Abstract A laser beam reference or datum in a track surfacer, liner or surveying apparatus is intercepted by a mask or sensor which is held in a measurably fixed relationship to the grade rail. This sensor is connected with the track lining or leveling tool, or a track position recorder or signaling instrument, and control signals from the sensor in response to laser beam impingement thereon operate the respective tool or recording or signaling instrument.
Inventors
- 👤 F Plasser
- 👤 J Theurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:01
CPC Classifications
E; E01; E01B; E01B35/00; E01B27/00; E01B27/12; E01B27/13; E01B27/16; E01B27/17; E01B35/06; G; G01; G01C; G01C15/00; G01C15/002; G01C15/004; E01B2203/00; E01B2203/10; E01B2203/12; E01B2203/14; E01B2203/143; E01B2203/148; E01B2203/16; Y; Y10; Y10S; Y10S33/00; Y10S33/21; Y10S37/00; Y10S37/907
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
124 words
A track surveying apparatus for indicating a desired correction of the position of an uncorrected track section in relation to a laser beam datum, comprising 1. a laser beam emitter positioned in the uncorrected track section; 2. means for controlling the path of the laser beam; 3. means for pressing the laser beam path controlling means into a measurably fixed relationship to a selected grade rail of the track section; and 4. a reference system indicating the desired position of the track section, a. the reference system including an end movable in relation to the track section, and b. the movable reference system end being connected to the laser beam path controlling means for moving the end in dependence on the laser beam path.
Claim 2
Dependent Claim
124 words
A track surveying apparatus for indicating a desired correction of the position of an uncorrected track section in relation to a laser beam datum, comprising 1. a laser beam emitter positioned in the uncorrected track section; 2. means for controlling the path of the laser beam; 3. means for pressing the laser beam path controlling means into a measurably fixed relationship to a selected grade rail of the track section; and 4. a reference system indicating the desired position of the track section, a. the reference system including an end movable in relation to the track section, and b. the movable reference system end being connected to the laser beam path controlling means for moving the end in dependence on the laser beam path.
Claim 3
Dependent Claim
9 words
means for controlling the path of the laser beam;
Claim 4
Dependent Claim
9 words
means for controlling the path of the laser beam;
Claim 5
Dependent Claim
34 words
a support for supporting the laser beam emitter, a. the support being adjustable in respect of a selected grade rail of the track section and b. the support being movable along the track section;
Claim 6
Dependent Claim
34 words
a support for supporting the laser beam emitter, a. the support being adjustable in respect of a selected grade rail of the track section and b. the support being movable along the track section;
Claim 7
Dependent Claim
31 words
The track surveying apparatus of claim 1, wherein the laser beam path controlling means comprises laser beam sensitive elements producing indicating signals upon impingement of the laser beam on said elements.
Claim 8
Dependent Claim
17 words
The track surveying apparatus of claim 2, further comprising a recording instrument for recording the indicating signals.
Claim 9
Dependent Claim
54 words
a laser beam target comprising laser beam sensitive elements producing indicating signals upon impingement of the laser beam on said elements, alignment of the laser beam with selected ones of the elements controlling the path of the laser beam, a. the position of the target being fixed in relation to the grade rail; and
Claim 10
Dependent Claim
54 words
a laser beam target comprising laser beam sensitive elements producing indicating signals upon impingement of the laser beam on said elements, alignment of the laser beam with selected ones of the elements controlling the path of the laser beam, a. the position of the target being fixed in relation to the grade rail; and
Claim 11
Dependent Claim
24 words
means for pressing the laser beam path controlling means into a measurably fixed relationship to a selected grade rail of the track section; and
Claim 12
Dependent Claim
24 words
means for pressing the laser beam path controlling means into a measurably fixed relationship to a selected grade rail of the track section; and
Claim 13
Dependent Claim
52 words
a reference system indicating the desired position of the track section, a. the reference system including an end movable in relation to the track section, and b. the movable reference system end being connected to the laser beam path controlling means for moving the end in dependence on the laser beam path.
Claim 14
Dependent Claim
52 words
a reference system indicating the desired position of the track section, a. the reference system including an end movable in relation to the track section, and b. the movable reference system end being connected to the laser beam path controlling means for moving the end in dependence on the laser beam path.
Claim 15
Dependent Claim
39 words
a reference system indicating the desired position of the track section connected to the laser beam emitter support for adjusting the reference system in response to the support adjustment upon alignment of the laser beam with the selected elements.
Claim 16
Dependent Claim
39 words
a reference system indicating the desired position of the track section connected to the laser beam emitter support for adjusting the reference system in response to the support adjustment upon alignment of the laser beam with the selected elements.
Claim 17
Dependent Claim
40 words
The track surveying apparatus of claim 2, wherein the laser beam emitter is arranged to emit a laser beam extending in at least one plane, and the laser beam sensitive elements are arranged to intercept the laser beam only partially.
Claim 18
Dependent Claim
17 words
The track surveying apparatus of claim 4, wherein the laser beam extends in two perpendicularly intersecting planes.
Claim 19
Dependent Claim
25 words
The track surveying apparatus of claim 5, wherein the intersecting laser beam planes meet along a common axis extending in the direction of track elongation.
Claim 20
Dependent Claim
21 words
The track surveying apparatus of claim 4, wherein the last beam emitter is arranged to emit two parallel planar laser beams.
Claim 21
Dependent Claim
43 words
The track surveying apparatus of claim 2, wherein the laser beam sensitive elements are arranged about a central region of the laser beam both controlling means, and said signals automatically centering the laser beam path controlling means in respect of the laser beam.
Claim 22
Dependent Claim
20 words
The track surveying apparatus of claim 2, further comprising a servo motor responsive to the signals for adjusting the emitter.
Claim 23
Dependent Claim
30 words
The track surveying apparatus of claim 1, further comprising means for pressing the laser beam emitter into a measurably fixed relationship to a selected grade rail of the track section.
Claim 24
Dependent Claim
65 words
The track surveying apparatus of claim 10, further comprising a forward carriage in the uncorrected track section supporting the laser beam emitter; a laser beam target in the path of the laser beam; a rear carriage in a previously corrected track section and supporting the laser beam target; and means for pressing the rear carriage into a measurably fixed relationship to the selected grade rail.
Claim 25
Dependent Claim
49 words
The track surveying apparatus of claim 1, wherein the laser beam path controlling means comprises laser beam sensitive elements producing indicating signals upon impingement of the laser beam on said elements, and a remote control for aligning the laser beam emitter with the elements in response to the signals.
Claim 26
Dependent Claim
25 words
A track suRveying apparatus for indicating a desired correction of the position of an uncorrected track section in relation to a laser beam datum, comprising
Claim 27
Dependent Claim
25 words
A track suRveying apparatus for indicating a desired correction of the position of an uncorrected track section in relation to a laser beam datum, comprising
Claim 28
Dependent Claim
19 words
The track survey apparatus of claim 13, further comprising a remote control for adjusting the laser beam emitter support.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |