Patent US3707330A successfully refreshed from Google Patents.
US3707330A
Expired / Lapsed
US
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Light beam guiding device
Assignee: Atlas Copco Jarva Inc
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Filing: 1971-02-05
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Granted: 1972-12-26
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Expires: 1991-02-05
Abstract
Abstract A light beam guiding device for a tunneling machine includes a light source for emitting a beam of light, a first target, and a second target. The first target includes means for passing a light pattern to the second target which is dependent upon the position of the first target relative to the light beam. The second target includes means for indicating the location of the light pattern thereon. Proper alignment of the tunneling machine relative to the light beam is determined by a predetermined light pattern from the first target falling on a predetermined location of the second target. Each target is mounted on the tunneling machine by a mounting means, each of which includes a means to adjustably position its associated target relative to the tunneling machine to compensate for machine roll.
Inventors
- 👤 Marmon Pine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:01
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/16; E; E21; E21B; E21B7/00; E21B7/04; G01S3/00; G01S3/78; G05; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
189 words
A guiding device for a tunneling machine comprising a light source for emitting a beam of light, first target means disposed on said tunneling machine, and second target means disposed on said tunneling machine on a side of said first target means away from said light source, said first target means including means for blocking transmission of a portion of said light beam and means for passing a portion of said light beam to said second target means, said means for blocking and said means for transmitting together defining a plurality of information bearing reference patterns on said first target means, said reference patterns defining a coordinate system for identifying the position of intersection of said light beam and said first target means said portion of said light beam which is passed to said second target means being modulated by at least one of and less than all of said reference patterns, said second target means including means for displaying a cross section of said modulated portion of said light beam, and said displayed cross section indicating the position of said first target means relative to said light beam.
Claim 2
Dependent Claim
189 words
A guiding device for a tunneling machine comprising a light source for emitting a beam of light, first target means disposed on said tunneling machine, and second target means disposed on said tunneling machine on a side of said first target means away from said light source, said first target means including means for blocking transmission of a portion of said light beam and means for passing a portion of said light beam to said second target means, said means for blocking and said means for transmitting together defining a plurality of information bearing reference patterns on said first target means, said reference patterns defining a coordinate system for identifying the position of intersection of said light beam and said first target means said portion of said light beam which is passed to said second target means being modulated by at least one of and less than all of said reference patterns, said second target means including means for displaying a cross section of said modulated portion of said light beam, and said displayed cross section indicating the position of said first target means relative to said light beam.
Claim 3
Dependent Claim
40 words
A guiding device as set forth in claim 1 wherein said second target means includes an indicating means for indicating the location of said portion of said light beam which is passed relative to a second target means reference location.
Claim 4
Dependent Claim
31 words
A guiding device as set forth in claim 2 wherein said means for passing a portion of said light beam includes an irregularly shaped passage means for defining said reference patterns.
Claim 5
Dependent Claim
22 words
A guiding device as set forth in claim 3 wherein said irregularly shaped passage means includes a reference character shaped passage means.
Claim 6
Dependent Claim
88 words
A guiding device as set forth in claim 1 wherein said means for passing a portion of said light beam includes a first horizontal row of identical reference characters spaced vertically above a first reference location, a second horizontal row of identical reference characters spaced vertically below said first reference location, a first vertical column of identical reference characters spaced horizontally to the right of said first reference location, and a second vertical column of identical reference characters spaced horizontally to the left of said first reference location.
Claim 7
Dependent Claim
70 words
A guiding device as set forth in claim 1 including first mounting means for mounting said first target means on said tunneling machine, second mounting means for mounting said second target means on said tunneling machine, and said first and second mounting means each including means for moving its associated target means along an arcuate path having a center of curvature coincident with the longitudinal centerline of said tunneling machine.
Claim 8
Independent Claim
200 words
A method of indicating the position of a first reference location of a first target means relative to a light beam and of a second reference location of a second target means relative to said light beam comprising positioning said firsT and second target means in intersecting relation to said light beam at axially spaced locations along said light beam, defining a coordinate system of information bearing reference patterns on said first target means by portions of greater and lesser transparency of said first target means for indicating the distance and the direction from said first reference location of the intersection of said light beam and first target means, defining a light pattern indicating said distance and direction by projecting at least a portion of said light beam through said first target means, said portion being modulated by at least one of and less than all of said reference patterns, and projecting said light pattern onto said second target means, whereby the intersection of said light pattern on said second target means indicates the position of said second reference location relative to said beam and said light pattern defines the position of said first reference location relative to said beam.
Claim 9
Independent Claim
200 words
A method of indicating the position of a first reference location of a first target means relative to a light beam and of a second reference location of a second target means relative to said light beam comprising positioning said firsT and second target means in intersecting relation to said light beam at axially spaced locations along said light beam, defining a coordinate system of information bearing reference patterns on said first target means by portions of greater and lesser transparency of said first target means for indicating the distance and the direction from said first reference location of the intersection of said light beam and first target means, defining a light pattern indicating said distance and direction by projecting at least a portion of said light beam through said first target means, said portion being modulated by at least one of and less than all of said reference patterns, and projecting said light pattern onto said second target means, whereby the intersection of said light pattern on said second target means indicates the position of said second reference location relative to said beam and said light pattern defines the position of said first reference location relative to said beam.
Claim 10
Dependent Claim
37 words
A method as set forth in claim 7 including indicating the location of said light pattern relative to said second reference location on said second target means by providing an indicating means on said second target means.
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |