Patent US3698816A successfully refreshed from Google Patents.
US3698816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser guidance system
Assignee: AT&T Inc
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Filing: 1970-09-16
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Granted: 1972-10-17
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Expires: 1990-09-16
Abstract
Abstract A laser guidance system utilizes two synchronized rotating laser beacons to generate desired two and three-dimensional reference curves in space. The orientation of one beacon is a prescribed function of the orientation of the other beacon and a reference curve is traced out in space as the loci of intersections of the rotating beacons. The intersections are detected so that the reference curve can be followed.
Inventors
- 👤 Milton Lutchansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:14
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A laser guidance system for directing apparatus along a prescribed three-dimensional reference path comprising, in combination: means including first and second laser beacons, each having two orthogonal axes of rotation, for directing laser beams from said beacons along said three-dimensional path; means for controlling the rotation of said beacons about respective axes, the rotation of said second beacon being a continuous prescribed function of the rotation of said first beacon, said function being determined by the location of said beacons with respect to said three-dimensional path, said beams intersecting along said three-dimensional path, said path being defined by the loci of intersections of said beams as said beacons rotate; means for detecting said intersections and generating signals which are a measure of the position of said apparatus with respect to said three-dimensional reference path; and control means for utilizing said signals to direct said apparatus along said reference path.
Claim 2
Dependent Claim
149 words
A laser guidance system for directing apparatus along a prescribed three-dimensional reference path comprising, in combination: means including first and second laser beacons, each having two orthogonal axes of rotation, for directing laser beams from said beacons along said three-dimensional path; means for controlling the rotation of said beacons about respective axes, the rotation of said second beacon being a continuous prescribed function of the rotation of said first beacon, said function being determined by the location of said beacons with respect to said three-dimensional path, said beams intersecting along said three-dimensional path, said path being defined by the loci of intersections of said beams as said beacons rotate; means for detecting said intersections and generating signals which are a measure of the position of said apparatus with respect to said three-dimensional reference path; and control means for utilizing said signals to direct said apparatus along said reference path.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |