Patent US3781775A successfully refreshed from Google Patents.
US3781775A
Expired / Lapsed
US
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Rotating stereo sonar mapping and positioning system
Assignee: United States Department of the Navy
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Filing: 1972-05-01
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Granted: 1973-12-25
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Expires: 1992-05-01
Abstract
Abstract A stereo sonar system comprising a pair of pulsed sonar transducers mounted one above the other on a stationary bottom frame. The transducers are rotated as a unit but are spaced sufficiently to produce a three dimensional figure when stereo viewed.
Inventors
- 👤 R Malloy
- 👤 R Hitchcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:32
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/88; G01S15/89; G01S15/8902
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
A stereo sonar system for both accurate mapping of an aqueous floor and positioning of objects on said floor comprising: a supporting framework; a pair of fan-beam pulsed sonar transducers mounted one above the other in spaced relationship on said framework and; means for rotating said transducer as a unit; said transducers adapted to be rotated together but being sufficiently spaced to produce a pair of sonar records in one operation which are used to produce a three-dimensional figure when stereo viewed.
Claim 2
Dependent Claim
82 words
A stereo sonar system for both accurate mapping of an aqueous floor and positioning of objects on said floor comprising: a supporting framework; a pair of fan-beam pulsed sonar transducers mounted one above the other in spaced relationship on said framework and; means for rotating said transducer as a unit; said transducers adapted to be rotated together but being sufficiently spaced to produce a pair of sonar records in one operation which are used to produce a three-dimensional figure when stereo viewed.
Claim 3
Dependent Claim
20 words
The stereo sonar system of claim 1 wherein: the transducers are mounted in spaced vertical relationship on the same axis.
Claim 4
Dependent Claim
25 words
The stereo sonar system of claim 2 wherein: said supporting framework is adjustable to provide leveling action in the event the aqueous floor is uneven.
Claim 5
Dependent Claim
84 words
A stereo sonar system for both accurate mapping of an underwater floor and positioning of objects on said floor comprising: a supporting framework; a single fan-beam pulsed sonar transducer mounted on said framework; means for rotating said transducer; said single transducer being operated at two different elevations on the same vertical axis while being rotated to obtain records of two different sonar images which are used to produce a three-dimensionsal picture of a circular area of said floor when both images are stereo viewed.
Claim 6
Dependent Claim
84 words
A stereo sonar system for both accurate mapping of an underwater floor and positioning of objects on said floor comprising: a supporting framework; a single fan-beam pulsed sonar transducer mounted on said framework; means for rotating said transducer; said single transducer being operated at two different elevations on the same vertical axis while being rotated to obtain records of two different sonar images which are used to produce a three-dimensionsal picture of a circular area of said floor when both images are stereo viewed.
References Cited (Backward Citations)
US3161255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |