Patent US3962671A successfully refreshed from Google Patents.
US3962671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calibration transducer
Assignee: United States Department of the Navy
•
Filing: 1975-08-18
•
Granted: 1976-06-08
•
Expires: 1995-08-18
Abstract
Abstract Valid artificial targets are generated by means of an external attachment ilizing a calibration transducer affixed against a homing system transducer within the nose section of the Torpedo Mark 48 Mod 1. The calibration transducer comprises four elements bonded to a Rho-C rubber surface with each element located in separate quadrants. A plurality of phase shifters for nulling purposes are connected between the four elements. Phase shifted signal inputs then enable the calibration transducer elements to provide acoustic signals corresponding to predetermined target angles.
Inventors
- 👤 Adam Jilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:17
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/001; G; G01; G01S; G01S3/00; G01S3/80; G01S3/801
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
A structure for use in testing a homing system in the nose section of a torpedo comprising: enclosing means adapted for holding and enclosing said nose section so that the axis of said nose section lies in a horizontal plane; a transducer assembly held and enclosed in said enclosing means and adapted to be held in firm abutment to said nose section, said transducer assembly includes a transducer housing enclosing a transducer plate having a plurality of transducer elements arranged in quadrature on said plate and said transducer assembly having an axis coinciding with the perpendicular axis of symmetry of said plate, said axis of said plate and said assembly lying in a horizontal plane; horizontal force means for exerting force in a horizontal direction adapted for holding said transducer housing in firm abutment with said nose section; and a liquid lubicant disposed on said transducer housing.
Claim 2
Dependent Claim
147 words
A structure for use in testing a homing system in the nose section of a torpedo comprising: enclosing means adapted for holding and enclosing said nose section so that the axis of said nose section lies in a horizontal plane; a transducer assembly held and enclosed in said enclosing means and adapted to be held in firm abutment to said nose section, said transducer assembly includes a transducer housing enclosing a transducer plate having a plurality of transducer elements arranged in quadrature on said plate and said transducer assembly having an axis coinciding with the perpendicular axis of symmetry of said plate, said axis of said plate and said assembly lying in a horizontal plane; horizontal force means for exerting force in a horizontal direction adapted for holding said transducer housing in firm abutment with said nose section; and a liquid lubicant disposed on said transducer housing.
Claim 3
Dependent Claim
27 words
A structure according to claim 1 wherein said enclosing means further comprises: a pair of end plates; and a plurality of rods connected between said end plates.
Claim 4
Dependent Claim
30 words
A structure according to claim 2 further comprising: an electrical connector mounted on said transducer housing; and said means for exerting force in a horizontal direction comprising an hydraulic press.
References Cited (Backward Citations)
US2628335A
Cited
US2918651A
Cited
US3079583A
Cited
US3167150A
Cited
US3292142A
Cited
US3683680A
Cited
US3864664A
Cited
US3913062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |