Patent US1889045A successfully refreshed from Google Patents.
Patent US5327397A successfully refreshed from Google Patents.
US5327397A
Expired / Lapsed
US
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Wideband, derivative-matched, continuous aperture acoustic transducer
Assignee: Charles Stark Draper Laboratory Inc
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Filing: 1993-05-27
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Granted: 1994-07-05
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Expires: 2013-05-27
Abstract
Abstract A wideband, derivative-matched, continuous aperture acoustic transducer includes a first sensor area having a predetermined spatial shading and a second sensor area having a spatial shading which is the spatial derivative of the spatial shading of the first area; the first and second spatial shaded areas are superimposed and co-extensive along the sensing axis.
Inventors
- 👤 Shawn E. Burke
- 👤 James E. Hubbard, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:34
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0207
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
75 words
A wideband, derivative-matched, continuous aperture acoustic transducer, comprising: a first sensor medium including a first sensor area having a predetermined spatial shaping; a second sensor medium including a second sensor area having a spatial shading which is the spatial derivative of the spatial shading of said first area; said first and second spatially shaded areas being superimposed and coextensive along the sensing axis; and a pair of electrodes about said first and second sensor mediums.
Claim 2
Dependent Claim
75 words
A wideband, derivative-matched, continuous aperture acoustic transducer, comprising: a first sensor medium including a first sensor area having a predetermined spatial shaping; a second sensor medium including a second sensor area having a spatial shading which is the spatial derivative of the spatial shading of said first area; said first and second spatially shaded areas being superimposed and coextensive along the sensing axis; and a pair of electrodes about said first and second sensor mediums.
Claim 3
Dependent Claim
24 words
The wideband, derivative-matched, continuous aperture acoustic transducer of claim 1 in which said first and second sensor areas are defined by a said electrode.
Claim 4
Dependent Claim
56 words
A wideband, derivative-matched, continuous aperture acoustic transducer, comprising: a first triangular sensor area having a predetermined spatial shading; and a second rectangular sensor area having a spatial shading which is the spatial derivative of the spatial shading of said first area; said first and second spatially shaded areas being superimposed and coextensive along the sensing axis.
Claim 5
Dependent Claim
56 words
A wideband, derivative-matched, continuous aperture acoustic transducer, comprising: a first triangular sensor area having a predetermined spatial shading; and a second rectangular sensor area having a spatial shading which is the spatial derivative of the spatial shading of said first area; said first and second spatially shaded areas being superimposed and coextensive along the sensing axis.
Claim 6
Dependent Claim
56 words
A wideband, derivative-matched, continuous aperture acoustic transducer, comprising: a first sinusoidal sensor area having a predetermined spatial shading; and a second cosinusoidal sensor area having a spatial shading which is the spatial derivative of the spatial shading of said first area; said first and second spatially shaded areas being superimposed and coextensive along the sensing axis.
Claim 7
Dependent Claim
56 words
A wideband, derivative-matched, continuous aperture acoustic transducer, comprising: a first sinusoidal sensor area having a predetermined spatial shading; and a second cosinusoidal sensor area having a spatial shading which is the spatial derivative of the spatial shading of said first area; said first and second spatially shaded areas being superimposed and coextensive along the sensing axis.
Claim 8
Dependent Claim
74 words
A wideband, derivative-matched, continuous aperture acoustic transducer, comprising: a first sensor area having a predetermined spatial shading; a second sensor area having a spatial shading which is the spatial derivative of the spatial shading of said first area; said first and second spatially shaded areas being superimposed and coextensive along the sensing axis; and a third sensor area superimposed on the first and second sensor areas and having a plurality of independent sensor sections.
Claim 9
Dependent Claim
74 words
A wideband, derivative-matched, continuous aperture acoustic transducer, comprising: a first sensor area having a predetermined spatial shading; a second sensor area having a spatial shading which is the spatial derivative of the spatial shading of said first area; said first and second spatially shaded areas being superimposed and coextensive along the sensing axis; and a third sensor area superimposed on the first and second sensor areas and having a plurality of independent sensor sections.
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) | 1997-07-04 | 1998-01-03 | 1998-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-04 | 2002-01-03 | 2002-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-04 | 2006-01-03 | 2006-07-05 | $7700.00 | Window Closed / Lapsed |