US3769615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapped praetersonic bulk delay line
Assignee: Westinghouse Electric Corp
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Filing: 1972-06-28
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Granted: 1973-10-30
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Expires: 1992-06-28
Abstract
Abstract Praetersonic delay line means comprising transducer means for converting input electromagnetic wave energy to bulk sonic wave energy and for causing the bulk wave energy to traverse a body of piezoelectric material, together with electromagnetic antenna means positioned along the body at a point removed from the transducer means for converting the bulk sonic wave energy back to output electromagnetic wave energy which is delayed with respect to the input wave energy by an amount equal to the time required for the bulk sonic wave energy to travel from the transducer means to the antenna means.
Inventors
- 👤 Klerk J De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:54
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/125
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
Delay line means comprising transducer means for converting input electromagnetic wave energy to bulk compressional wave energy and for causing said bulk wave energy to traverse a body of piezoelectric material, and electromagnetic antenna means positioned along said body at a point removed from the transducer means for converting said bulk compressional wave energy back to output electromagnetic wave energy which is delayed with respect to the input wave energy, said antenna means comprising at least two parallel line electrodes on at least one face of said body.
Claim 2
Dependent Claim
88 words
Delay line means comprising transducer means for converting input electromagnetic wave energy to bulk compressional wave energy and for causing said bulk wave energy to traverse a body of piezoelectric material, and electromagnetic antenna means positioned along said body at a point removed from the transducer means for converting said bulk compressional wave energy back to output electromagnetic wave energy which is delayed with respect to the input wave energy, said antenna means comprising at least two parallel line electrodes on at least one face of said body.
Claim 3
Dependent Claim
24 words
The delay line means of claim 1 wherein said bulk compressional wave energy traverses said body of piezoelectric material along a piezoelectrically active direction.
Claim 4
Dependent Claim
41 words
The delay line means of claim 1 wherein said antenna means comprises a loop extending around said body of piezoelectric material in a plane extending transverse to the direction of movement of said bulk compressional wave energy through the piezoelectric body.
Claim 5
Dependent Claim
14 words
The delay line means of claim 1 wherein said antenna means comprises interleaved grids.
Claim 6
Dependent Claim
34 words
The delay line means of claim 4 wherein said interleaved grids are such as to produce output electromagnetic wave energy having a time delay dependent upon the frequency of the input electromagnetic wave energy.
Claim 7
Dependent Claim
118 words
Delay line means comprising a body of piezoelectric crystal material having a piezo-electrically active direction extending from one side of the body to the other, a piezoelectric transducer in contact with said one side of the body for converting electromagnetic wave energy to bulk compressional wave energy and for causing said bulk compressional wave energy to traverse the body along said active direction, and electromagnetic antenna means on at least one side of the body for converting said bulk compressional wave energy back to electromagnetic wave energy which is delayed with respect to the electromagnetic wave energy applied to said transducer, said antenna means comprising at least two parallel line electrodes on said one side of the body.
Claim 8
Dependent Claim
118 words
Delay line means comprising a body of piezoelectric crystal material having a piezo-electrically active direction extending from one side of the body to the other, a piezoelectric transducer in contact with said one side of the body for converting electromagnetic wave energy to bulk compressional wave energy and for causing said bulk compressional wave energy to traverse the body along said active direction, and electromagnetic antenna means on at least one side of the body for converting said bulk compressional wave energy back to electromagnetic wave energy which is delayed with respect to the electromagnetic wave energy applied to said transducer, said antenna means comprising at least two parallel line electrodes on said one side of the body.
Claim 9
Dependent Claim
19 words
The delay line means of claim 6 wherein said body of piezoelectric crystal material is deposited on a substrate.
Claim 10
Dependent Claim
22 words
The delay line means of claim 6 including an acoustic absorber at the end of said piezoelectric body opposite said piezoelectric transducer.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |