US3881164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross array ultrasonic transducer
Assignee: Australian Government
•
Filing: 1973-09-13
•
Granted: 1975-04-29
•
Expires: 1993-09-13
Abstract
Abstract Apparatus for ultrasonic examination of objects, particularly in medical diagnostic examination, is comprised of a first phased array transducer capable of focusing the beam of pulses of ultrasonic energy in the longitudinal plane of the transducer positioned transverse to the longitudinal plane of the first transducer. The second transducer is capable of being focused in the same plane as the first transducer.
Inventors
- 👤 George Kossoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:10
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/42; A61B8/4272; A61B8/4281; A61B8/13; A61B8/14; A61B8/145; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0622
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
Apparatus for the ultrasonic examination of an object comprising: a first phased array transducer comprising a first plurality of elements; a first transducer energizing means for progressively energizing selected ones of said elements to form a bEam of pulses of ultrasonic energy directed into the object and focused in the longitudinal plane of the transducer; a second phased array transducer comprising a second plurality of elements different in size and quantity from the elements in said first plurality of elements positioned with its longitudinal plane transverse to the longitudinal plane of said first phased array transducer; a second transducer energizing means for progressively energizing selective ones of said second plurality of elements to focus said second phased array transducer in the longitudinal plane of said first phased array transducer.
Claim 2
Dependent Claim
129 words
Apparatus for the ultrasonic examination of an object comprising: a first phased array transducer comprising a first plurality of elements; a first transducer energizing means for progressively energizing selected ones of said elements to form a bEam of pulses of ultrasonic energy directed into the object and focused in the longitudinal plane of the transducer; a second phased array transducer comprising a second plurality of elements different in size and quantity from the elements in said first plurality of elements positioned with its longitudinal plane transverse to the longitudinal plane of said first phased array transducer; a second transducer energizing means for progressively energizing selective ones of said second plurality of elements to focus said second phased array transducer in the longitudinal plane of said first phased array transducer.
Claim 3
Dependent Claim
19 words
The apparatus as claimed in claim 1, wherein said first and second plurality of elements comprise narrow rectangular elements.
Claim 4
Dependent Claim
30 words
The apparatus as claimed in claim 1, wherein the elements of said first plurality of elements are narrower and more numerous than the elements of said second plurality of elements.
Claim 5
Dependent Claim
37 words
Apparatus as claimed in claim 2, characterised in that the length dimension of said elements of said second phased array transducer is chosen to provide the focusing in the longitudinal plane of said first phased array transducer.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |