Patent US3879698A successfully refreshed from Google Patents.
US3879698A
Expired / Lapsed
US
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Unipolar acoustic pulse generator apparatus
Assignee: Edo Corp
•
Filing: 1973-04-26
•
Granted: 1975-04-22
•
Expires: 1993-04-26
Abstract
Abstract In apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to generate unipolar accoustic pulses in an acoustic medium, the dimensions of the radiating face of the transducer or of an array of radiating transducer faces are chosen to simplify the response of the transducers, thereby simplifying the required transducer driving signals and the apparatus required to generate those signals.
Inventors
- 👤 Perry Arnold Pepper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:28
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B06B1/0215; G; G10; G10K; G10K15/00; G10K15/04; G10K15/043; B06B2201/00; B06B2201/50; B06B2201/55
Claims Analysis
Total Claims: 62
Claim 1
Independent Claim
73 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to and said radiating face having maximum dimenion z, characterized in that to is substantially equal to the quotient (z/cw), means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 2
Dependent Claim
73 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to and said radiating face having maximum dimenion z, characterized in that to is substantially equal to the quotient (z/cw), means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 3
Dependent Claim
137 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to and said radiating face having maximum dimension z, characterized in that to is substantially equal to the quotient (z/cw), said radiating face of said transducer displacing from a rest position to maximum displacement during during a first interval of time to and returning from maximum displacement to said rest position during a second subsequent interval of time to, and means for applying to said transducer an electrical signal including a signal component characterized by a first signal pulse at the start of said first time interval and a second signal pulse at the end of said second time interval.
Claim 4
Dependent Claim
137 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to and said radiating face having maximum dimension z, characterized in that to is substantially equal to the quotient (z/cw), said radiating face of said transducer displacing from a rest position to maximum displacement during during a first interval of time to and returning from maximum displacement to said rest position during a second subsequent interval of time to, and means for applying to said transducer an electrical signal including a signal component characterized by a first signal pulse at the start of said first time interval and a second signal pulse at the end of said second time interval.
Claim 5
Dependent Claim
24 words
The apparatus defined in claim 2 wherein each of said signal pulses is characterized by a substantially instantaneous rise time followed by gradual decay.
Claim 6
Dependent Claim
46 words
The apparatus defined in claim 3 wherein the rise time of said first signal pulse is substantially concurrent with the start of said first time interval and the rise time of said second signal pulse is substantially concurrent with the end of said second time interval.
Claim 7
Dependent Claim
20 words
The apparatus defined in claim 4 wherein the duration of each of said signal pulses is substantially equal to to.
Claim 8
Dependent Claim
31 words
The apparatus defined in claim 5 wherein said electrical signal component is further characterized by a predetermined reference signal level before said first signal pulse and after said second signal pulse.
Claim 9
Dependent Claim
27 words
The apparatus defined in claim 6 wherein the peaks of both of said signal pulses are of a first polarity relative to said predetermined reference signal level.
Claim 10
Dependent Claim
33 words
The apparatus defined in claim 7 wherein said electrical signal component is further characterized by a polarity opposite said first polarity during the interval of time between said first and second signal pulses.
Claim 11
Dependent Claim
20 words
The apparatus defined in claim 8 wherein the radiating face of said transducer is a circular surface of diameter z.
Claim 12
Dependent Claim
23 words
The apparatus defined in claim 9 wherein said transducer is a cylinder, one end of which is the radiating face of said transducer.
Claim 13
Dependent Claim
19 words
The apparatus defined in claim 8 wherein the radiating face of said transducer is a rectangle of diagonal z.
Claim 14
Dependent Claim
20 words
The apparatus defined in claim 8 wherein the radiating face of said transducer is a triangle having longest side z.
Claim 15
Dependent Claim
20 words
The apparatus defined in claim 8 wherein the radiating face of said transducer is an ellipse having major axis z.
Claim 16
Dependent Claim
89 words
The apparatus defined in claim 2 wherein said means for applying comprises: means for generating a trigger signal; a plurality of shaped pulse generating channels responsive to said trigger signal, each of said channels comprising means for delaying said trigger signal, means responsive to the delayed trigger signal for generating a rectangular pulse of predetermined amplitude and duration, and means for shaping said rectangular pulse to produce a shaped output pulse; and means for summing the shaped output pulses of each of said channels to produce said electrical signal.
Claim 17
Dependent Claim
171 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to and said radiating face having a maximum dimension z, characterized in that to is substantially equal to the quotient (z/cw), said transducer being characterized by an acoustic velocity c, wherein the dimension L of said transducer normal to said radiating face bears substantially the same proportional relation to c as z bears to cw, and wherein the radiating face of said transducer displaces from a rest position to maximum displacement during a first interval of time to and returns from maximum displacement to said rest during a second subsequent interval of time to, means for applying to said transducer an electrical signal including a signal component characterized by a first signal pulse at the start of said first time interval and a second signal pulse at the end of said second time interval.
Claim 18
Dependent Claim
171 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to and said radiating face having a maximum dimension z, characterized in that to is substantially equal to the quotient (z/cw), said transducer being characterized by an acoustic velocity c, wherein the dimension L of said transducer normal to said radiating face bears substantially the same proportional relation to c as z bears to cw, and wherein the radiating face of said transducer displaces from a rest position to maximum displacement during a first interval of time to and returns from maximum displacement to said rest during a second subsequent interval of time to, means for applying to said transducer an electrical signal including a signal component characterized by a first signal pulse at the start of said first time interval and a second signal pulse at the end of said second time interval.
Claim 19
Dependent Claim
24 words
The apparatus defined in claim 15 wherein each of said signal pulses is characterized by a substantially instantaneous rise time followed by gradual decay.
Claim 20
Dependent Claim
45 words
The apparatus defined in claim 16 wherein the rise time of said first pulse is substantially concurrent with the start of said first time interval and the rise time of said second signal pulse is substantially concurrent with the end of said second time interval.
Claim 21
Dependent Claim
20 words
The apparatus defined in claim 17 wherein the duration of each of said signal pulses is substantially equal to to.
Claim 22
Dependent Claim
31 words
The apparatus defined in claim 18 wherein said electrical signal component is further characterized by a predetermined reference signal level before said first signal pulse and after said second signal pulse.
Claim 23
Dependent Claim
26 words
The apparatus defined in claim 19 wherein the peaks of both of said signal pulses are the first polarity relative to said predetermined reference signal level.
Claim 24
Dependent Claim
33 words
The apparatus defined in claim 20 wherein said electrical signal component is further characterized by a polarity opposite said first polarity during the interval of time between said first and second signal pulses.
Claim 25
Dependent Claim
20 words
The apparatus defined in claim 21 wherein the radiating face of said transducer is a circular surface of diameter z.
Claim 26
Dependent Claim
26 words
The apparatus defined in claim 22 wherein said transducer is a cylinder of length L, one end of which is the radiating face of said transducer.
Claim 27
Dependent Claim
89 words
The apparatus defined in claim 15 wherein said means for applying comprises: means for generating a trigger signal; a plurality of shaped pulse generating channels responsive to said trigger signal, Each of said channels comprising means for delaying said trigger signal, means responsive to the delayed trigger signal for generating a rectangular pulse of predetermined amplitude and duration, and means for shaping said rectangular pulse to produce a shaped output pulse; and means for summing the shaped output pulses of each of said channels to produce said electrical signal.
Claim 28
Dependent Claim
87 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium having an acoustic velocity cw, the radiating face of said transducer having maximum dimension z and said transducer having an acoustic velocity c and a dimension L normal to said radiating face, wherein the ratio of z to cw is substantially equal to the ratio of L to c, means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 29
Dependent Claim
87 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium having an acoustic velocity cw, the radiating face of said transducer having maximum dimension z and said transducer having an acoustic velocity c and a dimension L normal to said radiating face, wherein the ratio of z to cw is substantially equal to the ratio of L to c, means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 30
Dependent Claim
96 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium characterized by an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to, the radiating face of said transducer having maximum dimension z, and said transducer having an acoustic velocity c and a dimension L normal to said radiating face, wherein to is substantially equal to the quotient (L/c) and to the quotient (z/cw), means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 31
Dependent Claim
96 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in a medium characterized by an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to, the radiating face of said transducer having maximum dimension z, and said transducer having an acoustic velocity c and a dimension L normal to said radiating face, wherein to is substantially equal to the quotient (L/c) and to the quotient (z/cw), means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 32
Dependent Claim
78 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in an acoustic medium, said unipolar displacement having a half pulse duration time parameter to, characterized in that to is substantially equal to the time required for an acoustic wave to traverse the maximum dimension of the radiating face through the acoustic medium, means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 33
Dependent Claim
78 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in an acoustic medium, said unipolar displacement having a half pulse duration time parameter to, characterized in that to is substantially equal to the time required for an acoustic wave to traverse the maximum dimension of the radiating face through the acoustic medium, means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 34
Dependent Claim
116 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in an acoustic medium, said transducer having a non-radiating face opposite said radiating face, said unipolar displacement having a half pulse duration time parameter to, characterized in that to is substantially equal to the time required for an acoustic wave to travel through the transducer from one face to the other and further characterized in that to is substantially equal to the time required for an acoustic wave to traverse the maximum dimension of the radiating face through the acoustic medium, means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 35
Dependent Claim
116 words
Apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to produce an acoustic signal in an acoustic medium, said transducer having a non-radiating face opposite said radiating face, said unipolar displacement having a half pulse duration time parameter to, characterized in that to is substantially equal to the time required for an acoustic wave to travel through the transducer from one face to the other and further characterized in that to is substantially equal to the time required for an acoustic wave to traverse the maximum dimension of the radiating face through the acoustic medium, means for generating a signal waveform, and means for applying said signal waveform to said transducer.
Claim 36
Dependent Claim
82 words
Apparatus for generating a unipolar displacement of the radiating faces of a plurality of electroacoustic transducers to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z characterized in that to is substantially equal to the quotient (z/cw), means for generating a signal waveform, and means for applying said signal waveform to said transducers.
Claim 37
Dependent Claim
82 words
Apparatus for generating a unipolar displacement of the radiating faces of a plurality of electroacoustic transducers to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z characterized in that to is substantially equal to the quotient (z/cw), means for generating a signal waveform, and means for applying said signal waveform to said transducers.
Claim 38
Dependent Claim
45 words
The apparatus defined in claim 29 wherein the radiating faces of said transducers displace from a rest position to maximum displacement during a first interval of time to and return from maximum displacement to said rest position during a second subsequent interval of time to.
Claim 39
Dependent Claim
46 words
The apparatus defined in claim 29 wherein each of said transducers is characterized by an acoustic velocity c and wherein the dimension L oF each of said transducers normal to its radiating face bears substantially the same proportional relation to c as z bears to cw.
Claim 40
Dependent Claim
45 words
The apparatus defined in claim 31 wherein the radiating faces of said transducers displace from a rest position to maximum displacement during a first interval of time to and return from maximum displacement to said rest position during a second subsequent interval of time to.
Claim 41
Dependent Claim
47 words
The apparatus defined in claim 32 comprising means for applying to said transducers an electrical signal including a signal component characterized by a first signal pulse at the start of said first time interval and a second signal pulse at the end of said second time interval.
Claim 42
Dependent Claim
24 words
The apparatus defined in claim 33 wherein each of said signal pulses is characterized by a substantially instantaneous rise time followed by gradual decay.
Claim 43
Dependent Claim
46 words
The apparatus defined in claim 34 wherein the rise time of said first signal pulse is substantially concurrent with the start of said first time interval and the rise time of said second signal pulse is substantially concurrent with the end of said second time interval.
Claim 44
Dependent Claim
20 words
The apparatus defined in claim 35 wherein the duration of each of said signal pulses is substantially equal to to.
Claim 45
Dependent Claim
31 words
The apparatus defined in claim 36 wherein said electrical signal component is further characterized by a predetermined reference signal level before said first signal pulse and after said second signal pulse.
Claim 46
Dependent Claim
27 words
The apparatus defined in claim 37 wherein the peaks of both of said signal pulses are of a first polarity relative to said predetermined reference signal level.
Claim 47
Dependent Claim
33 words
The apparatus defined in claim 38 wherein said electrical signal component is further characterized by a polarity opposite said first polarity during the interval of time between said first and second signal pulses.
Claim 48
Dependent Claim
82 words
The apparatus defined in claim 33 wherein said means for applying comprises: means for generating a trigger signal; a plurality of shaped pulse generating channels responsive to said trigger signal, each of said channels comprising means for delaying said trigger signal for generating a rectangular pulse of predetermined amplitude and duration, and means for shaping said rectangular pulse to produce a shaped output pulse; and means for summing the shaped output pulses of each of said channels to produce said electrical signal.
Claim 49
Dependent Claim
103 words
Apparatus for producing a unipolar displacement of the radiating faces of a plurality of electroacoustic transducers to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z, each of said transducers having an acoustic velocity c and a dimension L perpendicular to its radiating face, wherein to is substantially equal to the quotient (L/c) and to the quotient (z/cw), means for generating a signal waveform, and means for applying said signal waveform to said transducers.
Claim 50
Dependent Claim
103 words
Apparatus for producing a unipolar displacement of the radiating faces of a plurality of electroacoustic transducers to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z, each of said transducers having an acoustic velocity c and a dimension L perpendicular to its radiating face, wherein to is substantially equal to the quotient (L/c) and to the quotient (z/cw), means for generating a signal waveform, and means for applying said signal waveform to said transducers.
Claim 51
Dependent Claim
135 words
Apparatus for producing a unipolar displacement of the radiating faces of a plurality of electroacoustic transducers to produce an acoustic signal in an acoustic medium, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z, each of said transducers having a non-radiating face opposite said radiating face, characterized in that to is substantially equal to the time required for an acoustic wave to propagate through each of said transducers from one of its faces to the other and further characterized in that to is substantially equal to the time required for an acoustic wave to propagate a distance z in the acoustic medium, means for generating a signal waveform, And means for applying said signal waveform to said transducers.
Claim 52
Dependent Claim
135 words
Apparatus for producing a unipolar displacement of the radiating faces of a plurality of electroacoustic transducers to produce an acoustic signal in an acoustic medium, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z, each of said transducers having a non-radiating face opposite said radiating face, characterized in that to is substantially equal to the time required for an acoustic wave to propagate through each of said transducers from one of its faces to the other and further characterized in that to is substantially equal to the time required for an acoustic wave to propagate a distance z in the acoustic medium, means for generating a signal waveform, And means for applying said signal waveform to said transducers.
Claim 53
Dependent Claim
135 words
Apparatus for producing a unipolar displacement of the radiating faces of a plurality of electroacoustic transducers to produce an acoustic signal in an acoustic medium, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z, each of said transducers having a non-radiating face opposite said radiating face, characterized in that to is substantially equal to the time required for an acoustic wave to propagate through each of said transducers from one of its faces to the other and further characterized in that to is substantially equal to the time required for an acoustic wave to propagate a distance z in the acoustic medium, means for generating a signal waveform, And means for applying said signal waveform to said transducers.
Claim 54
Dependent Claim
135 words
Apparatus for producing a unipolar displacement of the radiating faces of a plurality of electroacoustic transducers to produce an acoustic signal in an acoustic medium, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z, each of said transducers having a non-radiating face opposite said radiating face, characterized in that to is substantially equal to the time required for an acoustic wave to propagate through each of said transducers from one of its faces to the other and further characterized in that to is substantially equal to the time required for an acoustic wave to propagate a distance z in the acoustic medium, means for generating a signal waveform, And means for applying said signal waveform to said transducers.
Claim 55
Dependent Claim
146 words
Apparatus for generating a unipolar acoustic displacement of the radiating faces of a plurality of electroacoustic transducers, to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z characterized in that to is substantially equal to the quotient (z/cw), the radiating faces of said transducers displacing from a rest position to maximum displacement during a first interval of time to and returning from maximum displacement to said rest position during a second subsequent interval of time to, and means for applying to said transducers an electrical signal including a signal component characterized by a first signal pulse at the start of said first time interval and a second signal pulse at the end of said second time interval.
Claim 56
Dependent Claim
146 words
Apparatus for generating a unipolar acoustic displacement of the radiating faces of a plurality of electroacoustic transducers, to produce an acoustic signal in a medium having an acoustic velocity cw, said unipolar displacement having a half pulse duration time parameter to, the radiating faces of said transducers forming a coplanar array having a maximum dimension z characterized in that to is substantially equal to the quotient (z/cw), the radiating faces of said transducers displacing from a rest position to maximum displacement during a first interval of time to and returning from maximum displacement to said rest position during a second subsequent interval of time to, and means for applying to said transducers an electrical signal including a signal component characterized by a first signal pulse at the start of said first time interval and a second signal pulse at the end of said second time interval.
Claim 57
Dependent Claim
24 words
The apparatus defined in claim 43 wherein each of said signal pulses is characterized by a substantially instantaneous rise time followed by gradual decay.
Claim 58
Dependent Claim
46 words
The apparatus defined in claim 44 wherein the rise time of said first signal pulse is substantially concurrent with the start of said first time interval and the rise time of said second signal pulse is substantially concurrent with the end of said second time interval.
Claim 59
Dependent Claim
20 words
The apparatus defined in claim 45 wherein the duration of each of said signal pulses is substantially equal to to.
Claim 60
Dependent Claim
31 words
The apparatus defined in claim 46 wherein said electrical signal component is further characterized by a predetermined reference signal level before said first signal pulse and after said second signal pulse.
Claim 61
Dependent Claim
27 words
The apparatus defined in claim 47 wherein the peaks of both of said signal pulses are of a first polarity relative to said predetermined reference signal level.
Claim 62
Dependent Claim
33 words
The apparatus defined in claim 48 wherein said electrical signal component is further characterized by a polarity opposite said first polarity during the interval of time between said first and second signal pulses.
References Cited (Backward Citations)
US3399314A
Cited
US3715710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |