US4684328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic pump
Assignee: Piezo Electric Products Inc
•
Filing: 1986-01-22
•
Granted: 1987-08-04
•
Expires: 2006-01-22
Abstract
Abstract An acoustic pump including a resonant member having low internal damping and asymmetrically tapered to a thin edge; a piezoelectric driver mounted on the resonant member; and means for applying an alternating voltage to the piezoelectric driver in the resonant range of the resonant member for vibrating the resonant member and pumping fluid away from the thin edge.
Inventors
- 👤 Donald Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:00
CPC Classifications
F; F04; F04D; F04D33/00
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
60 words
An ultrasonic pump comprising: a resonant member having low internal damping and asymmetrically tapered to a thin edge; a driver mounted on said resonant member; and means for applying an alternating voltage to said driver in the resonant range of said resonant member for vibrating said resonant member in an open node line pattern which intesects with said thin edge.
Claim 2
Dependent Claim
60 words
An ultrasonic pump comprising: a resonant member having low internal damping and asymmetrically tapered to a thin edge; a driver mounted on said resonant member; and means for applying an alternating voltage to said driver in the resonant range of said resonant member for vibrating said resonant member in an open node line pattern which intesects with said thin edge.
Claim 3
Dependent Claim
14 words
The ultrasonic lump of claim 1 wherein said driver includes a thin piezoelectric element.
Claim 4
Dependent Claim
40 words
The ultrasonic pump of claim: 1 further including means for mounting a perforated plate adjacent said tapered surface at the position of dynamic equilibrium between the acoustic pressure away from the surface and the recoil pressure toward said tapered surface.
Claim 5
Dependent Claim
45 words
The ultrasonic of claim 3 further including means for loosely mounting said perforated plate adjacent said tapered surface to permit said plate to seek its position of dynamic equilibrium between the acoustic pressure away from the surface and the recoil pressure toward said tapered surface.
Claim 6
Dependent Claim
18 words
The ultrasonic pump of claim 1 in which said resonant member is asymmetrically tapered to two thin edges.
Claim 7
Dependent Claim
16 words
The ultrasonic pump of claim 1 in which said resonant member includes a generally planar section.
Claim 8
Dependent Claim
19 words
The ultransonic pump of claim 1 in which said driver is mounted on the bottom of said resonant member.
Claim 9
Dependent Claim
19 words
The ultransonic pump of claim 1 in which said driver is mounted on the top of said resonant member.
Claim 10
Dependent Claim
19 words
The ultrasonic pump of claim 1 in which said driver is mounted on the side of said resonant member.
Claim 11
Dependent Claim
26 words
The ultrasonic pump of claim 1 in which said means for applying includes an electrode on the opposite side of said driver from said resonant member.
Claim 12
Dependent Claim
18 words
The ultransonic pump of claim 1 in which said resonant member functions as an electrode for said driver
Claim 13
Dependent Claim
18 words
The ultrasonic pump of claim 3 in which said perforated plate includes approximately 270 holes per square inch.
Claim 14
Dependent Claim
20 words
The ultrasonic pump of claim 3 in which the perforations in said perforated plate are approximately 0.007-0.01 inch in diameter.
Claim 15
Dependent Claim
13 words
The ultrasonic pump of claim 4 in which said perforated plate is metal.
Claim 16
Dependent Claim
22 words
The ultransonic pump of claim 3 in which the perforations are formed with generally conical walls converging away from said tapered surface.
Claim 17
Dependent Claim
14 words
The ultrasonic pump of claim 3 in which said perforated plate is generally planar.
Claim 18
Dependent Claim
16 words
The ultrasonic pump of claim 3 in which said perforated plate is an inverted "V" channel.
Claim 19
Dependent Claim
18 words
The ultrasonic pump of claim 1 including means for mounting said resonant member remote form said thin edge.
Claim 20
Dependent Claim
23 words
The ultrasonic pump of claim 1 in which said node line pattern has two inflection points near its intersection with said thin edge.
Claim 21
Dependent Claim
15 words
The ultrasonic pump of claim 1 in which said node line pattern is generally circular.
Claim 22
Dependent Claim
38 words
The ultrasonic pump of claim 1 in which said node lines pattern has two inflection points near its intersection with said thin edge and means for mounting a perforated plate on said resonant member adjacent said inflection points.
Claim 23
Dependent Claim
18 words
The ultrasonic pump of claim 1 in which the Q-factor of said resonant member is greater than 300.
Claim 24
Dependent Claim
27 words
The ultrasonic pump of claim 1 in which said resonant member is made of material selected from the group consisting of tempered aluminum alloys and carbon steel.
Claim 25
Dependent Claim
104 words
An ultrasonic pump comprising: a resonant member having a Q-factor greater than 300 and including a first end, a second opposite end tapered to a thin edge, and at least one surface interconnecting said first and second ends; of a driver mounted on said interconnecting surface said resonant member remote from said thin edge; and means for applying an alternating voltage to said driver in the resonant range of said resonant member for vibrating said resonant member in an a generally circular open node line pattern which intersects with said thin edge and has two inflection points near its intersection with said thin edge.
Claim 26
Dependent Claim
104 words
An ultrasonic pump comprising: a resonant member having a Q-factor greater than 300 and including a first end, a second opposite end tapered to a thin edge, and at least one surface interconnecting said first and second ends; of a driver mounted on said interconnecting surface said resonant member remote from said thin edge; and means for applying an alternating voltage to said driver in the resonant range of said resonant member for vibrating said resonant member in an a generally circular open node line pattern which intersects with said thin edge and has two inflection points near its intersection with said thin edge.
Claim 27
Dependent Claim
23 words
The ultrasonic pump of claim 24 wherein said driver comprises a thin piezoelectric driver element distinct from and mounted on said resonant member.
Claim 28
Dependent Claim
40 words
The ultrasonic pump of claim 24 further including means for mounting a perforated plate above said tapered surface at the position of dynamic equilibrium between the acoustic pressure away from the surface and the recoil pressure toward said tapered surface.
Claim 29
Dependent Claim
27 words
The ultrasonic pump of claim 24 in which said resonant member is made of material selected from the group consisting of tempered aluminum alloys and carbon steel.
Claim 30
Dependent Claim
83 words
An ultrasonic blower comprising: a resonant member having low internal damping and asymmetrically tapered to a thin edge; a piezoelectric driver mounted on said resonant member; a perforated plate mounted on said resonant member spaced from said tapered surface; and means for applying an alternating voltage to said piezoelectric driver in the resonant range of said resonant member for vibrating said resonant member in an open node line pattern which intersects with said thin edge and pumps fluid away from said thin edge.
Claim 31
Dependent Claim
83 words
An ultrasonic blower comprising: a resonant member having low internal damping and asymmetrically tapered to a thin edge; a piezoelectric driver mounted on said resonant member; a perforated plate mounted on said resonant member spaced from said tapered surface; and means for applying an alternating voltage to said piezoelectric driver in the resonant range of said resonant member for vibrating said resonant member in an open node line pattern which intersects with said thin edge and pumps fluid away from said thin edge.
Claim 32
Dependent Claim
80 words
An ultrasonic pump comprising: a resonant member having low internal damping and asymmetrically tapered to a thin edge; a driver mounted on said resonant member; means for applying an alternating voltage to said driver in the resonant range of said resonant member for vibrating said resonant member; and means for mounting a perforated plate adjacent said tapered surface at the position of dynamic equilibrium between the acoustic pressure away from the surface and the recoil pressure toward said tapered surface.
Claim 33
Dependent Claim
80 words
An ultrasonic pump comprising: a resonant member having low internal damping and asymmetrically tapered to a thin edge; a driver mounted on said resonant member; means for applying an alternating voltage to said driver in the resonant range of said resonant member for vibrating said resonant member; and means for mounting a perforated plate adjacent said tapered surface at the position of dynamic equilibrium between the acoustic pressure away from the surface and the recoil pressure toward said tapered surface.
Claim 34
Dependent Claim
14 words
The ultrasonic pump of claim 29 wherein said driver includes a thin piezoelectric element.
Claim 35
Dependent Claim
18 words
The ultrasonic pump of claim 29 in which said resonant member is asymmetrically tapered to two thin edges.
Claim 36
Dependent Claim
16 words
The ultrasonic transducer of claim 29 in which said resonant member includes a generally planar section.
Claim 37
Dependent Claim
19 words
The ultrasonic pump of claim 29 in which said driver is mounted on the bottom of said resonant member.
Claim 38
Dependent Claim
19 words
The ultrasosnic pump of claim 29 in which said driver is mounted on the top of said resonant member.
Claim 39
Dependent Claim
19 words
The ultrasonic pump of claim 29 in which said driver is mounted on the side of said resonant member.
Claim 40
Dependent Claim
26 words
the ultrasonic pump of claim 29 in which said means for applying includes an electrode on the opposite side of said driver from said resonant member.
Claim 41
Dependent Claim
18 words
The ultrasonic transducer of claim 29 in which said resonant member functions as an electrode for said driver.
Claim 42
Dependent Claim
18 words
The ultrasonic pump of claim 29 in which said perforated plate includes approximately 270 holes per square inch.
Claim 43
Dependent Claim
20 words
The ultrasonic pump of claim 29 in which the perforations in said perforated plate are approximately 0.007-0.01 inch in diameter.
Claim 44
Dependent Claim
13 words
The ultrasonic pump of claim 29 in which said perforated palte is metal.
Claim 45
Dependent Claim
22 words
The ultrasonic transducer of claim 29 in which the perforations are formed with generally conical walls coverging away from said tapered surface.
Claim 46
Dependent Claim
14 words
The ultrasonic pump of claim 29 in which said perforated plate is generally planar.
Claim 47
Dependent Claim
16 words
The ultrasonic pump of claim 29 in which said perforated plate is an inverted "V" channel.
Claim 48
Dependent Claim
18 words
The ultrasoinc pump of claim 29 in which said resonant member is mounted remote from said thin edge.
Claim 49
Dependent Claim
27 words
The ultrasonic pump of claim 29 wherein said resonant member is made of a material selected from the group consisting of tempered aluminum alloys and carbon steel.
Claim 50
Dependent Claim
18 words
The ultrasonic pump of claim 29 in which the Q-factor of said resonant member is greater than 300.
Claim 51
Dependent Claim
86 words
An ultrasonic pump comprising: a resonant member having low internal damping and asymmetrically tapered to a thin edge; a driver mounted on said resonant member; means for applying an alternating voltage to said driver in the resonant range of said resonant member for vibrating said resonant member; and means for loosely mounting a perforated plate adjacent said tapered surface to permit said plate to seek its position of dynamic equilibrium between the acoustic pressure away from the surface and the recoil pressure toward said tapered surface.
Claim 52
Dependent Claim
86 words
An ultrasonic pump comprising: a resonant member having low internal damping and asymmetrically tapered to a thin edge; a driver mounted on said resonant member; means for applying an alternating voltage to said driver in the resonant range of said resonant member for vibrating said resonant member; and means for loosely mounting a perforated plate adjacent said tapered surface to permit said plate to seek its position of dynamic equilibrium between the acoustic pressure away from the surface and the recoil pressure toward said tapered surface.
References Cited (Backward Citations)
FR477143A
Cited
CH289372A
Cited
US2932494A
Cited
US3040976A
Cited
GB2044705A
Cited
GB2049594A
Cited
WO1980002445A1
Cited
GB2071924A
Cited
US4498851A
Cited
US4342936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |