US3738574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for atomizing fluids with a piezoelectrically stimulated oscillator system
Assignee: Siemens AG
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Filing: 1971-06-30
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Granted: 1973-06-12
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Expires: 1991-06-30
Abstract
Abstract Apparatus for atomizing liquids having a piezoelectric oscillator system which includes an AC voltage stimulated piezoelectric transducer mechanically coupled to a vibrator plate for inducing bending vibrations therein, a fluid tank and a pump for delivering fluid to the vibrating plate which is disposed at an oblique angle with respect to the force of gravity above the tank, a wick extending from the tank with one end thereof in proximity to the lower edge of the vibrating plate to aid in diverting excess liquid from the plate, and means for controlling operation of the fluid delivery system for deactivating the same during periods when the oscillator system is inactive.
Inventors
- 👤 M Guntersdorfer
- 👤 W Heywang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:25
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B05; B05B; B05B17/00; B05B17/04; B05B17/06; B05B17/0607; B05B17/0623; B05B17/0653; B05B17/0676; B05B17/0684; B06B1/0207; B06B1/0223; B06B1/0238; B06B1/0246; B06B1/0261; B06B2201/00; B06B2201/50; B06B2201/55
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
Apparatus for atomizing liquids, comprising: a piezoelectric oscillator system for energization by an AC voltage, said oscillator system comprising a plate to be stimulated to bending vibrations and a coupling oscillator connected to said plate and including a piezoelectric transducer having input electrodes and operable to provide bending vibrations in response to the AC voltage; a fluid reservoir below said oscillator system for holding fluid to be atomized; a fluid conveyor associated with said reservoir operable to deliver a flow of the fluid from said reservoir to said plate; and control means connected between said oscillator system and said fluid conveyor for sensing oscillations and controlling the energization of said fluid conveyor so that fluid delivery is terminated during intervals when operation of said oscillator system is suspended.
Claim 2
Dependent Claim
128 words
Apparatus for atomizing liquids, comprising: a piezoelectric oscillator system for energization by an AC voltage, said oscillator system comprising a plate to be stimulated to bending vibrations and a coupling oscillator connected to said plate and including a piezoelectric transducer having input electrodes and operable to provide bending vibrations in response to the AC voltage; a fluid reservoir below said oscillator system for holding fluid to be atomized; a fluid conveyor associated with said reservoir operable to deliver a flow of the fluid from said reservoir to said plate; and control means connected between said oscillator system and said fluid conveyor for sensing oscillations and controlling the energization of said fluid conveyor so that fluid delivery is terminated during intervals when operation of said oscillator system is suspended.
Claim 3
Dependent Claim
33 words
The atomizing apparatus of claim 1, wherein said plate is disposed over said reservoir at an oblique angle with respect to the force of gravity whereby fluid not atomized returns to said reservoir.
Claim 4
Dependent Claim
34 words
The atomizing apparatus of claim 1, comprising fluid diversion means disposed in proximity to said plate and extending into said reservoir to divert excessive quantities of the fluid from said plate to said reservoir.
Claim 5
Dependent Claim
46 words
The atomizing apparatus of claim 1, wherein said oscillator system includes means for generating the AC voltage including a voltage tap electrode mounted on said piezoelectric transducer for providing a feedback voltage, and a feedback amplification circuit connected between said tap electrode and said input electrodes.
Claim 6
Dependent Claim
27 words
The atomizing apparatus of claim 4, wherein said feedback amplification circuit includes phase shifting means operable to provide substantially a 90* phase shift of the feedback voltage.
Claim 7
Dependent Claim
58 words
The apparatus according to claim 4, wherein said control means includes an input circuit connected to said feedback amplification circuit for receiving the amplified feedback voltage, means for rectifying the amplified feedback voltage, and means connected to said rectifying means for effecting operation of said fluid conveyor in response to a rectified voltage greater than a predetermined magnitude.
Claim 8
Dependent Claim
162 words
Apparatus for atomizing liquids, comprising: a piezoelectric oscillator system for energization by an AC voltage, said oscillator system comprising a plate to be stimulated to bending vibrations and a coupling oscillator connected to said plate and including a piezoelectric transduceR having input electrodes and operable to provide bending vibrations in response to the AC voltage; a fluid reservoir below said oscillator system for holding fluid to be atomized; a fluid conveyor associated with said reservoir operable to deliver a flow of the fluid from said reservoir to said plate; fluid diversion means disposed in proximity to said plate and extending into said reservoir to divert excessive quantities of the fluid from said plate to said reservoir, said fluid diversion means including a wick; and control means connected between said oscillator system and said fluid conveyor for sensing oscillations and controlling the energization of said fluid conveyor so that fluid delivery is terminated during intervals when operation of said oscillator system is suspended.
Claim 9
Dependent Claim
162 words
Apparatus for atomizing liquids, comprising: a piezoelectric oscillator system for energization by an AC voltage, said oscillator system comprising a plate to be stimulated to bending vibrations and a coupling oscillator connected to said plate and including a piezoelectric transduceR having input electrodes and operable to provide bending vibrations in response to the AC voltage; a fluid reservoir below said oscillator system for holding fluid to be atomized; a fluid conveyor associated with said reservoir operable to deliver a flow of the fluid from said reservoir to said plate; fluid diversion means disposed in proximity to said plate and extending into said reservoir to divert excessive quantities of the fluid from said plate to said reservoir, said fluid diversion means including a wick; and control means connected between said oscillator system and said fluid conveyor for sensing oscillations and controlling the energization of said fluid conveyor so that fluid delivery is terminated during intervals when operation of said oscillator system is suspended.
Claim 10
Dependent Claim
23 words
The atomizing apparatus of claim 1, wherein said oscillator system comprises a frustum-shaped member having said plate and said piezoelectric transducer mounted thereon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |