US4319155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nebulization control system for a piezoelectric ultrasonic nebulizer
Assignee: Omron Corp
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Filing: 1979-12-11
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Granted: 1982-03-09
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Expires: 1999-12-11
Abstract
Abstract A nebulization control system for an ultrasonic nebulizer comprising a variable pulse oscillating circuit, an ultrasonic vibrating circuit and an ultrasonic vibrator is described. The ultrasonic vibrator is caused to vibrate alternatingly between a high level which is sufficient to nebulize a fluid and a low level which is insufficient to nebulize the same. The ratio of duration of the high level to the low level and/or the amplitude of vibration at the high level is variable. This arrangement permits a precise control of nebulization quantity and assists in the production of a fine, uniform mist of fluid.
Inventors
- 👤 Hideharu Nakai
- 👤 Isao Kai
- 👤 Hirohito Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:52
CPC Classifications
B; B05; B05B; B05B17/00; B05B17/04; B05B17/06; B05B17/0607; Y; Y10; Y10S; Y10S261/00; Y10S261/48
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
A nebulization control system for an ultrasonic nebulizer, comprising: a variable pulse oscillating circuit, an ultrasonic vibrating circuit, the vibration amplitude of which depends upon the output of said variable pulse oscillating circuit, and an ultrasonic vibrator which is energized by the output of said ultrasonic vibrating circuit, wherein said ultrasonic vibrator is caused to vibrate in alternation between a predetermined high amplitude level which is sufficient to nebulize fluid and a predetermined low amplitude level, greater than zero, which is at or near the maximum amplitude at which nebulization will not take place.
Claim 2
Dependent Claim
94 words
A nebulization control system for an ultrasonic nebulizer, comprising: a variable pulse oscillating circuit, an ultrasonic vibrating circuit, the vibration amplitude of which depends upon the output of said variable pulse oscillating circuit, and an ultrasonic vibrator which is energized by the output of said ultrasonic vibrating circuit, wherein said ultrasonic vibrator is caused to vibrate in alternation between a predetermined high amplitude level which is sufficient to nebulize fluid and a predetermined low amplitude level, greater than zero, which is at or near the maximum amplitude at which nebulization will not take place.
Claim 3
Dependent Claim
32 words
A nebulization control system for an ultrasonic nebulizer according to claim 1, wherein the ratio of the duration of vibration of said high level to that of said low level is variable.
Claim 4
Dependent Claim
23 words
A nebulization control system for an ultrasonic nebulizer according to claim 1, wherein the amplitude of vibration at said high level is variable.
Claim 5
Dependent Claim
36 words
A nebulization control system for an ultrasonic nebulizer according to claims 1, 2, or 3, wherein the difference in amplitude between the high level and the low level is chosen to produce a predetermined nebulization quantity.
Claim 6
Dependent Claim
26 words
A nebulization control system for an ultrasonic nebulizer according to claims 1, 2, or 3, wherein the low level amplitude is one-third the high level amplitude.
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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) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |