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US5076854A
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US
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Multi-frequency ultrasonic cleaning method and apparatus
Assignee: Honda Electronics Co Ltd
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Filing: 1989-11-13
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Granted: 1991-12-31
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Expires: 2009-11-13
Abstract
Abstract When output signals of different multi-frequencies are supplied to one vibrator every short time interval, ultrasonic waves generating from the vibrator having continuing frequencies in which frequencies between separated resonance frequencies are supplemented. Therefore, the cleaning effect is improved by the ultrasonic waves.
Inventors
- 👤 Keisuke Honda
- 👤 Hideo Kosaka
- 👤 Toshiaki Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:58
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12; B06B2201/00; B06B2201/70; B06B2201/71
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A multi-frequency ultrasonic method for cleaning a surface comprising outputting signals having two or more different frequencies switched every 0.01 to 20 milliseconds and which are supplied to a vibrator, and the ultrasonic waves of continuing frequencies comprising said two or more frequencies and other frequencies which are emitted from the vibrator, whereby the surface to be cleaned is effectively cleaned by the ultrasonic waves.
Claim 2
Dependent Claim
65 words
A multi-frequency ultrasonic method for cleaning a surface comprising outputting signals having two or more different frequencies switched every 0.01 to 20 milliseconds and which are supplied to a vibrator, and the ultrasonic waves of continuing frequencies comprising said two or more frequencies and other frequencies which are emitted from the vibrator, whereby the surface to be cleaned is effectively cleaned by the ultrasonic waves.
Claim 3
Dependent Claim
19 words
A multi-frequency ultrasonic cleaning method as set forth claim 1 wherein the vibrator has a plurality of resonance frequencies.
Claim 4
Dependent Claim
58 words
A multi-frequency ultrasonic cleaning apparatus comprising one vibrator, a drive circuit connected to the vibrator, a fast switching circuit connected to the drive circuit, at least two oscillators connected to the fast switching circuit, the fast switching circuit switching the signals from the oscillators every 0.01 to 20 milliseconds, and a control circuit for controlling the switching circuit.
Claim 5
Dependent Claim
58 words
A multi-frequency ultrasonic cleaning apparatus comprising one vibrator, a drive circuit connected to the vibrator, a fast switching circuit connected to the drive circuit, at least two oscillators connected to the fast switching circuit, the fast switching circuit switching the signals from the oscillators every 0.01 to 20 milliseconds, and a control circuit for controlling the switching circuit.
Claim 6
Dependent Claim
19 words
A multi-frequency ultrasonic cleaning apparatus as set forth claim 3 wherein the vibrator has a plurality of resonance frequencies.
References Cited (Backward Citations)
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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) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |