Claims
- 1. An underwater tool including a source of ultrasonic energy in a housing having an opening to engage and fit around a surface to clean said surface with said ultrasonic energy, said tool being sized to be hand-held and used by a diver underwater, said housing including a dish-shaped shell having a compliant portion around said opening, said compliant portion preventing transmission of harmful levels of said ultrasonic energy and mid-frequency noise outside of said housing, and said housing and said compliant portion having properties to absorb said ultrasonic energy and said mid-frequency noise.
- 2. An underwater tool according to claim 1 wherein said compliant portion pliably engages said surface and contaminants thereon.
- 3. An underwater tool according to claim 2 wherein said shell retains said ultrasonic energy in said housing and said compliant portion pliably engaging said surface and said contaminants seals said source of ultrasonic energy, said surface, said contaminants, and some water from ambient water.
- 4. An underwater tool according to claim 3 wherein said shell, compliant portion, said surface, and said contaminants create a chamber.
- 5. An underwater tool according to claim 4 wherein said source of ultrasonic energy includes at least one piezoelectric transducer in said chamber, and said shell diminishes transmission of said ultrasonic energy to said ambient water.
- 6. An underwater tool according to claim 5 further including interconnected power supply, signal generator, power amplifier, and impedance matching modules coupled to said transducer.
- 7. An underwater tool according to claim 6 wherein said power supply module, signal generator module, power amplifier module, and impedance matching module are contained in at least one watertight container.
- 8. An underwater tool including a source of ultrasonic energy in a housing having an opening to engage and fit around a surface to clean said surface with said ultrasonic energy, said housing including a dish-shaped shell having a compliant portion around said opening, said compliant portion pliably engaging said surface and contaminants thereon, said shell retaining said ultrasonic energy in said housing, said compliant portion pliably engaging said surface and said contaminants to seal said source of ultrasonic energy, said surface, said contaminants, and some water from ambient water, said shell, compliant portion, said surface, and said contaminants creating a chamber, said source of ultrasonic energy including at least one piezoelectric transducer in said chamber, said shell diminishing transmission of said ultrasonic energy to said ambient water; interconnected power supply, signal generator, power amplifier, and impedance matching modules coupled to said transducer, said power supply module, signal generator module, power amplifier module, and impedance matching module being contained in at least one watertight container; and a cleaning additive in said chamber to enhance cleaning of said contaminants from said surface.
- 9. An underwater tool according to claim 8 further including a plurality of transducers in said chamber phased to focus ultrasonic energy therefrom onto said contaminants and said surface.
- 10. An underwater tool according to claim 9 wherein said housing has a coating to reflect energy onto said contaminants and said surface.
- 11. An underwater tool according to claim 10 wherein said housing is shaped to focus energy onto said contaminants and said surface.
- 12. An underwater tool according to claim 4 wherein said source of ultrasonic energy includes a radiating structure in said chamber coupled to a transducer in a watertight container.
- 13. A method of cleaning contaminants from a surface underwater comprising the steps of:providing a source of ultrasonic energy in a shell-shaped housing; placing said shell-shaped housing over a surface and contaminants underwater; sealing said source, said surface, said contaminants and some water from ambient water in said housing; and projecting ultrasonic energy from said source to said surface and said contaminants.
- 14. A method according to claim 13 wherein said step of sealing comprises the steps of:providing at least an annular portion of compliant material around an opening in said housing; pressing said compliant annular portion against said surface and contaminants thereon; pliably engaging said surface and contaminants with said compliant annular portion; and preventing transmission of harmful levels of said ultrasonic energy and mid-frequency noise outside of said housing by said compliant portion.
- 15. A method of cleaning contaminants from a surface underwater comprising the steps of:providing a source of ultrasonic energy in a shell-shaped housing; placing said shell-shaped housing over a surface and contaminants underwater; sealing said source, said surface, said contaminants and some water from ambient water in said housing; said step of sealing comprises the steps of: providing at least an annular portion of compliant material around an opening in said housing; pressing said compliant annular portion against said surface and contaminants thereon; and pliably engaging said surface and contaminants with said compliant annular portion; projecting ultrasonic energy from said source to said surface and said contaminants; and diminishing transmission of energy through absorptional material of said housing to said ambient water.
- 16. A method according to claim 15 wherein said step of projecting includes the step of transmitting said ultrasonic energy through a chamber in said housing to said surface and said contaminants.
- 17. A method according to claim 16 further comprising the step of:reflecting portions of energy from a coating in said chamber to said surface and said contaminants.
- 18. A method according to claim 17 further comprising the step of:shaping said housing to reflect portions of said energy in said chamber to said surface and said contaminants.
- 19. A method according to claim 18 further comprising the step of:adding a cleaning additive to water in said chamber to aid cleaning of said contaminants from said surface.
- 20. A method according to claim 19 wherein said step of projecting includes the step of driving a piezoelectric transducer with electrical power to produce said ultrasonic energy.
- 21. A method according to claim 20 further comprising the step of:providing interconnected power supply, signal generator, power amplifier, and impedance matching modules for said transducer in a watertight container.
- 22. A method according to claim 21 wherein said steps of diminishing, reflecting, and shaping affect ultrasonic and mid-frequency energies.
- 23. A method according to claim 19 wherein said step of projecting includes the step of driving a radiating structure in said chamber to project ultrasonic energy by a transducer disposed in said container.
- 24. A device for cleaning a surface underwater comprising:a shell-shaped housing having a chamber and a compliant portion around an opening to pliably engage a surface and contaminants thereon; at least one piezoelectric transducer to project ultrasonic energy in said chamber to clean said contaminants from said surface with said ultrasonic energy, said housing diminishing transmission of said ultrasonic energy and mid-frequency energy therethrough to ambient water, and said pliable engagement of said surface and said contaminants by said compliant portion sealing said source of ultrasonic energy, said surface, said contaminants, and some water in said chamber from ambient water; a watertight container containing interconnected power supply, signal generator, power amplifier, and impedance matching modules coupled to said transducer; a cleaning additive in said chamber to enhance cleaning of said contaminants from said surface; and a coating in said chamber to reflect energy onto said contaminants and said surface.
- 25. A device according to claim 24 further comprising:a plurality of transducers in said chamber phased to focus ultrasonic energy therefrom onto said contaminants and said surface, and said housing being shaped to focus ultrasonic energy onto said contaminants and said surface.
STATEMENT OF GOVERNMENT INTEREST
The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
US Referenced Citations (5)