Ultraviolet sterilization device

• US 5,920,075 A
• Filed: 10/22/1997
• Issued: 07/06/1999
• Est. Priority Date: 10/22/1997
• Status: Expired due to Fees

• Current Assignee: Michael D. Whitehead
• Original Assignee: Michael D. Whitehead
• Inventors: Whitehead, Michael D.
• Primary Examiner(s): Berman, Jack I.
• Application Number:
  US08/955,227
• Time in Patent Office: 622 Days
• Field of Search: 250/504 H, 250/504 R, 250/492.1
• US Class Current: 250/492.1
• CPC Class Codes: A61L 2/10 Ultraviolet radiation

Abstract

A hand-held sterilization device that emits ultraviolet radiation in a range sufficient to eradicate germs, bacteria, viruses, and other pathogens and microorganisms is disclosed. The device includes a housing containing an ultraviolet light source, a power source, and an electronic safety mechanism, wherein the electronic safety mechanism includes both a switch lock circuit and a digital lock circuit that must be actuated to close an electric circuit and actuate the device. A method of using the hand-held sterilization device is also disclosed.

Claims

1. A hand-held sterilization device comprising:

a housing containing an ultra-violet light source, a power source, and an electronic safety mechanism, wherein

said ultraviolet light source operates in a wavelength spectra effective to have germicidal, bactericidal, and pathogenicidal effects;

said power source operates the ultraviolet light source at an intensity emission of said ultraviolet light from said device that is unsafe to the unprotected human anatomy and effective to have germicidal, bactericidal, and pathogenicidal effects; and

said electronic safety mechanism regulates said power source,

wherein said electronic safety mechanism includes a switch lock attached to said housing and electrically integrated in an electric circuit with said power source, said switch lock having a first position and a second position such that said first position opens said electric circuit at said switch lock and said second position closes said circuit at said switch lock to send power to the device, and

wherein said electronic safety mechanism includes a digital lock circuit coupled to said power source, such that a predetermined digital signal must be received to close said electric circuit.

2. The hand-held sterilization device of claim 1, wherein said intensity of ultraviolet light emitted from said device is approximately 2000-6000 microwatts/cm².

3. The hand-held sterilization device of claim 2, wherein said electronic safety mechanism includes one of a numerical and alphabetical keypad attached to said housing and coupled to said digital lock circuit such that a predetermined numerical or alphabetical code is entered at said keypad to send said predetermined digital signal to close said electric circuit.

4. The hand-held sterilization device of claim 3, wherein said keypad includes a visual display coupled to said digital lock circuit such that predetermined messages are broadcast on said visual display corresponding to said signals received by said digital lock circuit.

5. The hand-held sterilization device of claim 4, wherein said display screen includes a light-emitting diode.

6. The hand-held sterilization device of claim 4, wherein said keypad includes an audio speaker coupled to said digital lock circuit such that predetermined messages are broadcast on said audio speaker corresponding to said signals received by said digital lock circuit.

7. The hand-held sterilization device of claim 6, wherein said electronic safety mechanism includes a switch lock attached to said housing and electrically integrated in said electric circuit with said power source, said switch lock having a first position and a second position such that said first position opens said electric circuit at said switch lock and said second position closes said circuit at the switch lock to send power to the device.

8. The hand-held sterilization device of claim 1, wherein said housing includes a retractable hood coupled to said housing with a first position and a second position, wherein in said first position, said ultraviolet light source is completely enclosed within said hood.

9. The hand-held sterilization device of claim 8, wherein said retractable hood is electrically integrated in an electric circuit with said electronic safety mechanism such that said electronic safety mechanism actuates said retractable hood from said first position to a second position.

10. A method for sterilizing objects comprising:

providing a hand-held sterilization device that includes

a housing containing an ultra-violet light source, wherein said ultraviolet light source operates in a wavelength spectra effective to have germicidal, bactericidal, and pathogenicidal effects, a power source that operates the ultraviolet light source such that the amount of said ultraviolet light emitted from said device is unsafe to the unprotected human anatomy and is effective to have germicidal, bactericidal, and pathogenicidal effects, and an electronic safety mechanism that regulates the power source,

wherein said electronic safety mechanism includes a switch lock attached to said housing and electrically integrated in an electric circuit with said power source, said switch lock having a first position and a second position such that said first position opens said electric circuit at said switch lock and said second position closes said circuit at the switch lock to send power to the device, and

wherein said electronic safety mechanism includes a digital lock circuit coupled to said power source, such that a predetermined digital signal must be received to close said electric circuit; and

passing said hand-held sterilization device over said object for a sufficient time to have germicidal, bactericidal, and pathogenicidal effects.

11. The method of claim 10, wherein said said electronic safety mechanism of said hand-held sterilization device comprises a digital lock circuit attached to said housing coupled to said power source, and wherein said method further comprises sending a predetermined digital signal to said digital lock circuit to close said electric circuit.

12. The method of claim 11, wherein said electronic safety mechanism of said hand-held sterilization device comprises, one of a numerical and alphabetical keypad attached to said housing and electronically integrated with said digital lock circuit and said method further comprises entering a predetermined code at said keypad to send said predetermined digital signal to close said electric circuit and operate said ultraviolet light source.

13. The method of claim 12, wherein said keypad includes a visual display coupled to said digital lock circuit such that predetermined messages are broadcast on said visual display corresponding to said signals received by said digital lock circuit.

14. The method of claim 13, wherein said display screen includes a light-emitting diode.

15. The method of claim 14, wherein said keypad includes an audio speaker coupled to said digital lock circuit such that predetermined messages are broadcast on said audio speaker corresponding to said signals received by said digital lock circuit.

16. The method of claim 15 wherein said electronic safety mechanism of said hand-held sterilization device includes a light emitting diode that displays safety instructions.

17. The method of claim 16, wherein said electronic safety mechanism includes a switch lock attached to said housing and electrically integrated in an electric circuit with said power source, said switch lock having a first position and a second position such that said first position opens said electric circuit at said switch lock and said second position closes said circuit at the switch lock.