Head gear apparatus
First Claim
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1. A head gear apparatus, comprising:
- a helmet configured to rest on a head of a user;
a fan supported by said helmet, said fan having (i) a number of blades, and (ii) a motor for rotating said number of blades in a path of movement so as to generate a flow of air;
a battery which generates a first predetermined voltage level; and
a voltage converter electrically coupled between said battery and said motor, wherein said voltage converter is configured to continuously receive said first predetermined voltage level at an input thereof, and generate a second predetermined voltage level at an output thereof, and wherein said second predetermined voltage level is different from said first predetermined voltage level.
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Abstract
A head gear apparatus (10) is provided that moves air to cool a caregiver'"'"'s head. The head gear apparatus (10) includes a helmet (12) that has a shell (114) configured to rest upon a head of a user and a fan housing (120) movably coupled to shell (114), a fan (122) is positioned to lie within fan housing (120) and moves with fan housing (120) relative to shell (114), and a garment (14) selectively coupled to helmet (12). Garment (14) includes a face shield (20).
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Citations
19 Claims
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1. A head gear apparatus, comprising:
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a helmet configured to rest on a head of a user;
a fan supported by said helmet, said fan having (i) a number of blades, and (ii) a motor for rotating said number of blades in a path of movement so as to generate a flow of air;
a battery which generates a first predetermined voltage level; and
a voltage converter electrically coupled between said battery and said motor, wherein said voltage converter is configured to continuously receive said first predetermined voltage level at an input thereof, and generate a second predetermined voltage level at an output thereof, and wherein said second predetermined voltage level is different from said first predetermined voltage level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
said second predetermined voltage level is approximately twelve volts; and
said first predetermined voltage level is approximately six volts.
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4. The head gear apparatus of claim 1, further comprising a hood which includes a face shield, said hood being configured for attachment to said helmet.
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5. The head gear apparatus of claim 1, further comprising an alarm configured to create a signal when voltage at said output of said voltage converter is less than a predetermined voltage level.
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6. The head gear apparatus of claim 1, wherein the voltage converter is operable to generate a pulse time modulated control signal.
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7. The head gear apparatus of claim 6, wherein the voltage converter is further operable to generate the pulse time modulated control signal in the form of a pulse frequency modulated control signal.
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8. A head gear apparatus, comprising:
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a helmet configured to rest on a head of a user;
a fan supported by said helmet, said fan having (i) a number of blades, and (ii) a motor for rotating said number of blades in a path of movement so as to generate a flow of air;
a battery which generates a first voltage; and
a voltage converter electrically coupled between said battery and said motor, wherein said voltage converter is configured to continuously receive said first voltage at an input thereof, and generate a second voltage at an output thereof, and wherein said second voltage is greater than said first voltage.
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9. A head gear apparatus, comprising:
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a helmet configured to rest on a head of a user;
a fan supported by said helmet, said fan having (i) a number of blades, and (ii) a motor for rotating said number of blades in a path of movement so as to generate a flow of air;
a battery; and
a voltage converter electrically coupled between said battery and said motor, said voltage converter being operable to generate a pulse time modulated control signal and a motor input signal based on the pulse time modulated control signal. - View Dependent Claims (10, 11, 12)
said voltage converter is configured to receive a first voltage at an input thereof, and generate a second voltage at an output thereof, and wherein said second voltage is greater than said first voltage.
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11. The head gear apparatus of claim 10, wherein:
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said second voltage is approximately twelve volts; and
said first voltage is approximately six volts.
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12. The head gear apparatus of claim 9, in said voltage converter is further operable to generate the pulse time modulated control signal in the form of a pulse frequency modulated control signal.
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13. A head gear apparatus, comprising:
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a helmet configured to rest on a head of a user;
a fan supported by said helmet, said fan having (i) a number of blades, and (ii) a motor for rotating said number of blades in a path of movement so as to generate a flow of air;
a battery; and
a voltage converter electrically coupled between said battery and said motor, wherein said voltage converter includes a DC-DC controller having an efficiency of at least approximately 90%. - View Dependent Claims (14, 15, 16, 17)
said voltage converter is configured to receive a first voltage at an input thereof, and generate a second voltage at an output thereof, and wherein said second voltage is greater than said first voltage.
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17. The head gear apparatus of claim 16, wherein:
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said second voltage is approximately twelve volts; and
said first voltage is approximately six volts.
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18. A method of providing a flow of air to an individual who is wearing a helmet, comprising:
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providing said helmet with a fan having (i) a number of blades, and (ii) a motor for rotating said number of blades in a path of movement so as to generate said flow of air;
generating a pulse time modulated control signal;
generating a motor input signal based on said pulse time modulated control signal;
operating said fan based on said motor input signal; and
directing said flow of air toward said individual. - View Dependent Claims (19)
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Specification