POWER SENSING IN A FLASHLIGHT
First Claim
Patent Images
1. A flashlight comprising:
- a body for receiving a battery, the body having a longitudinal axis and a head and a tail;
a head on the body having a light emitting source;
a circuit for operation to signal that battery voltage is at a selected voltage or power level, wherein the selected voltage includes sensing of detecting low voltage or power, by detecting a voltage or power drop rate at a relatively faster rate than a normal drop rate prior to voltage or power being close to a low voltage or power level; and
at least one switch, the switch acting relative to the body to open and close an electric circuit between the battery and the light emitting source.
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Accused Products
Abstract
A flashlight includes a battery and a circuit for operation to signal to a user that the battery voltage is at selected voltage or power level. There can be two switches each being for operating a light emitting source of the flashlight. The switches are linked 3-way switches and have momentary-on functionality. An enlarged head is located above the barrel and there is the intermediate portion between the head and the barrel. The intermediate portion receives part of the first switch. The second switch is located in part of the tail cap of the flashlight.
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Citations
25 Claims
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1. A flashlight comprising:
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a body for receiving a battery, the body having a longitudinal axis and a head and a tail; a head on the body having a light emitting source; a circuit for operation to signal that battery voltage is at a selected voltage or power level, wherein the selected voltage includes sensing of detecting low voltage or power, by detecting a voltage or power drop rate at a relatively faster rate than a normal drop rate prior to voltage or power being close to a low voltage or power level; and at least one switch, the switch acting relative to the body to open and close an electric circuit between the battery and the light emitting source. - View Dependent Claims (2, 3, 4, 5)
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6. A flashlight comprising:
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a body for receiving a battery, the body having a longitudinal axis and a head and a tail; a head on the body having a light emitting source; a circuit for operation to signal that battery voltage is at selected voltage or power level, including having a system detect one or more voltage or power drops in a row, and thereafter activating a low voltage or power signal; and at least one switch, the switch acting relative to the body to open and close an electric circuit between the battery and the light emitting source. - View Dependent Claims (7, 8, 9, 10)
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11. A flashlight comprising:
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an elongated member for housing a battery, the member having a front end and a tail end at an opposite end of the member, and a side wall between the front end and the tail end; the member further housing a light emitting source and a three-way switching system connecting the battery to the light emitting source; the three-way switching system having a first switch located on the side wall and a second switch located on the tail end, wherein the three-way switching system allows the flashlight to be turned on using the first switch and turned off using the second switch and vice versa and wherein each of the switches also operates in the three-way switching system independently of the other switch so as to be able to independently switch the light emitting source on or off; the first switch and the second switch both including an electrical connection with the three-way switching system, the first switch and the second switch acting to open and close the three-way switching system between the battery and the light emitting source; and a circuit for operation to signal that battery voltage is at selected voltage or power level. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of operating a flashlight, the flashlight Including a body member for housing a battery, a light emitting source, an electrical circuit for connecting the battery to the light emitting source, the circuit having a first switch and a second switch and a circuit for operation to signal that battery voltage is at selected voltage or power level, the method comprising:
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turning on the light emitting source of the flashlight through the circuit by using the first switch; turning off the light emitting source using the second switch and vice versa; operating each of the switches independently of the other switch so as to be able to independently switch the light emitting source on or off; and signaling that battery voltage is at selected voltage or power level. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification