Battery operated rechargeable light
OwnerRaymond L. Sharrah, Norman A. Messingerinventors
Life of this patent
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Abstract
A battery operated rechargeable portable light may comprise: a light housing, a light source for producing light, a switch for selectively energizing the light source, charging contacts for receiving a DC voltage from a DC voltage source; and a DC charging circuit for coupling the DC voltage to a rechargeable battery. The DC charging circuit may apply a DC voltage of the given polarity to the rechargeable battery irrespective of the polarity of the DC voltage or the light may provide an indication of the presence and absence of the DC voltage, or both, e.g., by the light source producing light.
Claims37
A battery operated portable light rechargeable from a DC voltage source comprising:
- a light housing having a cavity for receiving therein a rechargeable battery of a given polarity;
- a light source disposed for producing light when energized;
- a switch for selectively connecting said light source and the rechargeable battery in circuit for selectively energizing said light source to produce light;
- a pair of charging contacts on said light housing for receiving a DC voltage from a DC voltage source;
- and
- a DC charging circuit connected to said pair of charging contacts for coupling the DC voltage received at said pair of charging contacts to the rechargeable battery of the given polarity, wherein said DC charging circuit applies a DC voltage of the given polarity to the rechargeable battery irrespective of the polarity of the DC voltage received at the pair of charging contacts.
A battery operated portable light rechargeable from a DC voltage source comprising:
- a light housing for receiving therein a rechargeable battery having a positive terminal and a negative terminal;
- a light source disposed in said light housing for producing light when energized;
- a switch for selectively connecting said light source and the rechargeable battery in circuit for selectively energizing said light source to produce light;
- first and second charging contacts on said light housing for receiving a DC voltage from a DC voltage source;
- and
- a DC charging circuit connected to said first and second charging contacts for coupling the DC voltage received at said first and second charging contacts to the rechargeable battery, wherein said DC charging circuit applies a relatively positive DC voltage to the positive terminal of the rechargeable battery and a relatively negative DC voltage to the negative terminal of the rechargeable battery irrespective of whether a relatively positive DC voltage is received at the first charging contact and a relatively negative DC voltage is received at the second charging contact or whether a relatively positive DC voltage is received at the second charging contact and a relatively negative DC voltage is received at the first charging contact.
A battery operated portable light rechargeable from a DC voltage source comprising:
- a light housing for receiving therein a rechargeable battery having a positive terminal and a negative terminal;
- a light source disposed in said light housing for producing light when energized;
- a switch for selectively connecting said light source and the rechargeable battery in circuit for selectively energizing said light source to produce light;
- first and second charging contacts on said light housing for receiving a DC voltage from a DC voltage source;
- and
- a DC charging control circuit connected to said first and second charging contacts for coupling the DC voltage received at said first and second charging contacts to the rechargeable battery,
- wherein said light source is extinguished when the DC voltage received at said first and second charging contacts is present and said light source is energizable when the DC voltage received at said first and second charging contacts is removed, thereby to provide an indication of the presence and absence of the DC voltage at said first and second charging contacts.
Dependencies are inferred from the claim text.