Combination battery charger and power source for electrically powered devices

• US 5,780,993 A
• Filed: 11/17/1995
• Issued: 07/14/1998
• Est. Priority Date: 11/17/1995
• Status: Expired due to Fees

• Current Assignee: John Moong Hung Tsang
• Original Assignee: John Moong Hung Tsang
• Inventors: Tsang, John Moong Hung
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US08/560,322
• Time in Patent Office: 970 Days
• Field of Search: 320/2, 320/15, 320/56, 320/107, 320/110, 320/111, 320/112, 320/137, 320/101, 320/104, 320/155, D13/103, D13/107-108, 429/96-100
• US Class Current: 320/111
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 50/50 Current conducting connections for cells or batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A combination charger and power source for an electrically powered device having a removable battery pack that has one or more batteries enclosed within a battery pack case having a mechanical connector for removably mechanically attaching the battery pack to the device and an electrical connector for electrically connecting batteries within the case to the device when the battery pack is mechanically attached to the device comprises a case having a mechanical connector adapted to engage the mechanical connector of the battery pack for attaching the battery pack to the charger, an electrical connector adapted to make an electrical connection to the battery pack when the battery pack is attached to the charger, a recess in the case and an integral plug in the recess and pivotally attached to the case for movement between an extended position permitting the charger to be plugged directly into a conventional AC connector, and a recessed position in which the plug is disposed substantially within the recess in the case.

Claims

1. A combination charger and power source for an electrically powered device having a removable battery pack that includes one or more batteries enclosed within a case having a mechanical connector for removably mechanically attaching the battery pack to the device, and an electrical connector for electrically connecting the batteries to the device when the battery pack is mechanically attached to the device, comprising:

a case having a mechanical connector adapted to engage the mechanical connector of the battery pack to attach the battery pack to the charger;

an electrical connector adapted to make an electrical connection to the battery pack when the battery pack is attached to the charger;

a recess in the case;

an integral plug in the recess and pivotally attached to the case for movement between an extended position permitting the charger to be plugged directly into a conventional AC connector, and a recessed position substantially within the recess; and

a connector for supplying power from a battery attached to the charger directly to the device, for supplying power from the power source to the device when no battery is attached, or the battery has insufficient charge to operate the device.

2. The combination charger and power source of claim 1 in which the integral plug comprises a plug having flat bladed connectors for attachment to a US style electrical connector, and also comprising an adapter having a female connector adapted to receive the integral plug, and a male connector adapted to be plugged into a European style electrical outlet, the adapter being sized to be received in the recess of the case of the combination charger and power source while attached to the integral plug, when the plug is in the recessed position.

3. The combination charger and power source of claim 1 comprising a power converter for converting either ac or dc power connected to the integral plug to power for charging the battery and for powering the device.

4. The combination charger and power source of claim 1 comprising an array of photo voltaic cells detachably mounted to the case, and an electrical connection on the case for making electrical contact to the array when the array is mounted on the case for allowing the array of photo voltaic cells to charge the battery.

5. The combination charger and power source of claim 1 comprising an electrical connector on the case connected to the battery pack when the battery pack is mounted on the case for allowing the battery pack to be charged from an external direct current power source.

6. The combination charger and power source of claim 1 comprising an indicator light on the case for indicating the state of charge of a battery pack mounted on the case.

7. The combination charger and power source of claim 1 comprising an indicator light on the case for indicating that a battery pack on the case is being charged.

8. The combination charger and power source of claim 1 comprising a second recess and a second integral plug in the recess and pivotally mounted to the case for movement between an extended position permitting the charger to be plugged directly into a conventional AC connector of a different type from the first connector, and a recessed position substantially within the recess.

9. A combination charger and power source for an electrically powered device having a removable battery pack that includes one or more batteries enclosed within a case having a mechanical connector for removably mechanically attaching the battery pack to the device, and an electrical connector for electrically connecting the batteries to the device when the battery pack is mechanically attached to the device, comprising:

a case having a mechanical connector adapted to engage the mechanical connector of the battery pack to attach the battery pack to the charger;

an electrical connector adapted to make an electrical connection to the battery pack when the battery pack is attached to the charger;

a recess in the case; and

an integral plug in the recess pivotally attached to the case for movement between an extended position permitting the charger to be plugged directly into a conventional AC connector, in a recessed position substantially within the recess, wherein the integral plug comprises a plug having flat bedded connectors for attachment to a US style electrical connector, and also comprising an adapter having a female connector adapted to receive the integral plug, and a male connector adapted to be plugged into a European style electrical outlet, the adapter being sized to be received in the recess of the case of the combination charger and power source while attached to the integral plug when the plug is in the recessed position.