# US 5,703,751 A · Electrical apparatus with a detachable power supply base

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,703,751 A
- Document ID: US5703751A
- Status: Granted
- Kind: A
- Application number: 08/647,627
- Filed: 1996-05-15
- Granted: 1997-12-30
- Earliest claimed: 1996-05-15
- Inventors: Ming-Chou Huang
- Web page: https://patentgrep.com/patent/US5703751A

## CPC

- H02B 1/26: Casings; Parts thereof or accessories therefor
- H02B: BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER

## Abstract

An electrical apparatus with a detachable power supply base, including a power supply base which holds a rechargeable battery and a control circuit on the inside and has two coupling channel bars at the top, and an electrical apparatus having a base and two outward coupling flanges raised from two opposite sides of the base and adapted for detachably coupling to the coupling channel bars of the power supply base to become electrically connected to the battery of the power supply base. The control circuit detects the power level of the battery and shows it through a display for example an indicator light on the outside of the power supply base.

## Claims

### Claim 1

An electrical apparatus with a detachable power supply base, comprising:
a power supply base, said power supply base comprising a casing defining at least one storage chamber, two coupling channel bars respectively raised from said casing and facing each other, and two electrical conductive plates respectively installed in said coupling channel bars;
an electrical apparatus having two outward flanges raised from two opposite sides of a base thereof and adapted for detachably coupling to said coupling channel bars to secure said electrical apparatus to said power supply base, and two electrical conductive plates respectively installed in said outward flanges, the electrical conductive plates of said outward flanges being disposed in contact with the electrical conductive plates of said coupling channel bars when said outward flanges are forced into engagement with said coupling channel bars; and
at least one power supply device respectively mounted in the at least one storage chamber of said power supply base, each of said at least one power supply device having two opposite terminals respectively disposed in contact with the electrical conductive plates of said coupling channel bars when installed in the at least one storage chamber of said power supply base.

### Claim 2 (depends on 1)

The electrical apparatus with a detachable power supply base of claim 1 wherein said casing further comprises a spring rod disposed in front of said coupling channel bars, said spring rod being forced downwards by the base of said electrical apparatus when the base of said electrical apparatus is moved to force said outward flanges into engagement with said coupling channel bars, and returned to its former shape to stop the base of said electrical apparatus in between said coupling channel bars when said outward flanges are forced into engagement with said coupling channel bars.

### Claim 3 (depends on 1)

The electrical apparatus with a detachable power supply base of claim 1 wherein each of said at least one power supply device is a battery.

### Claim 4 (depends on 3)

The electrical apparatus with a detachable power supply base of claim 3 wherein said battery is rechargeable.

### Claim 5 (depends on 1)

The electrical apparatus with a detachable power supply base of claim 1 wherein said casing has connector means for the connection of an external DC power supply device.

### Claim 6 (depends on 1)

The electrical apparatus with a detachable power supply base of claim 1 wherein said power supply base further comprises a display means to show the power level of said at least one power supply device.

### Claim 7 (depends on 6)

The electrical apparatus with a detachable power supply base of claim 6 wherein said display means is light emitting diodes.

### Claim 8 (depends on 6)

The electrical apparatus with a detachable power supply base of claim 6 wherein said display means is a liquid crystal display.

### Claim 9 (depends on 1)

The electrical apparatus with a detachable power supply base of claim 1 wherein the electrical conductive plates of said electrical apparatus and said power supply base are metal contact plates.