Adapter for use in measuring electrical current drawn across a fuse in a circuit

• US 6,686,744 B1
• Filed: 03/15/2002
• Issued: 02/03/2004
• Est. Priority Date: 03/15/2002
• Status: Expired due to Fees

• Current Assignee: Bellsouth Intellectual Property Corporation (AT&T, Inc.)
• Original Assignee: Bellsouth Intellectual Property Corporation (AT&T, Inc.)
• Inventors: Tinsley, William
• Primary Examiner(s): Deb, Anjan K.
• Application Number:
  US10/097,572
• Time in Patent Office: 690 Days
• Field of Search: 324/507, 324/550, 324/126, 324/149, 324/537, 340/638, 337/241, 337/242, 337/206, 439/621, 439/692
• US Class Current: 324/507
• CPC Class Codes: G01R 31/74 Testing of fuses
• CPC Class Codes: H01H 2085/0216 Tools for controlling fuses or the line associated with the fuses
• CPC Class Codes: H01H 85/02 Details

Abstract

The present invention relates to an apparatus for use in measuring current drawn across a fuse socket in an electrical circuit. An exemplary embodiment of an apparatus according to the present invention is a fuse adapter that includes an outer shell that is specifically molded to fit within a corresponding fuse socket. The shell includes two contacts that electrically contact leads when inserted within the socket. The contacts also protrude through the inner surface of the fuse adapter. First and second electrically conductive paths, or wires, are connected to each contact on the inner surface of the adapter and extend outward from the base of the adapter to contact with leads of an ammeter to test the current across the fuse socket.

Claims

1. An adapter for measuring current drawn across a fuse in a circuit comprising:

a) an adapter shell shaped to fit within a fuse socket;

b) first and second electrical leads protruding from an outer surface of the shell, wherein the electrical leads are positioned to contact with first and second leads on an inner surface of the fuse socket, respectively; and

c) first and second wires electrically connected to the respective first and second electrical leads and extending from an inner surface of the adapter shell to enable an electrical connection to leads of an ammeter.

2. The adapter of claim 1, further comprising first and second internal connectors on an inner surface of the adapter shell, wherein the connectors are electrically connected through the adapter shell to the respective first and second electrical leads, and are electrically connected to the respective first and second wires.

3. The adapter of claim 1, wherein the adapter shell is substantially cylindrical in shape.

4. The adapter of claim 2, wherein the adapter shell is shaped to fit within the fuse socket in substantially the same manner as the fuse designed for use in the fuse socket.

5. The adapter of claim 1, wherein the fuse is for use in telecommunications central office switching equipment.

6. An adapter for connecting leads of an ammeter to a fuse socket, comprising:

a) an adapter shell shaped to fit within a fuse socket;

b) first and second conductive means for contacting with first and second leads on an inner surface of the fuse socket, respectively; and

c) first and second connecting means extending from an inner surface of the adapter shell for connecting the conductive means to leads of an ammeter.

7. The adapter of claim 6, wherein the first and second conductive means are located on an outer surface of the adapter shell.

8. The adapter of claim 6, wherein the first and second conductive means are located on an inner surface of the adapter shell.

9. An adapter for connecting leads of an ammeter to a fuse socket, comprising:

a) an adapter shell shaped to fit within a fuse socket;

b) first and second conductive means for contacting with first and second leads on an inner surface of the fuse socket, and for connecting the adapter from an inner surface of the adapter shell to leads of an ammeter.

10. A fuse adapter for use in testing an amount of current that is drawn across a fuse socket in an electrical circuit, wherein the fuse adapter is shaped to fit within a fuse socket and includes, on an outer surface of a shell of the adapter, first and second conductors for connecting to contacts within the fuse socket and first and second connecting wires extending from an inner surface of the shell of the adapter to connect to an ammeter, and wherein the adapter is utilized to test current through a circuit by performing the steps of:

a) detecting that an electrical circuit is disconnected at a fuse;

b) disconnecting the fuse from the fuse socket;

c) connecting the fuse adapter to the fuse socket; and

d) connecting the ammeter to the connecting wires,

wherein the amount of current drawn through the circuit is indicated by the ammeter.

11. A fuse adapter used for testing an amount of current that is drawn across a fuse socket in an electrical circuit, wherein the fuse adapter is shaped to fit within a fuse socket and includes first and second conductors for connecting to contacts within the fuse socket and first and second connecting wires extending from the adapter to connect to an ammeter, and wherein the adapter is constructed by:

a) identifying a type of fuse specifically designed for use in the fuse socket;

b) removing a filament from between two contacts within the fuse; and

c) connecting wires to each contact within the fuse and extending the wires from the fuse to be connected to leads of an ammeter.