Electrical plug and socket having replaceable overcurrent protection device with safety latch means

• US 4,768,979 A
• Filed: 12/16/1986
• Issued: 09/06/1988
• Est. Priority Date: 08/07/1986
• Status: Expired due to Term

• Current Assignee: Jeng-Shyong Wu
• Original Assignee: Jeng-Shyong Wu
• Inventors: Wu, Jeng-Shyong
• Primary Examiner(s): Weidenfeld, Gil
• Assistant Examiner(s): Paumen, Gary F.
• Application Number:
  US06/942,502
• Time in Patent Office: 630 Days
• Field of Search: 339/147 R, 339/147 P, 337/197, 337/198, 337/201, 337/213, 439/621, 439/622
• US Class Current: 439/620.31
• CPC Class Codes: H01R 13/68 with built-in fuse

Abstract

An electrical plug which has removable inner components and which may have at its rear end a pair of plug slots which are adapted to receive the prongs of a second plug. Fuses and conductors are removable from and insertable into a channel formed within the housing through two different openings in the housing wall. The conductors and their terminals are part of a conductor assembly which includes a resilient lip for a snap fit into the plug housing. The fuses are connected to a securing body which fits tightly in the housing to provide a connection between the conductor terminals, the fuses, and the prongs.

Claims

1. An electrical plug comprising:

an insulating housing defining a central channel, said housing having at least a first and second opening;

first and second contact prongs, each of said contact prongs extending into said insulating housing and, a portion of each of said contact prongs communicating with said channel;

a conductor assembly including a conductor body having a resilient lip portion, a first and second conductor mounted to the conductor body, and a first and second conductor terminal, said conductor assembly positionable within one of the openings in said housing, said resilient lip engaging a portion of said housing so as to retain the conductor assembly within said housing, subsequent removal of said conductor assembly not requiring removal of said prongs therewith; and

, a securing body insertable within said housing through the other of the openings through said housing, said securing body carrying a pair of fuse elements, the securing body being disposed within said housing so as to position one fuse element in electrical connection with a first prong and the first conductor terminal and to position a second fuse member in electrical connection with the second prong and the second conductor terminal.

2. A plug according to claim 1, wherein said openings are in the front end, the rear end, the top side wall, or the bottom side wall of the housing.

3. A plug according to claim 1, wherein said conductor assembly is admitted into the housing through an opening in the rear end thereof.

4. A plug according to claim 1, wherein said conductor assembly is admitted into the housing from one of a top, or a bottom side wall opening.

5. A plug according to claim 1, wherein the securing body is removable from and insertable into one of a top or bottom side wall opening and said housing includes a locking sliding door covering said side wall opening.

6. A plug according to claim 1, wherein the securing body is removable from and insertable into the front end of the housing.

7. A plug according to either of claims 1 or 6, wherein the securing body is in the form of a semi-enclosed bracket having a retaining member to seat said fuse elements.

8. A plug according to claim 7, wherein the securing body has guide members to slide along a partition wall disposed on a top wall opening of the housing.

9. A plug according to the claim 1, wherein said housing includes a pair of through slots on the rear end thereof opposite to one of the prong ends for receiving prongs from another plug.