Electric wall receptacle with ground fault protection

• US 4,034,266 A
• Filed: 08/29/1975
• Issued: 07/05/1977
• Est. Priority Date: 08/29/1975
• Status: Expired due to Term

• Current Assignee: Hubbell, Inc.
• Original Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Inventors: Misencik, John J., Virani, Gopal J.
• Primary Examiner(s): Miller, J D
• Assistant Examiner(s): Salce, Patrick R.
• Application Number:
  US05/609,135
• Time in Patent Office: 676 Days
• Field of Search: 317/18 D, 317/18 A, 317/112, 317/119, 317/120, 335/18 R, 335/21
• US Class Current: 361/42
• CPC Class Codes: H01H 83/02 operated by earth fault currents H01H83/14 takes precedence
• CPC Class Codes: H01R 13/648 Protective earth or shield arrangements on coupling devices , e.g. anti-static shielding coaxially arranged shields H01R24/38

Abstract

An electric receptacle with ground fault protection characterized by an insulating housing of rectangular configuration adapted for mounting in a wall outlet box. The housing comprises opposite end and edge walls with front and rear sides open and with a transverse partition dividing a chamber formed by the ends and side walls into a pair of side-by-side compartments. Partition aperture means between the compartments and the first compartment communicating with the open front side and the second compartment communicating with the open rear side. At least one portion of the partition being nearer the front side than the remaining portions. Receptacle components are disposed in the first compartment and electronic components are disposed in the second compartment, and the components in each compartment are so disposed as to minimize the space requirements for the receptacle.

Claims

1. An electric receptacle for mounting in a wall outlet for connecting electrical appliances to the conductors of a power source, comprising an insulating housing adapted to fit in a wall outlet box, receptacle components and electronic components within the housing;

the receptacle components comprising socket means for receiving the plug of an electrical appliance first and second pairs of contacts operable between open and closed positions for interruptably connecting the socket means to a power source, the stationary contacts of each pair of contacts being operatively mounted on the housing, a contact mounting arm carrying the movable contacts of each pair of contacts at spaced locations on the arm and aligned with the corresponding stationary contacts, a latch member releasably holding the contact arm in closed contact positions of said contacts, bias means for biasing the arm to a contact open position when the latch member is released and located between the movable contacts to effect pivotal movement of the arm upon the first pair of contacts during the initial pivotal movement when the latch member is released to effect opening of the second pair of contacts, a pivot point for the arm between the first pair of contacts and the bias means for final pivotal movement of the arm to effect opening of the first pair of contacts subsequent to opening of the second pair of contacts, operating means for moving the contacts to their open position in response to a fault signal;

the electronic components comprising ground fault responsive means for monitoring the flow of current in the conductors and delivering a fault signal to the operating means in response to a current imbalance in the conductors, and said responsive means comprising a toroidal coil through which the conductors extend.

2. The electric receptacle of claim 1 in which the housing has opposite edge walls and opposite ene walls forming open front and rear sides, a partition within the housing and dividing the housing into first and second compartments the first compartment communicating with the open front side and the second compartment communicating with the open rear side, the partition having aperture means between the compartments, the partition having at least one portion nearer the front side than the remaining portions thereof, receptacle components in the first compartment, and electronic components in the second compartment.

3. The electric receptacle of claim 2 in which the partition comprises component-receiving pockets extending from one compartment into the other.

4. The electric receptacle of claim 2 in which the partition comprises recessed surfaces for supporting the components in each compartment.

5. The electric receptacle of claim 2 in which the segments of the conductors on one side of the core are twisted for at least one turn around each other and disposed adjacent to said side of the core.

6. The electric receptacle of claim 5 in which the segments of the conductors on the other side of the core extend to the contact arm and are flexibly disposed between the core and the contact arm.