Clamp jaw for by-pass type meter sockets

Patent metadata

Field	Value
Publication number	US-10498063-B2
Application number	US-201715689190-A
Country	US
Kind code	B2
Filing date	Aug 29, 2017
Priority date	Aug 29, 2017
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A meter socket is provided for watt-hour meters. The meter socket comprises a block assembly mounted at a center of the meter socket, a bypass mechanism situated in the bottom portion of the block assembly and a plurality of clamp jaws. The block assembly includes a top portion and a bottom portion. The bypass mechanism includes a plurality of rotary bypass blades coupled to a lever arm. Each clamp jaw includes a clamp jaw assembly that includes a jigsaw mechanism situated in the top portion of the block assembly. The jigsaw mechanism includes a copper jaw bus, a contact plate, a jaw spring, a bypass spring, a compression spring, a shoulder screw, a rivet or one or more fasteners. Each clamp jaw further includes a clamp jaw bypass mechanism that includes a jaw opening formed between the copper jaw bus and the jaw spring to receive a rotary bypass blade of the plurality of rotary bypass blades of the bypass mechanism.

First claim

What is claimed is:

1. A meter socket for watt-hour meters, the meter socket comprising:
a block assembly mounted at a center of the meter socket, wherein the block assembly including a top portion and a bottom portion;
a bypass mechanism situated in the bottom portion of the block assembly, wherein the bypass mechanism includes a plurality of rotary bypass blades coupled to a lever arm; and
a plurality of clamp jaws, each clamp jaw including:
a clamp jaw assembly that includes a jigsaw mechanism situated in the top portion of the block assembly, wherein the jigsaw mechanism includes a copper jaw bus, a contact plate, a jaw spring, a bypass spring, a compression spring, a shoulder screw, a rivet or one or more fasteners,
wherein the compression spring is disposed external to a gap between the copper jaw bus and a jaw spring combo of the jaw spring and the bypass spring using the shoulder screw for externally preloading the pressure,
wherein the copper jaw bus including a “J” shaped jaw housing having only a face wall with no wrap around shape,
wherein the compression spring is compressed outside of the jaw spring combo and against the copper jaw bus while the copper jaw bus, the jaw spring combo and the compression spring are disposed in a sequence, and
a clamp jaw bypass mechanism that includes a jaw opening formed between the copper jaw bus and the jaw spring to receive a rotary bypass blade of the plurality of rotary bypass blades of the bypass mechanism.

2. The meter socket of claim 1 , wherein the copper jaw bus and the contact plate are assembled to the clamp jaw assembly with one or more fasteners.

3. The meter socket of claim 2 , wherein the jaw spring and the bypass spring are attached together with a rivet to form a spring combo.

4. The meter socket of claim 3 , wherein the clamp jaw assembly and the spring combo are assembled with the compression spring and the shoulder screw or a screw and a cylinder spacer.

5. The meter socket of claim 1 , wherein the meter socket is a single phase lever bypass meter socket having four clamp jaw assemblies.

6. The meter socket of claim 1 , wherein the meter socket is a three phase lever bypass meter socket having six clamp jaw assemblies.

7. The meter socket of claim 1 , wherein the meter socket includes a meter cover and an enclosure, wherein the meter cover with a round opening for a watt-hour meter is secured to the enclosure with a rotary latch.

8. The meter socket of claim 1 , wherein the block assembly is a 3 phase lever bypass meter socket block assembly that has a plastic shield on top of the plurality of clamp jaws such that the plastic shield has 3 pairs of rectangular slots to let through watt-hour meter blades to plug into the plurality of clamp jaws under the plastic shield.

9. The meter socket of claim 1 , wherein the plurality of clamp jaws are meter jaws that are vertically mounted on a plastic block.

10. The meter socket of claim 9 , wherein the plurality of rotary bypass blades are installed on the lever arm to engage with the plurality of clamp jaws for activating the plurality of clamp jaws, bypassing the plurality of clamp jaws, disengaging the plurality of clamp jaws and releasing the plurality of clamp jaws.

11. The meter socket of claim 1 , further comprising:
a meter socket supporting bracket extending on both sides of a plastic shield, wherein the lever arm is installed through the meter socket supporting bracket.

12. The meter socket of claim 1 , wherein when the lever arm is at a resting position a lever arm handle rests at a lower position and the plurality of rotary bypass blades are in a normal angle to a surface of the plastic block.

13. The meter socket of claim 12 , wherein when the lever arm is engaged in an upper position the plurality of rotary bypass blades insert into a gap between a lower tab of a clamp jaw of the plurality of clamp jaws such that one side of a rotary bypass blade of the plurality of rotary bypass blades makes contact to the lower tab of the clamp jaw of the plurality of clamp jaws, while another side of the rotary bypass blade of the plurality of rotary bypass blades pushes a lower portion of the jaw spring and drives the clamp jaw of the plurality of clamp jaws open at a top.

14. A meter jaw, comprising:
a connector assembly, wherein the connector assembly including:
a jaw spring combo;
a compression spring; and
a shoulder screw or a screw and a cylinder spacer,
wherein the compression spring is disposed external to a gap between a copper jaw bus and the jaw spring combo using the shoulder screw for externally preloading the pressure,
wherein the copper jaw bus including a “J” shaped jaw housing having only a face wall with no wrap around shape, and
wherein the compression spring is compressed outside of the jaw spring combo and against the copper jaw bus while the copper jaw bus, the jaw spring combo and the compression spring are disposed in a sequence.

15. The meter jaw of claim 14 , wherein a plastic clip hooks on a back of the meter jaw, the plastic clip has a hole at an end for mounting a plastic shield.

16. The meter jaw of claim 14 , wherein the connector assembly is assembled together by either two screws or two rivets.

17. The meter jaw of claim 14 , wherein the connector assembly is a fastened together flat bus and a “J” shaped jaw housing.

18. A method for providing a meter socket for watt-hour meters, the method comprising:
providing a block assembly mounted at a center of the meter socket, wherein the block assembly including a top portion and a bottom portion;
providing a bypass mechanism situated in the bottom portion of the block assembly, wherein the bypass mechanism includes a plurality of rotary bypass blades coupled to a lever arm; and
providing a plurality of clamp jaws, each clamp jaw including:
a clamp jaw assembly that includes a jigsaw mechanism situated in the top portion of the block assembly, wherein the jigsaw mechanism includes a copper jaw bus, a contact plate, a jaw spring, a bypass spring, a compression spring, a shoulder screw, a rivet and two fasteners,
wherein the compression spring is disposed external to a gap between the copper jaw bus and a jaw spring combo of the jaw spring and the bypass spring using the shoulder screw for externally preloading the pressure,
wherein the copper jaw bus including a “J” shaped jaw housing having only a face wall with no wrap around shape,
wherein the compression spring is compressed outside of the jaw spring combo and against the copper jaw bus while the copper jaw bus, the jaw spring combo and the compression spring are disposed in a sequence, and
a clamp jaw bypass mechanism that includes a jaw opening formed between the copper jaw bus and the jaw spring to receive a rotary bypass blade of the plurality of rotary bypass blades of the bypass mechanism.

19. The method of claim 18 , further comprising:
assembling the copper jaw bus and the contact plate to the clamp jaw assembly with two fasteners;
attaching together the jaw spring and the bypass spring with a rivet to form a spring combo; and
assembling the clamp jaw assembly and the spring combo with the compression spring and the shoulder screw.

20. The method of claim 18 , wherein the meter socket is a single phase lever bypass meter socket having four clamp jaw assemblies or is a three phase lever bypass meter socket having six clamp jaw assemblies.

Assignees

• Siemens Industry Inc

Inventors

• Zhang Fan
• Rusch Brian J
• Harnois Carey D

Classifications

• G01R1/0416

  Connectors, terminals (G01R1/0425 and G01R1/0433 take precedence; with measurement function for battery poles G01R31/364) · CPC title

• H01R13/11

  Resilient sockets (carrying separate resilient parts H01R13/15) · CPC title

• H01R13/187 Primary

  with spring member in the socket · CPC title

• H01R13/193

  Means for increasing contact pressure at the end of engagement of coupling part {, e.g. zero insertion force or no friction} · CPC title

• G01R11/04

  Housings; Supporting racks; Arrangements of terminals · CPC title