Laminate structure and clamping mechanism for faulted circuit indicator

Patent metadata

Field	Value
Publication number	US-9915680-B2
Application number	US-201514680794-A
Country	US
Kind code	B2
Filing date	Apr 7, 2015
Priority date	Apr 11, 2014
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A faulted circuit indicator (FCI) device for installation on a power line includes a housing, a laminate structure fastened to the housing and configured to receive the power line, and a clamp mechanism pivotally fastened to the housing and configured to secure the housing to the power line. The clamp mechanism includes a pair of opposing clamp arms each having a curved configuration. The curved configuration of the clamp arms maintains the power line in a centered relationship within the laminate structure when the clamp arms are engaged on the power line over a range of power line diameters.

First claim

What is claimed is:

1. A faulted circuit indicator (FCI) device for installation on a power line, comprising:
a housing;
a laminate structure fastened to the housing and configured to receive the power line;
a clamp mechanism pivotally fastened to the housing and configured to secure the housing to the power line, wherein the clamp mechanism includes a pair of opposing clamp arms each having a curved configuration, wherein the curved configuration of the clamp arms maintains the power line in a centered relationship within the laminate structure when the clamp arms are engaged on the power line over a range of power line diameters; and
a spring-loaded trigger arm pivotally coupled to one of the pair of clamp arms and configured to engage the other of the pair of clamp arms when the clamp arms are in an open configuration.

2. The FCI device of claim 1 , wherein the clamp arms comprise opposing L-shaped members.

3. The FCI device of claim 1 , wherein the pair of opposing clamp arms comprise spring biased clamp arms.

4. The FCI device of claim 1 , wherein each of the clamp arms comprise a hinge end coupled to the housing and a distal end opposite from the hinge end,
wherein the trigger arm is pivotally coupled to the distal end of the one of the pair of clamp arms and is spring biased to forcibly engage the other of the pair of clamp arms.

5. The FCI device of claim 4 , wherein the other of the pair of clamp arms comprises a trigger arm engaging surface for engaging an end of the trigger arm coupled to the one of the pair of clamp arms,
wherein, absent other forces, engagement of the end of the spring-loaded trigger arm against the trigger arm engaging surface causes the pair of clamp arms to open relative to each other.

6. The FCI device of claim 5 , wherein the trigger arm engaging surface comprises an extension flange projecting from the other of the pair of clamp arms along a length of the other of the pair of clamp arms.

7. The FCI device of claim 1 , wherein the trigger arm comprises a curved surface for engaging the power line when the FCI device is in the open configuration.

8. The FCI device of claim 1 , further comprising a clamp spring for biasing the pair of clamp arms towards each other,
wherein the each of the pair of clamp arms include a plurality of spring tension selection holes for allowing adjustments to an amount of tension exerted by the clamp spring.

9. The FCI device of claim 8 , wherein the top laminate assembly comprises a generally C-shaped element having a first leg, a second leg, and a top,
wherein the first leg of the top laminate assembly is hingedly coupled to the first laminate side, and
wherein the second leg of the top laminate assembly engages the second laminate side when the FCI is in a closed configuration.

10. The FCI device of claim 9 , wherein the hinged coupling between the first leg and the first laminate side comprises a hinge having a pivot point that is extended beyond a plane of the first laminate side sufficient to remove the top laminate assembly from overlaying a space between the first laminate side and the second laminate side, when the FCI device is in the open configuration.

11. The FCI device of claim 9 , further comprising a dual action top laminate spring for biasing the top laminate member into both the open configuration and the closed configuration.

12. The FCI device of claim 11 , wherein the dual action top laminate spring comprises a spring coupled to each of the hinge and the housing.

13. A faulted circuit indicator (FCI) device for installation on a power line, comprising:
a housing;
a laminate structure fastened to the housing and configured to receive the power line; and
a clamp mechanism pivotally fastened to the housing and configured to secure the housing to the power line,
wherein the clamp mechanism includes a pair of opposing clamp arms each having a curved configuration,
wherein the curved configuration of the clamp arms maintains the power line in a centered relationship within the laminate structure when the clamp arms are engaged on the power line over a range of power line diameters, and
wherein the laminate structure comprises:
a winding assembly coupled to the housing;
first and second laminate sides projecting substantially perpendicularly from the winding assembly in a spaced relationship relative to each other; and
a top laminate assembly configured to automatically extend between the first laminate side and the second laminate side when the FCI device is installed onto the power line.

14. The FCI device of claim 13 , wherein the top laminate assembly further comprises:
a power line receiving element that projects from the top laminate assembly and into a space between the first laminate side and the second laminate side to engage the power line, when the FCI device is in the open configuration,

wherein movement of the FCI device toward the power line causes the top laminate assembly to rotate from the open configuration to the closed configuration.

15. The FCI device of claim 14 , wherein the power line receiving element comprises a generally planar element coupled to the first leg.

16. The FCI device of claim 14 , wherein the power line receiving element comprises a first member hingedly coupled to a second member,
wherein a combined length of the first member and the second member is longer than a length of the first laminate side.

17. A faulted circuit indicator (FCI) device for installation on a power line, comprising:
a housing;
a laminate structure fastened to the housing and configured to receive the power line; and
a clamp mechanism pivotally fastened to the housing and configured to secure the housing to the power line,
wherein the laminate structure comprises:
a winding assembly coupled to the housing;
first and second laminate sides projecting substantially perpendicularly from the winding assembly in a spaced relationship relative to each other; and
a top laminate assembly configured to automatically extend between the first laminate side and the second laminate side when the FCI device is installed onto the power line.

18. The FCI device of claim 17 , wherein the top laminate assembly comprises a generally C-shaped element having a first leg, a second leg, and a top,
wherein the first leg of the top laminate assembly is hingedly coupled to the first laminate side, and
wherein the second leg of the top laminate assembly engages the second laminate side when the FCI is in a closed configuration.

19. The FCI device of claim 18 , wherein the hinged coupling between the first leg and the first laminate side comprises a hinge having a pivot point that is extended beyond a plane of the first laminate side sufficient to remove the top laminate assembly from overlaying a space between the first laminate side and the second laminate side, when the FCI device is in the open configuration.

20. The FCI device of claim 18 , further comprising a dual action top laminate spring for biasing the top laminate member into both the open configuration and the closed configuration, wherein the dual action top laminate spring comprises a spring coupled to each of the hinge and the housing.

21. The FCI device of claim 17 , wherein the top laminate assembly further comprises:
a power line receiving element that projects from the top laminate assembly and into a space between the first laminate side and the second laminate side to engage the power line, when the FCI device is in th

Assignees

• Thomas & Betts Int Llc

Inventors

• Khoshnood Bahman
• Dodds William J
• Delgado Camilo
• Fong Robert
• Yeeli Venket Rao
• Foy Hunter Thornell
• Srinivas Chandrashekar
• Martin David
• Siebens Larry N
• Szyszko Stanley

Classifications

• F16B2/04

  internal, i.e. with spreading action (F16B2/14 - F16B2/18 take precedence) · CPC title

• F16B2/02

  Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening · CPC title

• G01R1/04 Primary

  Housings; Supporting members; Arrangements of terminals · CPC title

• G01R1/22 Primary

  Tong testers acting as secondary windings of current transformers · CPC title

• G01R31/08

  Locating faults in cables, transmission lines, or networks · CPC title