Modular fuse removal tool accessory, kit, and systems for fusible disconnect device

Patent metadata

Field	Value
Publication number	US-10692679-B2
Application number	US-201213449867-A
Country	US
Kind code	B2
Filing date	Apr 18, 2012
Priority date	Apr 18, 2012
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A removal tool accessory for replacing rectangular fuse modules of a fusible switching disconnect device. The removal tool accessory is a single piece part configured to snap-fit with the rectangular fuse module via opposing lateral sides thereof. The accessory includes an opening dimensioned to receive a person's index finger, middle finger, ring finger, and baby finger. A handlebar is provided for optimal mechanical leverage to pull the rectangular fuse module from the fusible switching disconnect device even when access to the rectangular fuse module is restricted.

First claim

What is claimed is:

1. A removal tool accessory for a finger-safe rectangular fuse module of a fusible disconnect device,
wherein the finger-safe rectangular fuse module includes a housing having an upper surface, opposing long sides having a length dimension, opposing short sides having a width dimension substantially less than the length dimension of the long sides, and terminal blades extending in spaced-apart parallel planes to one another, wherein the housing projects from the fusible disconnect device and is open and accessible from an exterior of the fusible disconnect device when the terminal blades are engaged to the fusible disconnect device;
the removal tool accessory comprising:
an elongated cross bar having opposing ends and an axial length dimension therebetween that exceeds the length dimension of the long sides of the finger-safe rectangular fuse module, and the elongated cross bar having a lateral width dimension substantially less than the axial length dimension;
first and second fuse engagement arms depending downwardly from the elongated cross bar, the first and second fuse engagement arms respectively spaced inwardly from the opposing ends of the elongated cross bar, the first and second fuse engagement arms defining an interior cavity that receives the exposed housing of the finger-safe rectangular fuse module while the terminal blades are engaged to the fusible disconnect device, the interior cavity spanning the upper surface of the finger-safe rectangular fuse module and receiving respective portions of the opposing short sides of the finger-safe rectangular fuse module;
wherein an interior side of the first and second fuse engagement arms each respectively includes a generally wedge-shaped leading end and first and second retention ledges spaced from the wedge-shaped leading end, the first and second retention ledges engaging corresponding first and second projections on an exterior of each of the opposing short sides of the exposed housing of the finger-safe rectangular fuse module with snap-fit engagement when the portions of the lateral sides are fully received in the interior cavity; and
a hand grip portion integrally formed with and extending upwardly from the elongated cross bar at each of the opposing ends of the elongated cross bar.

2. The removal tool accessory of claim 1 , wherein the hand grip portion comprises a pair of upright arms extending upwardly from the elongated cross bar at each respective opposing end of the elongated cross bar, and an elongated handlebar extending between the pair of upright arms.

3. The removal tool accessory of claim 2 , wherein the elongated handlebar defines a curved gripping surface for fingers of person, the curved gripping surface having convex curvature and concave curvature.

4. The removal tool accessory of claim 3 , wherein the curved gripping surface is designed to allow the person to wrap four fingers of one hand around the curved gripping surface.

5. The removal tool accessory of claim 1 , wherein the first and second fuse engagement arms are resiliently deflectable.

6. The removal tool accessory of claim 1 , wherein the first and second fuse engagement arms are spaced apart from one another by more than 5.33 millimeters.

7. The removal tool accessory of claim 6 , wherein the first and second fuse engagement arms are spaced apart from one another by more than 19.30 millimeters.

8. The removal tool accessory of claim 1 , wherein the first and second fuse engagement arms are spaced apart from one another by at least 47.75 millimeters.

9. The removal tool accessory of claim 8 , wherein the first and second fuse engagement arms are spaced apart from one another by at least 54.10 millimeters.

10. The removal tool accessory of claim 9 , wherein the first and second fuse engagement arms are spaced apart from one another by at least 76.45 millimeters.

11. The removal tool accessory of claim 1 , wherein the upright arms and the elongated handlebar have a lateral width dimension substantially less than the lateral width dimension of the elongated cross bar.

12. A removal tool accessory for an exposed rectangular fuse module projecting from a fusible disconnect device, the rectangular fuse module having long sides and short sides, the removal tool accessory comprising:
a fuse engaging portion comprising an elongated cross bar having opposing ends and a first axial dimension between the opposing ends, the elongated cross bar also having a lateral width dimension substantially less than the first axial dimension;
first and second depending arms extending from the elongated cross bar and respectively spaced apart by a distance less than the first axial dimension and about equal to the long sides of the rectangular fuse module, the first and second depending arms defining an interior cavity therebetween to receive and engage the short sides of the exposed rectangular fuse module;
wherein the first and second depending arms include interior-facing wedge-shaped leading ends including retention ledges to that engage corresponding first and second projections on an exterior of each of the short sides of the exposed rectangular fuse module with snap-fit engagement; and
a hand grip portion integrally formed with the elongated cross bar, the hand grip having a width dimension less than the lateral width dimension of the elongated cross bar.

13. The removal tool accessory of claim 12 , wherein the hand grip portion comprises a pair of upright arms extending from the elongated cross bar at the opposing ends, and an elongated handlebar extending between the pair of upright arms.

14. The removal tool accessory of claim 13 , wherein the enlongated handlebar defines a curved gripping surface for a person's fingers, the curved gripping surface having a convex curvature and a concave curvature.

15. The removal tool accessory of claim 13 , wherein the enlongated handlebar, the pair of upright arms, and the cross bar define an opening that accommodates a four finger engagement of a person in use.

16. The removal tool accessory of claim 12 , wherein the first and second depending arms are resiliently deflectable.

17. The removal tool accessory of claim 12 , wherein the first and second depending arms are spaced apart from one another by more than 5.33 millimeters.

18. The removal tool accessory of claim 17 , wherein the first and second depending arms are spaced apart from one another by more than 19.30 millimeters.

19. The removal tool accessory of claim 12 , wherein the first and second depending arms are spaced apart from one another by at least 47.75 millimeters.

20. The removal tool accessory of claim 19 , wherein the first and second depending arms are spaced apart from one another by at least 54.10 millimeters.

21. The removal tool accessory of claim 20 , wherein the first and second depending arms are spaced apart from one another by at least 76.45 millimeters.

Assignees

• Henricks Michael C
• Li Haimin
• Dunker Jessica A
• Eaton Intelligent Power Ltd

Inventors

• Henricks Michael C
• Li Haimin
• Dunker Jessica A

Classifications

• H01H85/0208 Primary

  Tools for inserting and removing fuses · CPC title

• H01H9/104

  with interlocking mechanism between switch and fuse · CPC title

• H01H21/16

  Adaptation for built-in fuse · CPC title

• H01H85/041 Primary

  characterised by the type · CPC title