Current diverter ring

• US 8,604,653 B2
• Filed: 04/18/2011
• Issued: 12/10/2013
• Est. Priority Date: 06/25/2005
• Status: Active Grant

• Current Assignee: Inpro/Seal LLC (Waukesha Bearings Corporation)
• Original Assignee: Inpro/Seal LLC (Waukesha Bearings Corporation)
• Inventors: Orlowski, David C., Hoehle, Neil F., Tejano, Robert A., Horton, Shawn
• Primary Examiner(s): NGUYEN, TRAN N
• Application Number:
  US13/089,017
• Publication Number:
  US 20110193446A1
• Time in Patent Office: 967 Days
• Field of Search: 310/68.R, 310/232, 310/67.R, 310219-221, 361/212, 361220-222, 439/28, 439/92, 439/95
• US Class Current: 310/68.R
• CPC Class Codes: H01R 39/10 other than with external cylindrical contact surface, e.g. flat slip-rings
• CPC Class Codes: H01R 39/64 Devices for uninterrupted current collection
• CPC Class Codes: H02K 11/40 Structural association with grounding devices
• CPC Class Codes: H02K 5/1732 radially supporting the rotary shaft at both ends of the rotor H02K5/1737 takes precedence

Abstract

The current diverter rings and bearing isolators serve to dissipate an electrical charge from a rotating piece of equipment to ground, such as from a motor shaft to a motor housing. One embodiment of the current diverter ring includes an inner body and an outer body configured to clamp at least one conductive segment between them. In the preferred embodiments of the current diverter ring, the conductive segments are positioned in radial channels. The outer body may be affixed to a shaft, a motor housing, a bearing isolator, or other structure. The bearing isolator may incorporate a retention chamber for holding conductive segments within the stator of the bearing isolator, or the bearing isolator may be fashioned with a receptor groove into which a current diverter ring may be mounted.

Claims

1. A radial current diverter ring comprising:

a. a body that is substantially ring-shaped;

b. a main aperture positioned in the center of said main body;

c. a plurality of radial channels, wherein each said radial channel extends from the radial exterior surface of said body to the radial interior surface of said body;

d. a radial channel shelf, wherein said radial channel shelf is positioned in one of said radial channels adjacent the radial interior surface of said main body; and

,

e. a conductive assembly positioned in one of said radial channels, wherein a contact portion of said conductive assembly protrudes from said radial channel radially inward past said radial interior surface.

2. The radial current diverter ring according to claim 1 wherein said plurality of radial channels is further defined as three radial channels.

3. The radial current diverter ring according to claim 1 wherein said plurality of radial channels is further defined as four radial channels.

4. The radial current diverter ring according to claim 1 wherein said plurality of radial channels is further defined as five radial channels.

5. The radial current diverter ring according to claim 1 wherein said plurality of radial channels is further defined as six radial channels.

6. The radial current diverter ring according to claim 1 wherein said plurality of radial channels is further defined as seven radial channels.

7. The radial current diverter ring according to claim 1 wherein said plurality of radial channels is further defined as eight radial channels.

8. The radial current diverter ring according to claim 2 wherein said plurality of radial channels is further defined as being equally spaced about said body.

9. The radial current diverter ring according to claim 3 wherein said plurality of radial channels is further defined as being equally spaced about said body.

10. The radial current diverter ring according to claim 4 wherein said plurality of radial channels is further defined as being equally spaced about said body.

11. The radial current diverter ring according to claim 5 wherein said plurality of radial channels is further defined as being equally spaced about said body.

12. The radial current diverter ring according to claim 6 wherein said plurality of radial channels is further defined as being equally spaced about said body.

13. The radial current diverter ring according to claim 7 wherein said plurality of radial channels is further defined as being equally spaced about said body.

14. The radial current diverter ring according to claim 1 wherein said current diverter ring further comprises a plurality of conductive assemblies corresponding to said plurality of radial channels.

15. The radial current diverter ring according to claim 1 wherein a radial exterior surface of said body is further defined as being angled in the axial direction such that said radial current diverter ring may be securely pressed into either a receptor groove formed in a bearing isolator or an aperture formed in a motor housing.

16. The radial current diverter ring according to claim 1 wherein said body further comprises a plurality of mounting apertures positioned in an axial face thereof, and wherein a plurality of fasteners and straps cooperatively engage said plurality of mounting apertures.

17. The radial current diverter ring according to claim 1 wherein said conductive assembly comprises a carbon-based filament.

18. The radial current diverter ring according to claim 1 wherein said conductive assembly comprises a binder and a contact portion, and wherein said contact portion extends into said main aperture.

19. The radial current diverter ring according to claim 1 wherein said body is further defined as being constructed of bronze.

20. The radial current diverter ring according to claim 1 wherein said body is further defined as being positioned adjacent a body of a second radial current diverter ring.