IP Library Granted Patent US 10,957,992
Granted Patent B2
US 10,957,992 · App. 16/449,577 · Granted Mar 23, 2021

Solderless connection to Litz wire

Inventors: Kurt Allan Randolph (Etters, PA); Jeffrey Richard Ruth (Middletown, PA); Paul Walter McDowell (Fishers, IN)
Assignee: TE Connectivity Services GmbH
H01R4/18
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,957,992
App. No.
16/449,577
Granted
Mar 23, 2021
Kind
B2
Abstract

An electrical contact assembly having a braided Litz wire and an electrical contact. The electrical contact has a contact portion and a Litz wire termination portion. The contact portion is configured to make an electrical connection with a mating contact. The Litz wire termination portion has serrations which engage the braided Litz wire. The Litz wire termination portion has a length to allow the Litz wire termination portion to make an electrical connection with each individual wire of the Litz wire.

Claims (26)

1. An electrical contact assembly comprising:

a braided Litz wire having multiple wire strands which are individually insulated;

an electrical contact having a contact portion and a Litz wire termination portion, the contact portion is configured to make an electrical connection with a mating contact;

the Litz wire termination portion having serrations which penetrate the individually insulated multiple wire strands of the braided Litz wire, the Litz wire termination portion having a length to allow the Litz wire termination portion to make an electrical and mechanical connection with each individual wire strand of the multiple wire strands of the Litz wire.

2. The electrical contact assembly as recited in claim 1 , wherein the serrations of the Litz wire termination portion extend in a direction with is perpendicular to a longitudinal axis of the Litz wire termination portion.

3. The electrical contact assembly as recited in claim 1 , wherein each serration has a top wall with tapered sidewalls which extend therefrom.

4. The electrical contact assembly as recited in claim 1 , wherein each serration has a top wall with a flat surface.

5. The electrical contact assembly as recited in claim 1 , wherein the serrations have a depth of between 0.002 inches and 0.008 inches.

6. The electrical contact assembly as recited in claim 1 , wherein the serrations have a centerline to centerline spacing of 0.02 inches.

7. The electrical contact assembly as recited in claim 1 , wherein the Litz wire termination portion has a length which is at least two times a length of a braided section of the braided Litz wire.

8. The electrical contact assembly as recited in claim 1 , wherein the contact portion is a tab.

9. The electrical contact assembly as recited in claim 1 , wherein the Litz wire termination portion is crimped to the Litz wire.

10. The electrical contact assembly as recited in claim 9 , wherein the Litz wire termination portion has a bottom wall crimped in the shape of a w-crimp.

11. The electrical contact assembly as recited in claim 10 , wherein the Litz wire termination portion has a top wall crimped in the shape of an inverted w-crimp.

12. An electrical contact assembly comprising:

a braided Litz wire having multiple wire strands which are individually insulated;

an electrical contact having a contact portion and a Litz wire termination portion, the contact portion is configured to make an electrical connection with a mating contact;

the Litz wire termination portion having serrations which engage the individually insulated multiple wire strands of the braided Litz wire, the Litz wire termination portion having a length which is at least two times a length of a braided section of the braided Litz wire to allow the Litz wire termination portion to make an electrical and mechanical connection with each individual wire strand of the multiple wire strands of the Litz wire.

13. The electrical contact assembly as recited in claim 12 , wherein the serrations of the Litz wire termination portion extend in a direction with is perpendicular to a longitudinal axis of the Litz wire termination portion.

14. The electrical contact assembly as recited in claim 13 , wherein the Litz wire termination portion is crimped to the Litz wire.

15. The electrical contact assembly as recited in claim 14 , wherein the Litz wire termination portion has a bottom wall crimped in the shape of a w-crimp.

16. The electrical contact assembly as recited in claim 15 , wherein the Litz wire termination portion has a top wall crimped in the shape of an inverted w-crimp.

17. The electrical contact assembly as recited in claim 12 , wherein the contact portion is a tab.

18. The electrical contact assembly as recited in claim 12 , wherein each serration has a top wall with tapered sidewalls which extend therefrom.

19. The electrical contact assembly as recited in claim 18 , wherein the top wall has a flat surface.

20. The electrical contact assembly as recited in claim 19 , wherein the serrations have a centerline to centerline spacing of 0.02 inches.

Assignments (3)
MERGER Recorded Jun 7, 2022
From: TE CONNECTIVITY SERVICES GMBH
To: TE CONNECTIVITY SOLUTIONS GMBH
Reel/Frame 060305/0923 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 17, 2021
From: TE CONNECTIVITY CORPORATION
To: TE CONNECTIVITY SERVICES GMBH
Reel/Frame 055326/0909 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 29, 2020
From: RANDOLPH, KURT ALLAN; RUTH, JEFFREY RICHARD; MCDOWELL, PAUL WALTER
To: TE CONNECTIVITY CORPORATION
Reel/Frame 053919/0272 →