Brazed fifth wheel hitch assembly components and method of constructing same

Patent metadata

Field	Value
Publication number	US-11229969-B2
Application number	US-201816137137-A
Country	US
Kind code	B2
Filing date	Sep 20, 2018
Priority date	Sep 21, 2017
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

A brazing connection includes a first component comprising a first material and including a first connection portion, a second component comprising a second material and including a second connection portion, a heating element that is electrically conductive and electrically resistant positioned between the first connection portion of the first component and the second connection portion of the second component, where the heating element is configured to transmit heat when conducting an electrical current, and a brazing material configured to melt when receiving heat from the heating element, thereby connecting the first component to the second component.

First claim

The invention claimed is:

1. A fifth wheel hitch assembly locking jaw, comprising:
a locking jaw comprising a first material and including a first connection surface;
a wear plate comprising a second material and including a second connection surface and an abutment surface, wherein the abutment surface is configured to abut a kingpin of a fifth wheel hitch assembly;
a heating element that is electrically conductive and electrically resistant positioned between the first connection surface of the locking jaw and the second connection surface of the wear plate, where the heating element is configured to transmit heat when conducting an electrical current; and
a brazing material seperate from the heating element and configured to melt when receiving heat from the heating element, thereby connecting the locking jaw the wear plate and such that the heating element remains between the locking jaw and the wear plate.

2. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the heating element contacts the first connection surface of the locking jaw and the second connection surface of the wear plate, thereby spacing the second connection surface from the first connection surface.

3. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the heating element includes a wire.

4. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the heating element includes a continuous length, and wherein the heating element is configured to make multiple passes between the first connection surface and the second connection surface.

5. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the brazing material comprises a paste.

6. The fifth wheel hitch assembly locking jaw of claim 5 , wherein the paste includes a flux material.

7. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the second material is different than the first material.

8. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the heating element includes an electrically conductive portion and an insulating portion positioned between the electrically conductive portion and at least one of the first connection portion and the second connection portion.

9. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the heating element has a thickness of less than or equal to about 0.040 inches.

10. The fifth wheel hitch assembly locking jaw of claim 9 , wherein the thickness of the heating element is between about 0.003 inches and about 0.010 inches.

11. The fifth wheel hitch assembly locking jaw of claim 10 , wherein the thickness of the heating element is between about 0.005 inches and about 0.007 inches.

12. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the first connection portion includes a recess, and wherein the second connection portion is received within the recess.

13. The fifth wheel hitch assembly locking jaw of claim 1 , wherein the brazing material and the heating element cooperate to form a mat.

14. The fifth wheel hitch assembly locking jaw of claim 13 , wherein the mat is flexible.

15. The fifth wheel hitch assembly locking jaw of claim 13 , wherein the mat is includes a flux material.

16. A method for forming a brazing connection, comprising:
providing the fifth wheel assembly locking jaw of claim 1 ;
positioning the heating element between the first connection surface of the locking jaw and the second connection surface of the wear plate;
heating the heating element by conducting an electrical current through the heating element; and
connecting the locking jaw and the wear plate by melting the brazing material with the heating element such that the heating element remains between the locking jaw and the wear plate subsequent to connecting the locking jaw and the wear plate.

17. The method for forming the brazing connection of claim 16 , wherein the heating element is not substantially defined during the heating of the heating element.

Assignees

• Saf Holland Inc

Inventors

• Schutt Randy
• Ainsworth Brian E

Classifications

• B62D53/08 Primary

  Fifth wheel traction couplings {(tractors for handling trailers in terminals B62D49/007)} · CPC title

• B23K3/053

  using resistance wires · CPC title

• B62D53/10

  with means for preventing accidental uncoupling · CPC title

• B23K1/0004

  Resistance soldering · CPC title

• B23K1/0008 Primary

  specially adapted for particular articles or work · CPC title