Spark capture system for use with cutting torch

Patent metadata

Field	Value
Publication number	US-10639750-B2
Application number	US-201815952903-A
Country	US
Kind code	B2
Filing date	Apr 13, 2018
Priority date	Apr 14, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

A spark absorbing system for use with a cutting torch, comprises a cap having at least one spark opening therethrough and a spark capture unit coupled to the cap and positioned to capture sparks passing through the spark opening. The spark capture unit may comprise a tube extending from the cap and may include an outlet and a flow-reduction element positioned between the cap and the outlet and/or a spark accumulator between the cap and the spark capture unit. The flow-reduction element may comprise at least one baffle, screen or mesh. The spark absorbing system may further include a spark ramp extending from the cap opposite the spark capture unit and/or a shield, which may define a cutting space between the shield and the cap.

First claim

What is claimed is:

1. A method comprising:
supplying a concrete segment, the concrete segment having an end, wherein the concrete segment end includes a pocket;
extending a strand from the concrete segment, wherein the strand extends outwardly through the pocket;
providing a cutting torch having a cutting head;
providing a spark absorbing system, the spark absorbing system comprising:
a cap, wherein the cap encloses the pocket and includes a spark opening; and
a spark capture unit, the spark capture unit attached to or formed integrally with the cap, wherein the spark capture unit is configured to capture sparks that pass through the spark opening;

placing the cutting head and the spark absorbing system at the strand;
operating the cutting torch; and
capturing or deflecting sparks generated from the cutting torch using the spark absorbing system.

2. A method for cutting a strand, comprising:
a) supplying a concrete segment, the concrete segment having an end;
b) extending a strand from the concrete segment;
c) providing a cutting torch having a cutting head;
d) providing a spark absorbing system, the spark absorbing system comprising:
a cap having at least one spark opening therethrough; and
a spark capture unit, the spark capture unit attached to or formed integrally with the cap, wherein the spark capture unit further includes a spark ramp extending from the cap and positioned to receive sparks emitted at the cutting head, wherein the spark ramp is configured to divert gas and sparks emitted at the cutting torch toward the spark opening;

e) placing the cutting head and the spark absorbing system at the strand;
f) operating the cutting torch; and
g) capturing or deflecting sparks generated from the cutting torch using the spark absorbing system.

3. The method of claim 2 wherein the cap is adapted to engage the cutting torch.

4. The method of claim 2 wherein the spark capture unit includes an outlet and is configured to capture sparks passing through the spark opening.

5. The method of claim 4 wherein the spark capture unit further includes a flow-reduction element positioned within the spark capture unit between the cap and the outlet and wherein the flow-reduction element comprises at least one baffle, screen or mesh.

6. The method of claim 4 , wherein step f) includes generating gas and sparks at the cutting torch and wherein step g) comprises:
allowing the generated gas and sparks to pass through the spark opening,
capturing sparks that pass through the spark opening in the spark capture unit, and
allowing the generated gas to exit through the outlet.

7. The method of claim 4 , further including a spark accumulator between the cap and the spark capture unit, wherein spark accumulator comprises a chamber adjacent to the spark opening such that sparks passing through the spark opening enter the spark accumulator.

8. The method of claim 7 , wherein step f) includes generating gas and sparks at the cutting torch and wherein step g) comprises:
allowing the generated gas and sparks to pass through the spark opening;
capturing sparks that pass through the spark opening in the spark accumulator and the spark capture unit; and
allowing the generated gas to exit through the outlet.

9. The method of claim 7 wherein, wherein step f) includes generating gas and sparks at the cutting torch and wherein step g) comprises:
deflecting the generated sparks toward the spark opening using the spark ramp;
allowing the generated gas and sparks to pass through the spark opening;
capturing sparks that pass through the spark opening in the spark accumulator and the spark capture unit; and
allowing the generated gas to exit through the outlet.

10. The method of claim 2 wherein the spark absorbing system further includes a shield coupled to the spark ramp and generally parallel to the cap.

11. The method of claim 2 wherein step e) includes placing the shield adjacent to the concrete segment.

12. The method of claim 2 wherein the cap comprises one or more mesh screens.

13. The method of claim 1 wherein the cap has at least one spark opening therethrough and is adapted to engage the cutting torch.

14. The method of claim 13 wherein the spark capture unit includes an outlet and is configured to capture sparks passing through the spark opening.

15. The method of claim 14 wherein the spark capture unit further includes a flow-reduction element positioned within the spark capture unit between the cap and the outlet and wherein the flow-reduction element comprises at least one baffle, screen or mesh.

16. The method of claim 14 wherein the step of operating the cutting torch includes generating gas and sparks at the cutting torch and wherein the step of capturing or deflecting sparks comprises:
allowing the generated gas and sparks to pass through the spark opening,
capturing sparks that pass through the spark opening in the spark capture unit, and
allowing the generated gas to exit through the outlet.

17. The method of claim 14 , further including a spark accumulator between the cap and the spark capture unit, wherein spark accumulator comprises a chamber adjacent to the spark opening such that sparks passing through the spark opening enter the spark accumulator.

18. The method of claim 17 , wherein the step of operating the cutting torch includes generating gas and sparks at the cutting torch and wherein the step of capturing or deflecting sparks comprises:
allowing the generated gas and sparks to pass through the spark opening;
capturing sparks that pass through the spark opening in the spark accumulator and the spark capture unit; and
allowing the generated gas to exit through the outlet.

19. The method of claim 17 wherein the spark absorbing system further includes a spark ramp extending from the cap and positioned to direct sparks from the cutting torch toward the spark opening, wherein the spark ramp is configured to divert gas and sparks emitted at the cutting torch toward the spark opening.

20. The method of claim 19 wherein, wherein the step of operating the cutting torch includes generating gas and sparks at the cutting torch and wherein the step of capturing or deflecting sparks comprises:
deflecting the generated sparks toward the spark opening using the spark ramp;
allowing the generated gas and sparks to pass through the spark opening;
capturing sparks that pass through the spark opening in the spark accumulator and the spark capture unit; and
allowing the generated gas to exit through the outlet.

21. The method of claim 1 wherein the spark absorbing system further includes a shield coupled to the spark ramp and generally parallel to the cap and wherein the step of placing the cutting head and the spark absorbing system at the strand includes placing the shield in the pocket.

Assignees

• Sorkin Felix

Inventors

• Sorkin Felix

Classifications

• B23K37/0241

  Attachments between the welding or cutting element and the carriage · CPC title

• B23K2101/32

  Wires · CPC title

• B23K10/006

  Control circuits therefor · CPC title

• B23K7/005

  Machines, apparatus or equipment specially adapted for cutting curved workpieces · CPC title

• E04C5/122

  the tensile members are anchored by wedge-action · CPC title