Flame Gun with Flow Control Ring

Abstract

A flame gun with a flow control ring includes a body with a gas outlet assembly disposed therein. The gas outlet assembly includes a flow regulator being rotatable about an axis. A flow controller is coupled to and operably rotatable relative to the body. The flow controller is configured to drive the flow regulator rotationally and includes a connecting portion connected to the flow regulator. The flow controller includes an input portion disposed in a spaced relationship with the connecting portion and includes at least one link arm interconnecting and extending between the connecting portion and the input portion. The input portion is disposed circumferentially and surrounds at least half an outer periphery of the body.

Claims

1. A flame gun with a flow control ring comprising: a body including a gas outlet assembly disposed therein and the gas outlet assembly including a flow regulator being rotatable about an axis; and a flow controller coupled to and operably rotatable relative to the body, wherein the flow controller is configured to drive the flow regulator rotationally and includes a connecting portion connected to the flow regulator, wherein the flow controller includes an input portion disposed in a spaced relationship with the connecting portion and includes at least one link arm interconnecting and extending between the connecting portion and the input portion, and wherein the input portion is disposed circumferentially and surrounds at least half an outer periphery of the body.

2. The flame gun as claimed in claim 1, wherein the outer periphery of the body has an annular periphery on which the input portion completely surrounds and is disposed.

3. The flame gun as claimed in claim 1, wherein the flow regulator is connected to the flow controller with no relative rotation therebetween.

4. The flame gun as claimed in claim 3, wherein the flow regulator has a first engaging structure including first ridges and a first recess between two adjacent first ridges, and wherein the connecting portion of the flow controller has a second engaging structure including second ridges and a second recess between adjacent two adjacent second ridges and one of the first ridges is disposed between the two adjacent second ridges and engaged in the second recess.

5. The flame gun as claimed in claim 3, wherein the flow regulator is in thread engagement with the body.

6. The flame gun as claimed in claim 5, wherein the body includes a grip portion and a flame head portion, wherein the grip portion includes a fuel canister disposed therein, wherein the gas outlet assembly has a first end connected to and in fluid communication with the fuel canister and a second end connected to and in fluid communication with a fuel passage of the flame head portion, and wherein the flow regulator is disposed and movable to adjust the size of an opening between the fuel passage and the fuel canister.

7. The flame gun as claimed in claim 1, wherein the body includes a first connecting structure and a first receiving structure adjacent to each other and arranged along the outer periphery of the body, wherein the flow controller is engaged with and rotatable relative to the first connecting structure and includes a peripheral section disposed in the first receiving structure.

8. The flame gun as claimed in claim 7, wherein the body includes a second connecting structure and a second receiving structure adjacent to each other and arranged along the outer periphery of the body, wherein the flow controller is engaged with and rotatable relative to the second connecting structure and includes another peripheral section disposed in the second receiving structure, wherein the first receiving structure is disposed between first ends of the first and second connecting structures and the second receiving structure is disposed between second ends of the first and second connecting structures respectively, and wherein the at least one link arm includes first and second link aims with ends movable in the first and second receiving structures respectively upon rotation of the flow controller relative to the body.

9. The flame gun as claimed in claim 8, wherein the body includes a positioning structure disposed between the first and second connecting structures, and wherein the flow controller is rotatable relative to the body between a first position in which the positioning structure is abutted against the first link arm and disposed away from the second link arm, and a second position in which the positioning structure is disposed away from the first link arm and abutted against the second link arm.

10. The flame gun as claimed in claim 8, wherein the first and second link arms are disposed oppositely diametrically.

11. The flame gun as claimed in claim 9, wherein the first and second link aims are disposed oppositely diametrically.

12. The flame gun as claimed in claim 3, wherein the body includes a first connecting structure and a first receiving structure adjacent to each other and arranged along the outer periphery of the body, wherein the flow controller is engaged with and rotatable relative to the first connecting structure and includes a peripheral section disposed in the first receiving structure.

13. The flame gun as claimed in claim 6, wherein the body includes a first connecting structure and a first receiving structure adjacent to each other and arranged along the outer periphery of the body, wherein the flow controller is engaged with and rotatable relative to the first connecting structure and includes a peripheral section disposed in the first receiving structure.

14. The flame gun as claimed in claim 12, wherein the body includes a second connecting structure and a second receiving structure adjacent to each other and arranged along the outer periphery of the body, wherein the flow controller is engaged with and rotatable relative to the second connecting structure and includes another peripheral section disposed in the second receiving structure, wherein the first receiving structure is disposed between first ends of the first and second connecting structures and the second receiving structure is disposed between second ends of the first and second connecting structures respectively, and wherein the at least one link arm includes first and second link arms with ends movable in the first and second receiving structures respectively upon rotation of the flow controller relative to the body.

15. The flame gun as claimed in claim 13, wherein the body includes a second connecting structure and a second receiving structure adjacent to each other and arranged along the outer periphery of the body, wherein the flow controller is engaged with and rotatable relative to the second connecting structure and includes another peripheral section disposed in the second receiving structure, wherein the first receiving structure is disposed between first ends of the first and second connecting structures and the second receiving structure is disposed between second ends of the first and second connecting structures respectively, and wherein the at least one link arm includes first and second link arms with ends movable in the first and second receiving structures respectively upon rotation of the flow controller relative to the body.

16. The flame gun as claimed in claim 14, wherein the body includes a positioning structure disposed between the first and second connecting structures, and wherein the flow controller is rotatable relative to the body between a first position in which the positioning structure is abutted against the first link arm and disposed away from the second link arm, and a second position in which the positioning structure is disposed away from the first link arm and abutted against the second link aim.

17. The flame gun as claimed in claim 15, wherein the body includes a positioning structure disposed between the first and second connecting structures, and wherein the flow controller is rotatable relative to the body between a first position in which the positioning structure is abutted against the first link arm and disposed away from the second link arm, and a second position in which the positioning structure is disposed away from the first link arm and abutted against the second link arm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 is a perspective view of a flame gun with flow control in accordance with the present invention.

[0012] FIG. 2 is an exploded perspective view of the flame gun of FIG. 1.

[0013] FIG. 3 is a cross-sectional view of the flame gun of FIG. 1.

[0014] FIG. 4 is a cross-sectional view illustrating the flame gun of FIG. 1 subject to a first flow control setting.

[0015] FIG. 5 is a cross-sectional view illustrating the flame gun of FIG. 1 subject to a second flow control setting.

DETAILED DESCRIPTION OF THE INVENTION

[0016] FIGS. 1 through 5 show a flame gun 10 with a flow control ring in accordance with the present invention.

[0017] The flame gun 10 includes a body 20 including a gas outlet assembly 21 disposed therein. The gas outlet assembly 21 includes a flow regulator 211 being rotatable about an axis C. The flow regulator 211 is in thread engagement with the body 20. The body 20 includes a grip portion 22 and a flame head portion 23, wherein the grip portion 22 includes a fuel canister 24 disposed therein. The gas outlet assembly 21 has a first end connected to and in fluid communication with the fuel canister 24 and a second end connected to and in fluid communication with a fuel passage 231 of the flame head portion 23. The flow regulator 211 is disposed and movable to adjust the size of an opening between the fuel passage 231 and the fuel canister 24. The body 20 includes a first connecting structure 221 and a first receiving structure 222 adjacent to each other and arranged along the outer periphery of the body 20. The body 20 includes a second connecting structure 223 and a second receiving structure 224 adjacent to each other and arranged along the outer periphery of the body 20. The first receiving structure 222 is disposed between first ends of the first and second connecting structures 221 and 223 and the second receiving structure 224 is disposed between second ends of the first and second connecting structures 221 and 223 respectively. The body 20 includes a positioning structure 241 disposed between the first and second connecting structures 221 and 223.

[0018] Further, the flame gun 10 includes a flow controller 30 coupled to and operably rotatable relative to the body 20. The flow controller 30 is engaged with and rotatable relative to the first connecting structure 221 and includes a peripheral section disposed in the first receiving structure 222. The flow controller 30 is engaged with and rotatable relative to the second connecting structure 223 and includes another peripheral section disposed in the second receiving structure 224. The flow controller 30 is configured to drive the flow regulator 211 rotationally. The flow controller 30 includes a connecting portion 31 connected to the flow regulator 211. The flow regulator 211 is connected to the flow controller 30 with no relative rotation therebetween. The flow regulator 211 has a first engaging structure 212 including first ridges and a first recess between two adjacent first ridges. The connecting portion 31 has a second engaging structure 312 including second ridges and a second recess between adjacent two adjacent second ridges and one of the first ridges is disposed between the two adjacent second ridges and engaged in the second recess. The second engaging structure 312 is formed on a periphery of a hole 311 defined by the connecting portion 31.

[0019] The flow controller 30 includes an input portion 33 disposed in a spaced relationship with the connecting portion 31 and includes at least one link arm 32 and 34 interconnecting and extending between the connecting portion 31 and the input portion 33. The input portion 33 is disposed circumferentially and surrounds at least half an outer periphery of the body 20. The outer periphery of the body 20 has an annular periphery on which the input portion 33 completely surrounds and is disposed. The at least one link aim 32 and 34 includes a first link arm 32 and a second link aim 34. The first and second link arms 32 and 34 are disposed oppositely diametrically.

[0020] The first and second link arms 32 and 34 are with ends movable in the first and second receiving structures 222 and 224 respectively upon rotation of the flow controller 30 relative to the body 20. The flow controller 30 is rotatable relative to the body 20 between a first position in which the positioning structure 241 is abutted against the first link arm 32 and disposed away from the second link arm 34, and a second position in which the positioning structure 241 is disposed away from the first link arm 32 and abutted against the second link arm 34.

[0021] In view of the forgoing, the user can easily rotate the flow controller 30 through the above structure. Since the input portion 33 surrounds the body 20, when the user holds the grip portion 22, the flow controller 30 can be operated by the index finger or the thumb and will not restrain the posture and angle of the hand during the adjustment operations. In particular, the flow controller 30 is applicable to both right and left hands, and the same effect can be achieved for all users.

[0022] The foregoing is merely illustrative of the principles of this invention and various modifications can be made by those skilled in the art without departing from the scope and spirit of the invention.