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US 5,491,321 AGranted
Welding gun assembly
AssigneeTweco Products, Inc.
InventorsKyle H. Stuart, Dale R. Bervig
Life of this patent
Estimating the term…
Abstract
A welding gun assembly including a contact tip and gas diffuser having increased electrical conductivity and heat dissipation and a spool gun assembly having a rotatable and articulatable conductor tube mounted on the handle member thereof and a smoke gun assembly with a manually adjustable vacuum control member on the handle member and wherein the handle member conforms to the hand of the operator and includes an elongate trigger member thereon.
Claims37
A welding gun assembly including:
- A. A handle member having forward and rear end portions thereon and a means for actuating the flow of a welding wire, inert gas and electrical current therethrough;
- B. Said welding wire being supplied by a spool member operatively associated with said assembly;
- C. Said inert gas being supplied by a gas source operatively associated with said assembly;
- D. Said electrical current being supplied by a power source operatively associated with said assembly;
- E. A generally tubular conductor tube having forward and rear end portions and which extends from said forward end portions of said handle member and wherein said welding wire, inert gas and electrical current are received therethrough;
- F. A generally cylindrical gas diffuser having a forward end portion and a rear end portion operatively associated with said forward end portion of said conductor tube, said gas diffuser being formed of a material which conducts said electrical current therethrough and is shaped to receive said welding wire therethrough, said gas diffuser including a first passageway which extends through at least a portion thereof and a retaining means which extends inwardly into said passageway;
- and
- G. A generally cylindrical contact tip having forward and rear end portions, said contact tip including a circumferential channel on said rear end portion thereof, a tangential flat surface extending along at least a portion of said rear end portion and intersecting said channel, and a circumferential shoulder disposed between said forward end portion and said channel, said channel being sized to conductively receive said retaining means therein such that electrical current may be conducted therebetween, said shoulder being adapted for abutting contact with said forward end portion of said gas diffuser when said retaining means is received in said channel.
5 more elements
A welding gun assembly including:
- A. A handle member having forward and rear end portions thereon wherein said rear end portion is oriented approximately 10 degrees offset from said forward end portion, said handle member including an elongate trigger member thereon and said trigger member extends between a lower surface of said forward end portion and a lower surface of said rear end portion, said trigger member being movable between actuated and non-positions wherein the flow of a welding wire, inert gas and electrical current is enabled through the handle member in the actuated position of said trigger member;
- B. Said welding wire being supplied by a spool member when said trigger member is actuated;
- C. Said inert gas being supplied by a gas source when said trigger member is actuated;
- D. Said electrical current being supplied by a power source when said trigger member is actuated;
- E. A generally tubular conductor tube having forward and rear end portions and which operatively extends from said forward end portion of said handle member and wherein said welding wire, inert gas and electrical current are received therethrough;
- F. An elongate gas diffuser having a forward end portion and a rear end portion operatively associated with said forward end portion of said conductor tube, said gas diffuser being formed of a material which conducts electrical current therethrough, said diffuser having an elongate passageway therethrough which receives said welding wire therethrough, said inert gas passing through at least a portion of said passageway and through one or more ports in said gas diffuser;
- G. Retaining means on the diffuser projecting into said passageway;
- and
- H. A generally cylindrical contact tip having a forward end portion and a rear end portion which is receivable in the passageway in the forward end portion of the gas diffuser, said contact tip including a circumferential channel on said rear end portion thereof, a tangential flat surface extending along at least a portion of said rear end portion and intersecting said channel, and a circumferential shoulder disposed between said forward end portion and said channel, said channel being sized to conductively receive said retaining means therein such that electrical current may be conducted therebetween, said shoulder being adapted for abutting contact with said forward end portion of said gas diffuser when said retaining means is received in said channel.
6 more elements
A smoke gun assembly having a power source, a source of inert gas and a supply of welding wire operatively associated therewith, said assembly including:
- A. a vacuum assembly;
- B. an elongate contact tip having forward and rear end portions thereon, said forward end portion having a diameter greater than the diameter of said rear end portion whereby a circumferential shoulder is formed therebetween;
- C. a circumferential channel on said rear end portion of said contact tip, said channel being spaced rearwardly from said shoulder and being adapted to receive retaining means on the gun to retain the contact tip on the gun;
- D. a generally flat surface oriented tangentially with respect to the circumference of said rear end portion, said flat surface intersecting a portion of said channel;
- and
- E. an elongate passageway extending lengthwise through said contact tip wherein said contact tip is adapted to receive a welding wire therethrough.
3 more elements
Dependencies are inferred from the claim text.