US3688069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding head apparatus
Assignee: Individual
•
Filing: 1970-11-23
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Granted: 1972-08-29
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Expires: 1990-11-23
Abstract
Abstract A welding head, to effect welding of cylindrical tubes wherein the head includes a fixed housing and a rotatable housing, a welding electrode contained wherein the rotatable housing, both the fixed housing and rotatable housing having alignable openings through the wall structure of each to permit entry and removal of the tube, passage structure located within both the fixed housing and rotatable housing to continuously supply inert gas to the molten puddle at the welding location, the passage structure effecting continuous application of the gas to the molten puddle during rotational movement of the rotatable housing with respect to the fixed housing.
Inventors
- 👤 Gasparas Kazlauskas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:35
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0282; B23K9/0286
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
315 words
A welding head for welding separated sections of cylindrical tubing comprising; a fixed housing having a first longitudinal Aperture therein having an interior annular wall; a rotatable housing being rotatably mounted within said first aperture, said rotatable housing having an exterior annular wall, said interior wall of said fixed housing and said exterior wall of said movable housing being in an abutting relationship, said rotatable housing having a second longitudinal aperture therein, said second longitudinal aperture to be capable of being located to the attached ends of said tubing; means to permit transverse access of said tubing into said second aperture; said means comprises a first opening within the wall structure of said fixed housing and a second opening within the wall structure of said rotatable housing, said first and second openings being alignable to permit access of said tubing; a welding electrode mounted within said rotatable housing and communicating with said second longitudinal opening, a chamber located adjacent said electrode to effect supplying of an inert gas to the welding area; and gas passage structure formed in both said interior wall of said fixed housing and said exterior wall of said rotatable housing to facilitate the supplying of inert gas from an external source to said chamber, said gas passage structure including first passageways formed within said fixed housing and second passageways formed within said rotatable housing, a first pair of valves circumferentially spaced apart and connected to said first passageways comprising means for controlling, the conducting of gas through said first passageways located within said fixed housing, a second pair of valves circumferentially spaced apart and connected to said second passageways comprising means for controlling the conducting of gas through said second passageways, said first pair of valves comprising means closable when directly aligned with said second opening, said second pair of valves comprising means closable when directly aligned with said first opening.
Claim 2
Dependent Claim
315 words
A welding head for welding separated sections of cylindrical tubing comprising; a fixed housing having a first longitudinal Aperture therein having an interior annular wall; a rotatable housing being rotatably mounted within said first aperture, said rotatable housing having an exterior annular wall, said interior wall of said fixed housing and said exterior wall of said movable housing being in an abutting relationship, said rotatable housing having a second longitudinal aperture therein, said second longitudinal aperture to be capable of being located to the attached ends of said tubing; means to permit transverse access of said tubing into said second aperture; said means comprises a first opening within the wall structure of said fixed housing and a second opening within the wall structure of said rotatable housing, said first and second openings being alignable to permit access of said tubing; a welding electrode mounted within said rotatable housing and communicating with said second longitudinal opening, a chamber located adjacent said electrode to effect supplying of an inert gas to the welding area; and gas passage structure formed in both said interior wall of said fixed housing and said exterior wall of said rotatable housing to facilitate the supplying of inert gas from an external source to said chamber, said gas passage structure including first passageways formed within said fixed housing and second passageways formed within said rotatable housing, a first pair of valves circumferentially spaced apart and connected to said first passageways comprising means for controlling, the conducting of gas through said first passageways located within said fixed housing, a second pair of valves circumferentially spaced apart and connected to said second passageways comprising means for controlling the conducting of gas through said second passageways, said first pair of valves comprising means closable when directly aligned with said second opening, said second pair of valves comprising means closable when directly aligned with said first opening.
Claim 3
Dependent Claim
23 words
A welding head as defined in claim 1 wherein: said second valves remaining closed upon movement a predetermined distance past said first opening.
Claim 4
Dependent Claim
305 words
In combination with a cylindrical tubular structure upon which it is desired to effect a circumferential weld, a welding head apparatus wherein: said welding head apparatus including means to permit transverse access of said tubular structure within said welding head apparatus; said welding head apparatus includes a fixed housing and a rotatable housing, said rotatable housing being rotatingly supported within said fixed housing, said rotatable housing having an exterior annular wall which abuts an interior annular wall of said fixed housing; said means comprises a first opening within the wall structure of said fixed housing and a second opening within the wall structure of said rotatable housing, said first and second openings being alignable to permit access of said tubular structure; a welding electrode mounted within said rotatable housing and being located directly adjacent said tubular structure with such positioned within said welding head apparatus; a chamber located adjacent said electrode to effect supplying of an inert gas to the welding area; and gas passage structure formed in both said interior wall of said fixed housing and said exterior wall of said rotatable housing to facilitate the supplying of inert gas from an external source to said chamber, said gas passage structure including first passageways formed within said fixed housing and second passageways formed within said rotatable housing, a first pair of valves circumferentially spaced apart and connected to said first passageways comprising means for controlling the conducting of gas through said first passageways located within said fixed housing, a second pair of valves circumferentially spaced apart and connected to said second passageways comprising means for controlling the conducting of gas through said second passageways, said first pair of vaLves comprising means closable when directly aligned with said second opening, said second pair of valves comprising means closable when directly aligned with said first opening.
Claim 5
Dependent Claim
305 words
In combination with a cylindrical tubular structure upon which it is desired to effect a circumferential weld, a welding head apparatus wherein: said welding head apparatus including means to permit transverse access of said tubular structure within said welding head apparatus; said welding head apparatus includes a fixed housing and a rotatable housing, said rotatable housing being rotatingly supported within said fixed housing, said rotatable housing having an exterior annular wall which abuts an interior annular wall of said fixed housing; said means comprises a first opening within the wall structure of said fixed housing and a second opening within the wall structure of said rotatable housing, said first and second openings being alignable to permit access of said tubular structure; a welding electrode mounted within said rotatable housing and being located directly adjacent said tubular structure with such positioned within said welding head apparatus; a chamber located adjacent said electrode to effect supplying of an inert gas to the welding area; and gas passage structure formed in both said interior wall of said fixed housing and said exterior wall of said rotatable housing to facilitate the supplying of inert gas from an external source to said chamber, said gas passage structure including first passageways formed within said fixed housing and second passageways formed within said rotatable housing, a first pair of valves circumferentially spaced apart and connected to said first passageways comprising means for controlling the conducting of gas through said first passageways located within said fixed housing, a second pair of valves circumferentially spaced apart and connected to said second passageways comprising means for controlling the conducting of gas through said second passageways, said first pair of vaLves comprising means closable when directly aligned with said second opening, said second pair of valves comprising means closable when directly aligned with said first opening.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |