US3870849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-arc pipe welding
Assignee: Individual
•
Filing: 1973-08-21
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Granted: 1975-03-11
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Expires: 1993-08-21
Abstract
Abstract Pipe, tubing and the like can be satisfactorily welded without the use of tack welds, restraining clamps or the like so as to be in a desired alignment through the use of an apparatus having a plurality of separate electrodes mounted equidistant from one another around a ring-like area or path where a weld is to be created. Such electrodes are preferably mounted upon a holding means which in turn is rotatably mounted on a mounting member. Rotating means are provided for rotating the holding means around the path or area where a weld is to be created as separate welding currents are supplied to the electrodes through appropriate supply means.
Inventors
- 👤 Henry V Rygiol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:17
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/04; B23K37/053; B23K37/0533; B23K9/00; B23K9/02; B23K9/028; B23K9/0282
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
386 words
An apparatus for welding along a continuous ring-like line which comprises: a mounting means for supporting parts of said apparatus adapted to be located relative to parts to be welded, said mounting means including a support, a non-conductive housing mounted on said support, said housing having an internal cavity located therein, an opening extending therethrough and a notch extending into said cavity from the extErior thereof of said opening, said notch and said opening being of such dimension that parts to be welded are capable of being inserted into said opening through said notch, a holding means comprising an electrode assembly rotatably mounted within said housing, said assembly having a centrally located opening therein in alignment with said opening in said housing and a notch leading from its exterior to said opening, said notch and said opening being capable of fitting around parts to be welded located so as to extend into said opening, a plurality of electrodes mounted on said holding means so as to be capable of being rotated by the rotation of said holding means, said electrodes being insulated from one another, being spaced equally from one another around the axis of rotation of said holder and being located at equal distances from said axis, and being in the same plane transverse to the axis of said opening in said holding means, means for rotating said holding means relative to said mounting member, and slip ring means for supplying separate welding currents to each of said electrodes as said holding means and said electrodes are rotated, retainer means for securing parts to be welded within said housing rotatably mounted on said housing so as to be capable of being moved to secure such parts relative to said housing so that such parts are positioned within said openings, said slip ring means for supplying separate welding currents includes electrically conductive plates mounted within said housing, said electrode assembly includes electrode holders in engagement with said plates and rotatably mounted on said plates so that current can pass through said plates to said electrode holders and said electrodes, terminal plates for use in grounding said parts to be welded within said apparatus attached to said housing so as to extend therefrom in engagement with such parts held in said housing and extending into said openings.
Claim 2
Independent Claim
386 words
An apparatus for welding along a continuous ring-like line which comprises: a mounting means for supporting parts of said apparatus adapted to be located relative to parts to be welded, said mounting means including a support, a non-conductive housing mounted on said support, said housing having an internal cavity located therein, an opening extending therethrough and a notch extending into said cavity from the extErior thereof of said opening, said notch and said opening being of such dimension that parts to be welded are capable of being inserted into said opening through said notch, a holding means comprising an electrode assembly rotatably mounted within said housing, said assembly having a centrally located opening therein in alignment with said opening in said housing and a notch leading from its exterior to said opening, said notch and said opening being capable of fitting around parts to be welded located so as to extend into said opening, a plurality of electrodes mounted on said holding means so as to be capable of being rotated by the rotation of said holding means, said electrodes being insulated from one another, being spaced equally from one another around the axis of rotation of said holder and being located at equal distances from said axis, and being in the same plane transverse to the axis of said opening in said holding means, means for rotating said holding means relative to said mounting member, and slip ring means for supplying separate welding currents to each of said electrodes as said holding means and said electrodes are rotated, retainer means for securing parts to be welded within said housing rotatably mounted on said housing so as to be capable of being moved to secure such parts relative to said housing so that such parts are positioned within said openings, said slip ring means for supplying separate welding currents includes electrically conductive plates mounted within said housing, said electrode assembly includes electrode holders in engagement with said plates and rotatably mounted on said plates so that current can pass through said plates to said electrode holders and said electrodes, terminal plates for use in grounding said parts to be welded within said apparatus attached to said housing so as to extend therefrom in engagement with such parts held in said housing and extending into said openings.
Claim 3
Independent Claim
386 words
An apparatus for welding along a continuous ring-like line which comprises: a mounting means for supporting parts of said apparatus adapted to be located relative to parts to be welded, said mounting means including a support, a non-conductive housing mounted on said support, said housing having an internal cavity located therein, an opening extending therethrough and a notch extending into said cavity from the extErior thereof of said opening, said notch and said opening being of such dimension that parts to be welded are capable of being inserted into said opening through said notch, a holding means comprising an electrode assembly rotatably mounted within said housing, said assembly having a centrally located opening therein in alignment with said opening in said housing and a notch leading from its exterior to said opening, said notch and said opening being capable of fitting around parts to be welded located so as to extend into said opening, a plurality of electrodes mounted on said holding means so as to be capable of being rotated by the rotation of said holding means, said electrodes being insulated from one another, being spaced equally from one another around the axis of rotation of said holder and being located at equal distances from said axis, and being in the same plane transverse to the axis of said opening in said holding means, means for rotating said holding means relative to said mounting member, and slip ring means for supplying separate welding currents to each of said electrodes as said holding means and said electrodes are rotated, retainer means for securing parts to be welded within said housing rotatably mounted on said housing so as to be capable of being moved to secure such parts relative to said housing so that such parts are positioned within said openings, said slip ring means for supplying separate welding currents includes electrically conductive plates mounted within said housing, said electrode assembly includes electrode holders in engagement with said plates and rotatably mounted on said plates so that current can pass through said plates to said electrode holders and said electrodes, terminal plates for use in grounding said parts to be welded within said apparatus attached to said housing so as to extend therefrom in engagement with such parts held in said housing and extending into said openings.
Claim 4
Independent Claim
386 words
An apparatus for welding along a continuous ring-like line which comprises: a mounting means for supporting parts of said apparatus adapted to be located relative to parts to be welded, said mounting means including a support, a non-conductive housing mounted on said support, said housing having an internal cavity located therein, an opening extending therethrough and a notch extending into said cavity from the extErior thereof of said opening, said notch and said opening being of such dimension that parts to be welded are capable of being inserted into said opening through said notch, a holding means comprising an electrode assembly rotatably mounted within said housing, said assembly having a centrally located opening therein in alignment with said opening in said housing and a notch leading from its exterior to said opening, said notch and said opening being capable of fitting around parts to be welded located so as to extend into said opening, a plurality of electrodes mounted on said holding means so as to be capable of being rotated by the rotation of said holding means, said electrodes being insulated from one another, being spaced equally from one another around the axis of rotation of said holder and being located at equal distances from said axis, and being in the same plane transverse to the axis of said opening in said holding means, means for rotating said holding means relative to said mounting member, and slip ring means for supplying separate welding currents to each of said electrodes as said holding means and said electrodes are rotated, retainer means for securing parts to be welded within said housing rotatably mounted on said housing so as to be capable of being moved to secure such parts relative to said housing so that such parts are positioned within said openings, said slip ring means for supplying separate welding currents includes electrically conductive plates mounted within said housing, said electrode assembly includes electrode holders in engagement with said plates and rotatably mounted on said plates so that current can pass through said plates to said electrode holders and said electrodes, terminal plates for use in grounding said parts to be welded within said apparatus attached to said housing so as to extend therefrom in engagement with such parts held in said housing and extending into said openings.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |