Patent US3897593A successfully refreshed from Google Patents.
US3897593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance welding of sheet metal coated with layers
Assignee: Individual
•
Filing: 1970-12-30
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Granted: 1975-07-29
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Expires: 1990-12-30
Abstract
Abstract The invention relates to apparatus for the resistance welding of sheet metal panels coated with layers. In all of the disclosed forms of the invention electrical contact is established between the sheets and between the welding electrodes and the sheets, and welding is thereafter effected across the coating layers. Electrical contact is established in several ways, for example, by shunts connecting the electrodes to the coated panels; by auxiliary contacts in the form of pins electrically connecting the superposed panels; by filler welding pieces; by electrodes provided or associated with cutting means for penetrating the coating layer; by the use of press-in bodies which penetrate the coating layers, and by the use of heating means to melt or fuse the coating layer.
Inventors
- 👤 Otto Alfred Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:26
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/163; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
196 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising a first main electrode and, in juxtaposition thereto, a second main electrode, at least one first auxiliary electrode being arranged side-by-side of said first main electrode and being electrically insulated therefrom, at least one second auxiliary electrode being arranged side-by-side of said second main electrode and being electrically insulated therefrom, said first and second auxiliary electrodes being also in juxtaposition to each other, means for moving at least one of said main electrodes and its adjacent auxiliary elEctrode toward and away from the other main and auxiliary electrodes so as to provide a space for placing superposed insulation-coated sheet metal panels between said first and second main and auxiliary electrodes, and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, a shunt connecting the first main electrode with the second auxiliary electrode and a shunt connecting the first auxiliary electrode with the second main electrode, regulating resistor means provided in said shunts, a welding current source, and connections from said welding current source to said main electrodes.
Claim 2
Independent Claim
196 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising a first main electrode and, in juxtaposition thereto, a second main electrode, at least one first auxiliary electrode being arranged side-by-side of said first main electrode and being electrically insulated therefrom, at least one second auxiliary electrode being arranged side-by-side of said second main electrode and being electrically insulated therefrom, said first and second auxiliary electrodes being also in juxtaposition to each other, means for moving at least one of said main electrodes and its adjacent auxiliary elEctrode toward and away from the other main and auxiliary electrodes so as to provide a space for placing superposed insulation-coated sheet metal panels between said first and second main and auxiliary electrodes, and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, a shunt connecting the first main electrode with the second auxiliary electrode and a shunt connecting the first auxiliary electrode with the second main electrode, regulating resistor means provided in said shunts, a welding current source, and connections from said welding current source to said main electrodes.
Claim 3
Dependent Claim
24 words
The device of claim 1, in which a pair of juxtapositioned auxiliary electrodes is arranged on each side of said pair of main electrodes.
Claim 4
Dependent Claim
80 words
The device of claim 1, in which the auxiliary electrodes are constructed as welding tongs, the arms of said tongs positioned at the side of the first main electrode and forming the first auxiliary electrode being isolated from the arms of said tongs positioned at the side of the second main electrode and forming the second auxiliary electrode, said arms being electrically insulated from each other by insulating discs provided between said arms and an insulating axle of the tongs.
Claim 5
Independent Claim
180 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising a first main electrode and, in juxtaposition thereto, a second main electrode a first auxiliary electrode being arranged side-by-side of said first main electrode and being electrically insulated therefrom, a second auxiliary electrode being arranged side-by-side of said second main electrode and being electrically insulated therefrom, said first and second auxiliary electrodes being also in juxtaposition to each other, means for moving at least one of said main electrodes and its adjacent auxiliary electrode toward and away from the other main and auxiliary electrodes so as to provide a space for placing superposed insulation-coated sheet metal panels between said first and second main and auxiliary electrodes, and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, a shunt connecting the first auxiliary electrode with the juxtapositioned second auxiliary electrode, regulating resistor means provided in said shunt, a welding current source, and connection from said welding current source to said main electrodes.
Claim 6
Independent Claim
180 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising a first main electrode and, in juxtaposition thereto, a second main electrode a first auxiliary electrode being arranged side-by-side of said first main electrode and being electrically insulated therefrom, a second auxiliary electrode being arranged side-by-side of said second main electrode and being electrically insulated therefrom, said first and second auxiliary electrodes being also in juxtaposition to each other, means for moving at least one of said main electrodes and its adjacent auxiliary electrode toward and away from the other main and auxiliary electrodes so as to provide a space for placing superposed insulation-coated sheet metal panels between said first and second main and auxiliary electrodes, and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, a shunt connecting the first auxiliary electrode with the juxtapositioned second auxiliary electrode, regulating resistor means provided in said shunt, a welding current source, and connection from said welding current source to said main electrodes.
Claim 7
Independent Claim
171 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising a first double-point electrode and, in juxtaposition thereto, a second double-point electrode, said double-point electrodes comprising an electrode and a counter-electrode of opposite polarity arranged in parallel side-by-side position to each other, the electrodes and counter-electrodes of said juxtapositioned first and second double-point electrodes being positioned so that each electrode and counter-electrode on one side of the sheet metal panel is of opposite polarity to each electrode and counter-electrode on the other side of the sheet metal panel, means for moving at least one of said double-point electrodes towards and away from the other double-point electrode, so as to provide a space for placing superposed insulation-coated sheet metal panels between said first and second double-point electrodes and to establish contact between said sheet metal panels and said double-point electrodes on moving the electrodes toward each other, a welding current source, and connections from said welding current source to said double-point electrodes.
Claim 8
Independent Claim
171 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising a first double-point electrode and, in juxtaposition thereto, a second double-point electrode, said double-point electrodes comprising an electrode and a counter-electrode of opposite polarity arranged in parallel side-by-side position to each other, the electrodes and counter-electrodes of said juxtapositioned first and second double-point electrodes being positioned so that each electrode and counter-electrode on one side of the sheet metal panel is of opposite polarity to each electrode and counter-electrode on the other side of the sheet metal panel, means for moving at least one of said double-point electrodes towards and away from the other double-point electrode, so as to provide a space for placing superposed insulation-coated sheet metal panels between said first and second double-point electrodes and to establish contact between said sheet metal panels and said double-point electrodes on moving the electrodes toward each other, a welding current source, and connections from said welding current source to said double-point electrodes.
Claim 9
Independent Claim
110 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding electrodes, means for moving at least one oF said juxtapositioned electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, press-in wires placed between each electrode and the contacting sheet metal, shunts connecting each press-in wire to the opposite electrode, a welding current source, and connections from said welding current source to said electrodes.
Claim 10
Independent Claim
110 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding electrodes, means for moving at least one oF said juxtapositioned electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, press-in wires placed between each electrode and the contacting sheet metal, shunts connecting each press-in wire to the opposite electrode, a welding current source, and connections from said welding current source to said electrodes.
Claim 11
Dependent Claim
33 words
The device of claim 6, in which the pressin wires are supported by a step-by-step movable holder belt and in which the connections of the shunts with the pressin wires are sliding contacts.
Claim 12
Independent Claim
146 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding electrodes, the one first electrode having an annular cutting edge on its tip, said annular cutting edge cutting through the coating layer and establishing contact with the blank metal of the sheet metal, the other opposite second electrode being a swivel electrode, means for moving at least one of said juxtapositioned electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, a shunt connecting said second electrode with the sheet metal contacted by the first electrode, a welding current source, and connections from said welding current source to said electrodes.
Claim 13
Independent Claim
146 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding electrodes, the one first electrode having an annular cutting edge on its tip, said annular cutting edge cutting through the coating layer and establishing contact with the blank metal of the sheet metal, the other opposite second electrode being a swivel electrode, means for moving at least one of said juxtapositioned electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, a shunt connecting said second electrode with the sheet metal contacted by the first electrode, a welding current source, and connections from said welding current source to said electrodes.
Claim 14
Dependent Claim
49 words
The device of claim 8 in which a protective hood is arranged around said first electrode, said hood being adapted to rest on said sheet metal panel, said hood being connected with a means for supplying a protective gas and with an exhaust means for removing the protective gas.
Claim 15
Independent Claim
149 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned electrodes, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, a clamping tong establishing a shunt from one surface of the sheet metal panel to the other surface of said panel, said clamping tong having contact cutter blades pivotally mounted on the jaws of said clamping tong, said contact cutter blades pentrating the coating layers to establish contact with the blank metal of the sheet metal panels, a welding current source, and connections from said welding current source to said electrodes and said clamping tong.
Claim 16
Independent Claim
149 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned electrodes, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, a clamping tong establishing a shunt from one surface of the sheet metal panel to the other surface of said panel, said clamping tong having contact cutter blades pivotally mounted on the jaws of said clamping tong, said contact cutter blades pentrating the coating layers to establish contact with the blank metal of the sheet metal panels, a welding current source, and connections from said welding current source to said electrodes and said clamping tong.
Claim 17
Independent Claim
176 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned first and second electrodes, the first of said electrodes being provided with a central bore and having mounted in said bore a spring-biased thrust pin adapted to penetrate the coating layer of the adjacent sheet metal and to establish contact of the first electrode with the blank metal of said sheet metal, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, an auxiliary contact means spaced from said electrodes and passing through the sheet metal panels so as to electrically connect the metal sheets with each other, a shunt connecting said auxiliary contAct means with the second electrode, a welding current source, and connections from said welding current source to said electrodes.
Claim 18
Independent Claim
176 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned first and second electrodes, the first of said electrodes being provided with a central bore and having mounted in said bore a spring-biased thrust pin adapted to penetrate the coating layer of the adjacent sheet metal and to establish contact of the first electrode with the blank metal of said sheet metal, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, an auxiliary contact means spaced from said electrodes and passing through the sheet metal panels so as to electrically connect the metal sheets with each other, a shunt connecting said auxiliary contAct means with the second electrode, a welding current source, and connections from said welding current source to said electrodes.
Claim 19
Independent Claim
167 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding roller electrodes for roller seam welding, said welding roller electrodes comprising two roller discs and interposed between them a cutter roller disc adapted to penetrate the coating layers of the metal sheets adjacent the roller electrodes and thus to establish contact of the roller electrodes with the blank metal of said sheet metals, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, an auxiliary contact means spaced from said electrodes and passing through the sheet metal panels so as to electrically connect the metal sheets with each other, a welding current source, and connections from said welding current source to said electrodes.
Claim 20
Independent Claim
167 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding roller electrodes for roller seam welding, said welding roller electrodes comprising two roller discs and interposed between them a cutter roller disc adapted to penetrate the coating layers of the metal sheets adjacent the roller electrodes and thus to establish contact of the roller electrodes with the blank metal of said sheet metals, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, an auxiliary contact means spaced from said electrodes and passing through the sheet metal panels so as to electrically connect the metal sheets with each other, a welding current source, and connections from said welding current source to said electrodes.
Claim 21
Dependent Claim
44 words
The device of claim 12, in which the cutter roller disc is mounted on resilient flanged sleeves giving way into inner recesses of the welding rollers and a groove is provided on the common shaft of the welding rollers and the cutter roller disc.
Claim 22
Independent Claim
175 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding electrodes, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, contact press-in means interposed between each electrode and the adjacent metal sheet of the sheet metal panel, said contact press-in means being pressed into and through the coating layers onto the blank metal of said metal sheets on movement of the electrodes toward each other and thus establishing contact between the electrodes and the blank metal of the metal sheets, an auxiliary contact means spaced from said electrodes and passing through the sheet metal panel so as to electrically connect the metal sheets with each other, a welding current source, and connections from said welding current source to said electrodes.
Claim 23
Independent Claim
175 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding electrodes, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, contact press-in means interposed between each electrode and the adjacent metal sheet of the sheet metal panel, said contact press-in means being pressed into and through the coating layers onto the blank metal of said metal sheets on movement of the electrodes toward each other and thus establishing contact between the electrodes and the blank metal of the metal sheets, an auxiliary contact means spaced from said electrodes and passing through the sheet metal panel so as to electrically connect the metal sheets with each other, a welding current source, and connections from said welding current source to said electrodes.
Claim 24
Dependent Claim
43 words
The device of claim 14, in which the contact press-in means are supported by a step-by-step movable holder belt, said belt moving between the electrodes and the adjacent metal sheet and automatically supplying said contact press-in means to the spots to be welded.
Claim 25
Independent Claim
141 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding electrodes, heating means provided at at least one of said electrodes, said heating means being adapted to at least soften the coating layer of the coated metal sheets adjacent to the electrode, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, said means causing displacement of the at least softened coating layer by the pressure of the electrodes moving towards each other, a welding current source, and connections from said welding current source to said electrodes.
Claim 26
Independent Claim
141 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding electrodes, heating means provided at at least one of said electrodes, said heating means being adapted to at least soften the coating layer of the coated metal sheets adjacent to the electrode, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, said means causing displacement of the at least softened coating layer by the pressure of the electrodes moving towards each other, a welding current source, and connections from said welding current source to said electrodes.
Claim 27
Dependent Claim
35 words
The device of claim 16, in which the heating means is a tubular heating stamp guided on the electrode, said heating stamp being heatable by heating coils and being spring-biased towards the sheet metal panel.
Claim 28
Dependent Claim
35 words
The device of claim 16, in which the heating means is a bolt-shaped heating stamp guided in the electrode, said heating stamp being heatable by heating coils and being spring-biased towards the sheet metal panel.
Claim 29
Dependent Claim
35 words
The device of claim 16, in which the heating means is an internal hot air device comprising a hot air supply pipe and a vent pipe being arranged in a central bore of the electrode.
Claim 30
Dependent Claim
50 words
The device of claim 16, in which the heating means is an outer heating means arranged around the electrode, said heating means comprising a hot air heating tube guided slidably on the electrode, a biasing spring, and hot air supply and venting tubes connected with said hot air heating tube.
Claim 31
Dependent Claim
34 words
The device of claim 19, in which cooling plates are provided for protecting the coating layer, said cooling plates having holes and being placed on said coating layer around the spots to be welded.
Claim 32
Dependent Claim
34 words
The device of claim 20, in which cooling plates are provided for protecting the coating layer, said cooling plates having holes and being placed on said coating layer around the spots to be welded.
Claim 33
Independent Claim
177 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding roller electrodes for roller seam welding, said welding roller electrodes comprising two roller discs and interposed between them a cutter roller disc adapted to penetrate the coating layers of the metal sheets adjacent the roller electrodes and thus to establish contact of the roller electrodes with the blank metal of said sheet metals, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, heating means being provided ahead of the roller electrodes so as to heat and soften the coating layer, cooling means being provided laterally of said roller electrodes to cool the coating layer around the welding seam, a welding current source, and connections from said welding current source to said electrodes.
Claim 34
Independent Claim
177 words
A device for resistance welding of insulation-coated sheet metal to at least one other coated sheet metal, said device comprising two juxtapositioned welding roller electrodes for roller seam welding, said welding roller electrodes comprising two roller discs and interposed between them a cutter roller disc adapted to penetrate the coating layers of the metal sheets adjacent the roller electrodes and thus to establish contact of the roller electrodes with the blank metal of said sheet metals, means for moving at least one of said electrodes toward and away from the other electrode so as to provide a space for placing superposed insulation-coated sheet metal panels between said electrodes and to establish contact between said sheet metal panels and said electrodes on moving the electrodes toward each other, heating means being provided ahead of the roller electrodes so as to heat and soften the coating layer, cooling means being provided laterally of said roller electrodes to cool the coating layer around the welding seam, a welding current source, and connections from said welding current source to said electrodes.
Claim 35
Dependent Claim
27 words
The device of claim 23, in which the heating means are orifices blowing hot air upon and thus softening the coating layer ahead of the roller electrodes.
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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |