US3629548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiarc welding
Assignee: Individual
•
Filing: 1971-01-18
•
Granted: 1971-12-21
•
Expires: 1991-01-18
Abstract
Abstract A plurality of welding arcs can be simultaneously powered by a single power supply employed to supply power to each of these arcs through separate welding circuits corresponding to each of these arcs. Each of the welding circuits involved is constructed so as to include a means for creating a voltage drop such as a resistor, a means for regulating current flow such as a transistor means, an electrode to be used in creating an arc and a voltage comparison means such as an operational amplifier for controlling the operation of the means for regulating current flow. The voltage comparison means means in each of the welding circuits is connected to a reference means for producing a reference voltage so as to operate to control the means for regulating current flow in accordance with the voltage at the reference means and at the means for creating a voltage drop.
Inventors
- 👤 Henry V Rygiol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:06
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006; B23K9/1043; B23K9/1068; B23K9/0008; B23K9/0017
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
386 words
A welding apparatus including a power supply means for supplying power having first and second terminals, ground means connected to said first terminal and circuit means for conveying current to be used in welding from said second terminal to said ground means in order to complete a current path between said terminals in which the improvement comprises: reference means for producing a reference voltage, said circuit means including a plurality of separate welding circuits extending in parallel with one another between said second terminal and said ground means, each of said welding circuits including a means for creating a voltage drop, a means for regulating current flow in the welding circuit in which it is located, an electrode adapted to be used in creating an arc with respect to said ground means and a voltage comparison means for controlling the operation of said means for regulating current flow in the welding circuit within which it is located, the components within said welding circuit being connected to one another in each of said circuits so that the means for creating a voltage drop in each of said circuits is connected to said second terminal, the means for regulating current flow in each of said welding circuits is connected to the means for creating a voltage drop in such circuit on the extremity thereof remote from said second terminal and the electrode in each of said welding circuits is connected to the means for regulating current flow in the circuit in which it is located on an extremity thereof remote from the means for creating a voltage drop in such circuit, the voltage comparison means in each of said welding circuits being connected to said reference means and to the means for regulating current flow in the welding circuit in which it is located and to the connection between the means for creating a voltage drop and the means for regulating current flow in the welding circuit within which it is located, said voltage comparison means being operative to regulate current flow in the welding circuits within which they are located in accordance with the voltages at said reference means and at the connections between said means for creating a voltage drop and the means for regulating current flow in the welding circuits in which they are located.
Claim 2
Dependent Claim
386 words
A welding apparatus including a power supply means for supplying power having first and second terminals, ground means connected to said first terminal and circuit means for conveying current to be used in welding from said second terminal to said ground means in order to complete a current path between said terminals in which the improvement comprises: reference means for producing a reference voltage, said circuit means including a plurality of separate welding circuits extending in parallel with one another between said second terminal and said ground means, each of said welding circuits including a means for creating a voltage drop, a means for regulating current flow in the welding circuit in which it is located, an electrode adapted to be used in creating an arc with respect to said ground means and a voltage comparison means for controlling the operation of said means for regulating current flow in the welding circuit within which it is located, the components within said welding circuit being connected to one another in each of said circuits so that the means for creating a voltage drop in each of said circuits is connected to said second terminal, the means for regulating current flow in each of said welding circuits is connected to the means for creating a voltage drop in such circuit on the extremity thereof remote from said second terminal and the electrode in each of said welding circuits is connected to the means for regulating current flow in the circuit in which it is located on an extremity thereof remote from the means for creating a voltage drop in such circuit, the voltage comparison means in each of said welding circuits being connected to said reference means and to the means for regulating current flow in the welding circuit in which it is located and to the connection between the means for creating a voltage drop and the means for regulating current flow in the welding circuit within which it is located, said voltage comparison means being operative to regulate current flow in the welding circuits within which they are located in accordance with the voltages at said reference means and at the connections between said means for creating a voltage drop and the means for regulating current flow in the welding circuits in which they are located.
Claim 3
Dependent Claim
32 words
A welding apparatus as claimed in claim 1 wherein: said reference means is adjustable so that said reference voltage may be changed so as to vary the current in said welding circuits.
Claim 4
Dependent Claim
27 words
A welding apparatus as claimed in claim 1 wherein: said reference means is a potentiometer, the ends of whicH are connected across said first and second terminals.
Claim 5
Dependent Claim
21 words
A welding apparatus as claimed in claim 1 wherein: each of said means for creating a voltage drop is a resistor.
Claim 6
Dependent Claim
21 words
A welding apparatus as claimed in claim 1 wherein: each of said means for regulating current flow comprises a transistor means.
Claim 7
Dependent Claim
22 words
A welding apparatus as claimed in claim 5 wherein: the transistor means within each of said welding circuits is a single transistor.
Claim 8
Dependent Claim
48 words
A welding apparatus as claimed in claim 5 wherein: the transistor means within each of said welding circuits includes a control transistor connected to the voltage comparison means within such circuit and a plurality of individual transistors connected to said control transistor so as to be operated thereby.
Claim 9
Dependent Claim
20 words
A welding apparatus as claimed in claim 1 in which: each of said voltage comparison means is an operational amplifier.
Claim 10
Dependent Claim
61 words
A welding apparatus as claimed in claim 1 wherein: said reference means is a potentiometer, the ends of which are connected across said first and second terminals, each of said means for creating a voltage drop is a resistor, each of said means for regulating current flow comprises a transistor means, each of said voltage comparison means is an operational amplifier.
Claim 11
Dependent Claim
22 words
A welding apparatus as claimed in claim 9 wherein: the transistor means within each of said welding circuits is a single transistor.
Claim 12
Dependent Claim
48 words
A welding apparatus as claimed in claim 9 wherein: the transistor means within each of said welding circuits includes a control transistor connected to the voltage comparison means within such circuit and a plurality of individual transistors connected to said control transistor so as to be operated thereby.
Claim 13
Dependent Claim
23 words
A welding apparatus as claimed in claim 9 including: diode means for preventing reverse current flow located in each of said welding circuits.
Claim 14
Independent Claim
155 words
A method of simultaneously operating a plurality of separate welding circuits connected in parallel between a first and second terminal of a single power supply comprising: connecting a ground means to the first terminal of the power supply, interconnecting in each of the welding circuits one end of a means for creating a voltage drop to the second terminal of the power source, the other end of said means for creating a voltage drop to one end of a means for regulating current flow, the other end of said means for regulating current flow to an arc welding electrode, simultaneously powering each of said electrodes from the single power supply through each separate welding circuit while controlling the current in each of said welding circuits with the means for regulating current flow by comparing the voltage across said means for creating a voltage drop with a reference voltage used for all of said welding circuits.
Claim 15
Independent Claim
155 words
A method of simultaneously operating a plurality of separate welding circuits connected in parallel between a first and second terminal of a single power supply comprising: connecting a ground means to the first terminal of the power supply, interconnecting in each of the welding circuits one end of a means for creating a voltage drop to the second terminal of the power source, the other end of said means for creating a voltage drop to one end of a means for regulating current flow, the other end of said means for regulating current flow to an arc welding electrode, simultaneously powering each of said electrodes from the single power supply through each separate welding circuit while controlling the current in each of said welding circuits with the means for regulating current flow by comparing the voltage across said means for creating a voltage drop with a reference voltage used for all of said welding circuits.
Claim 16
Dependent Claim
39 words
A method as claimed in claim 13 wherein: the current in each of said welding circuits is controlled by an operational amplifier in each of said welding circuits, all of said operational amplifier being connected to said reference voltage.
References Cited (Backward Citations)
US3536817A
Cited
US3543139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |