US3736403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handheld automatic wire electrode transport unit supplied with power from a single rectifier unit
Assignee: Cubic Corp
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Filing: 1971-01-04
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Granted: 1973-05-29
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Expires: 1991-01-04
Abstract
Abstract A welding gun and control assembly is adapted to connect alternatively to constant potential or constant current power supplies for an arc welding operation. The gun assembly includes an internal drive motor which automatically advances the electrode wire. The control assembly, which requires only a single cable from the main power supply, provides power to the drive motor and for welding, irrespective of the power supply. In alternative embodiments, the gun and control assemblies can be adapted to operate with a shielding gas, in which case the cable connecting the gun assembly to the control assembly includes a gas hose. The gun assembly is then provided with a shielding gas cowl to enclose the bell portion of the gun.
Inventors
- 👤 L Rogers
- 👤 M Neumann
- 👤 D Dolan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:59
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/124; B23K9/125; B23K9/24; B23K9/28; B23K9/29; B23K9/291; B23K9/295
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
151 words
A welding system comprising: a. a welding gun for holding an electrode adapted to be hand held and having a trigger switch and an integral electrode feed motor; b. a single rectifier coupled to a single source of welding power for providing all electrical operating power; c. electronic power means coupled to said rectifier and responsive to said trigger switch for controlling the provisions of electrical voltage and current from said rectifier; d. feed motor control means coupled to said electronic power means and said feed motor for selectively and incrementally applying energizing electrical power to energize said feed motor; e. welding current sensing switch means responsive to the flow of welding power current for independently energizing said feed motor control means; and f. inching circuit means for incrementally energizing said control means from said electronic power means for applying electrical power at a greatly reduced level to said feed motor.
Claim 2
Dependent Claim
151 words
A welding system comprising: a. a welding gun for holding an electrode adapted to be hand held and having a trigger switch and an integral electrode feed motor; b. a single rectifier coupled to a single source of welding power for providing all electrical operating power; c. electronic power means coupled to said rectifier and responsive to said trigger switch for controlling the provisions of electrical voltage and current from said rectifier; d. feed motor control means coupled to said electronic power means and said feed motor for selectively and incrementally applying energizing electrical power to energize said feed motor; e. welding current sensing switch means responsive to the flow of welding power current for independently energizing said feed motor control means; and f. inching circuit means for incrementally energizing said control means from said electronic power means for applying electrical power at a greatly reduced level to said feed motor.
Claim 3
Dependent Claim
32 words
The system of claim 1 further including voltage regulating means connected to said electronic powering means for controlling the selected magnitude of the voltage being applied to said feed motor control means.
Claim 4
Dependent Claim
62 words
The system of claim 2, in which said voltage regulating means include a first voltage regulating circuit for providing a voltage approximating the drive motor maximum drive voltage, a second voltage regulating circuit for providing a voltage substantially less than the drive motor maximum voltage and a switch coupled to one of said voltage regulating circuits for selectively including said one circuit.
Claim 5
Dependent Claim
58 words
The system of claim 1 including constant current and constant voltage regulating means alternatively selectable for limiting the magnitude of the voltage being applied to said feed motor control means, and switch means for selecting one of said first and second voltage regulating means whereby a selection of either a constant current or constant potential source is obtained.
Claim 6
Dependent Claim
75 words
The system of claim 1 wherein said feed motor control means include: a. potentiometer means having a resistive element and first and second ends connected to be powered by said electronic powering means and a wiper contact adapted to contact said resistive element intermediate said first and second ends; b. means coupling said wiper contact to said current sensing switch means; and c. wherein said inching circuit means serially include said potentiometer means resistive element.
Claim 7
Dependent Claim
31 words
The system of claim 1, wherein said feed motor control means include amplifier means having an input coupled through said current sensing switch means and an outpUt coupled to feed motor.
Claim 8
Dependent Claim
56 words
The system of claim 1, including a shielding gas control means comprising a gas valve driver circuit electrically coupled to said electronic powering means; a gas valve adapted to be operated by said gas valve driver circuit; and signalling means coupled to said gas valve driver circuit for providing a visual indication of gas valve energization.
Claim 9
Dependent Claim
62 words
The system of claim 1 in which a control circuit is connected to said source of welding power and is operable in response to the provision of electrical power from said electronic power means, and an electrode is connected to the output of said control circuit, whereby welding power is applied to said electrode only after said trigger switch has been actuated.
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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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |