Patent US3679865A successfully refreshed from Google Patents.
US3679865A
Expired / Lapsed
US
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Apparatus for controlling electric welding processes
Assignee: REDEMAT
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Filing: 1971-06-18
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Granted: 1972-07-25
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Expires: 1991-06-18
Abstract
Abstract An apparatus for controlling electric welding processes with consumable electrodes by generating electric pulses of the variation in the welding parameters, the voltage, current or mechanical vibration, in the workpiece. These variations which are characteristic for the melting during welding are picked up, transformed and supplied to a signaling device to furnish a statement on the transfer of the material which the welder uses to correctly guide the electrode.
Inventors
- 👤 Friedrich Erdmann Jesnitzer
- 👤 Dietrich Rehfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:33
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/095
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
Apparatus for cOntinuously monitoring electric welding processes with consumable electrodes of electrode material, comprising a transducer means responding to variations of a welding characteristic produced by the discontinuous transfer of electrode material and generating at an output electric signals commensurate therewith, an electronic pulse shaping means having an input connected to the output of the transducer transforming the signals into a form suitable for application to a signalling device, and a signalling device connected to the output of the pulse shaping means which continuously produces an intelligible indication of signals at the output of the transducer.
Claim 2
Dependent Claim
96 words
Apparatus for cOntinuously monitoring electric welding processes with consumable electrodes of electrode material, comprising a transducer means responding to variations of a welding characteristic produced by the discontinuous transfer of electrode material and generating at an output electric signals commensurate therewith, an electronic pulse shaping means having an input connected to the output of the transducer transforming the signals into a form suitable for application to a signalling device, and a signalling device connected to the output of the pulse shaping means which continuously produces an intelligible indication of signals at the output of the transducer.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1, wherein said welding characteristic is the welding voltage.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1, wherein said welding characteristic is the welding current.
Claim 5
Dependent Claim
14 words
The apparatus of claim 1, wherein said welding characteristic is the audible sound pressure.
Claim 6
Dependent Claim
35 words
The apparatus of claim 1, wherein said pulse shaping means transforms and amplifies the variations of the welding characteristic to generate pulses lying within the range of audibility, and said signalling device is a loudspeaker.
Claim 7
Dependent Claim
35 words
The apparatus of claim 1, wherein said pulse shaping means transforms and amplifies the variations of the welding characteristic to generate pulses lying within the range of audibility, and said signalling device is a headset.
Claim 8
Dependent Claim
21 words
The apparatus of claim 1, wherein said pulse shaping means is an integrator, and said signalling device is a pointer instrument.
Claim 9
Dependent Claim
22 words
The apparatus of claim 1, wherein said pulse shaping means is an integrator, and said signalling device is an optical signalling means.
Claim 10
Dependent Claim
22 words
The apparatus of claim 1, wherein said pulse shaping means is an integrator, and said signalling device is a mechanical signalling means.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |