Patent US3612818A successfully refreshed from Google Patents.
US3612818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding control arrangement
Assignee: Messer Griesheim GmbH
•
Filing: 1970-06-11
•
Granted: 1971-10-12
•
Expires: 1990-06-11
Abstract
Abstract An apparatus for controlling the application of weld metal in electric calarc welding includes a mechanical scanning device upstream from the welding torch. The scanning device penetrates into the welding groove and measures at least one physical dimension thereof which is converted into signals for controlling the welding material feed.
Inventors
- 👤 Richard Bechtle
- 👤 Erich Bragard
- 👤 Gunther Hannappel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:43
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/127; B23K9/1272; B23K9/1278; B23K9/1274
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
An apparatus for controlling the application of weld metal in electric calarc welding with a consumable electrode welding torch, characterized in that a mechanical scanning device is arranged upstream from the consumable electrode welding torch, means for feeding the welding material to said torch, said scanning device penetrating into the welding groove to measure a physical dimension therein, and a converting device being attached to said scanning device to convert the measured values into signals for controlling the feed of the welding material.
Claim 2
Independent Claim
83 words
An apparatus for controlling the application of weld metal in electric calarc welding with a consumable electrode welding torch, characterized in that a mechanical scanning device is arranged upstream from the consumable electrode welding torch, means for feeding the welding material to said torch, said scanning device penetrating into the welding groove to measure a physical dimension therein, and a converting device being attached to said scanning device to convert the measured values into signals for controlling the feed of the welding material.
Claim 3
Dependent Claim
34 words
A device according to claim 1, characterized in that the mechanical scanning device includes a pivoted lever, one end of said lever having a scanning sensor and the other end having a controlling sensor.
Claim 4
Dependent Claim
20 words
A device according to claim 2, characterized in that the converting device includes an adjustable resistance having a nonlinear character.
Claim 5
Dependent Claim
16 words
A device according to claim 3, characterized in that rolls are provided as the scanning sensors.
Claim 6
Dependent Claim
18 words
A device according to claim 2, characterized in that a capacitive tracer is provided as said scanning sensor.
Claim 7
Dependent Claim
18 words
A device according to claim 2, characterized in that an inductive tracer is provided as said scanning sensor.
Claim 8
Dependent Claim
61 words
A device according to claim 1, characterized in that the scanning device has two roLls which always run along opposite edges of the welding groove and the distance between them varies according to the change in the weld seam cross section with this change in distance giving a measured value for the signal of a change in the weld metal feed.
Claim 9
Dependent Claim
69 words
A device according to claim 2, characterized in that said scanning sensor has two rolls running always along the opposite edges of the welding groove, each of said rolls being mounted on a shaft, and both shafts being pivoted on a common point of rotation whereby a change in the angle of the shaft gives a measured value for the signal of the change in the weld metal feed.
Claim 10
Dependent Claim
36 words
A device according to claim 1, characterized in that a measuring device is attached to the welding torch for measuring the weld reinforcement and for converting the measured values into signals for correcting the welding parameters.
Claim 11
Dependent Claim
64 words
In a method of controlling the application of weld metal in electric calarc welding, the improvement comprising positioning a mechanical scanning device upstream from the welding torch, penetrating the scanning device into the welding groove to measure a physical dimension therein, converting the measured values from the scanning device into signals, and utilizing the signals to control the welding material feed into the torch.
Claim 12
Dependent Claim
64 words
In a method of controlling the application of weld metal in electric calarc welding, the improvement comprising positioning a mechanical scanning device upstream from the welding torch, penetrating the scanning device into the welding groove to measure a physical dimension therein, converting the measured values from the scanning device into signals, and utilizing the signals to control the welding material feed into the torch.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |