US3855445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for interconnecting two plates
Assignee: Goetaverken AB
•
Filing: 1973-11-14
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Granted: 1974-12-17
•
Expires: 1993-11-14
Abstract
Abstract When welding together two plates it is sometimes desirable to cover the seam by a channel member in order to exclude air. The channel member here includes two parallel and spaced apart beams having juxtaposed and overlapping fins of pliable material which close the space between the beams. The head piece of the welding apparatus is movable between the beams, and will during its movements locally open up the fins, which, however, tightly enclose the head piece to prevent the entrance of air.
Inventors
- 👤 N Jungle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:44
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
185 words
In a device for interconnecting two horizontally arranged plates including a carrier straddling the plates, a welding apparatus having a main part and a head piece movable along said carrier, a channel shaped member for covering the welding seam on top of, as well as below the plates and an air extractor connected to the space between the channel shaped members, the improvement that the channel shaped member to be used on top of the plates includes first and second parallel beams located at some distance from each other, as well as a laterally directed fin or pliable material at each beam, said fins overlapping each other to fully cover the distance between the beams and being sufficiently deformable to permit the head piece of the welding apparatus to move longitudinally between the beams, without causing any noticeable entrance of air, the head piece forming part of an electron beam welding apparatus and being carried by the second beam, and first and second sets of pressure fluid operated rams fitted at the carrier for moving each of said beams towards and away from the plates.
Claim 2
Dependent Claim
185 words
In a device for interconnecting two horizontally arranged plates including a carrier straddling the plates, a welding apparatus having a main part and a head piece movable along said carrier, a channel shaped member for covering the welding seam on top of, as well as below the plates and an air extractor connected to the space between the channel shaped members, the improvement that the channel shaped member to be used on top of the plates includes first and second parallel beams located at some distance from each other, as well as a laterally directed fin or pliable material at each beam, said fins overlapping each other to fully cover the distance between the beams and being sufficiently deformable to permit the head piece of the welding apparatus to move longitudinally between the beams, without causing any noticeable entrance of air, the head piece forming part of an electron beam welding apparatus and being carried by the second beam, and first and second sets of pressure fluid operated rams fitted at the carrier for moving each of said beams towards and away from the plates.
Claim 3
Dependent Claim
221 words
In a device for interconnecting two horizontally arranged plates including a carrier straddling the plates, a welding apparatus having a main part and a head piece movable along said carrier, a channel shaped member for covering the welding seam on top of, as well as below the plates and an air extractor connected to the space between the channel shaped members, the improvement that the channel shaped member to be used on top of the plates includes first and second parallel beams located at some distance from each other, as well as a laterally directed fin of pliable material at each beam, said fins overlapping each other to fully cover the distance between the beams and being sufficiently deformable to permit the head Piece of the welding apparatus to move longitudinally between the beams, without causing any noticeable entrance of air and first and second sets of pressure fluid operated rams fitted at the carrier for moving each of said beams towards and away from the plates, the main part of the welding apparatus being located at the carrier, outside the sets of rams and the welding head piece being mounted between the sets of rams at the two beams, movable in step with the main part of the apparatus and connected to the latter by means of a short cable.
Claim 4
Dependent Claim
221 words
In a device for interconnecting two horizontally arranged plates including a carrier straddling the plates, a welding apparatus having a main part and a head piece movable along said carrier, a channel shaped member for covering the welding seam on top of, as well as below the plates and an air extractor connected to the space between the channel shaped members, the improvement that the channel shaped member to be used on top of the plates includes first and second parallel beams located at some distance from each other, as well as a laterally directed fin of pliable material at each beam, said fins overlapping each other to fully cover the distance between the beams and being sufficiently deformable to permit the head Piece of the welding apparatus to move longitudinally between the beams, without causing any noticeable entrance of air and first and second sets of pressure fluid operated rams fitted at the carrier for moving each of said beams towards and away from the plates, the main part of the welding apparatus being located at the carrier, outside the sets of rams and the welding head piece being mounted between the sets of rams at the two beams, movable in step with the main part of the apparatus and connected to the latter by means of a short cable.
Claim 5
Dependent Claim
27 words
A device according to claim 2, in which the welding head piece forms part of an electron beam welding apparatus, and is carried by the second beam.
References Cited (Backward Citations)
US2981824A
Cited
US2950378A
Cited
US3301993A
Cited
US3529122A
Cited
US3626142A
Cited
US3748432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |