Patent US3704822A successfully refreshed from Google Patents.
US3704822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming t-welds between mutually perpendicular plates
Assignee: JFE Engineering Corp
•
Filing: 1970-03-20
•
Granted: 1972-12-05
•
Expires: 1990-03-20
Abstract
Abstract A welding apparatus for forming T-welds between a base plate and a plurality of reinforcing plates perpendicular thereto. Each of the latter reinforcing plates has an edge engaging a surface of the base plate to form a pair of corners therewith extending longitudinally of this edge, and a pair of fillet welds are simultaneously deposited in the pair of corners of each reinforcing plate so that in a single pass each reinforcing plate is T-welded to the base plate. For this purpose a pair of welding means are provided at each of the corners and a carriage means carries a pair of welding means for simultaneously transporting them longitudinally along the pair of corners to simultaneously deposit fillet welds in the latter, respectively.
Inventors
- 👤 Hirokazu Nomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:54
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0256; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49622
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
210 words
In a welding apparatus for forming a T-weld between a pair of mutually perpendicular plates with fillet welds situated in the corners formed by the engagement of an edge of one plate with a surface of the other plate, a pair of welding means respectively situated at the latter corners for welding the plates to each other with fillet welds respectively situated in said corners, carriage means carrying said pair of welding means for moving the latter simultaneously along the edge of the plate whose edge engages the surface of the other plate for progressively introducing the fillet weld into the corners simultaneously during simultaneous operation of the pair of welding means as they are moved by said carriage means, and support means carried by said carriage means and supporting said pair of welding means thereon, said pair of welding means respectively having lower ends situated at said corners, and said support means supporting said pair of welding means for free swinging movement inwardly toward and outwardly away from each other at said lower ends thereof, said pair of welding means respectively having centers of gravity which urge them to swing inwardly toward each other at their lower ends for locating the pair of welding means respectively at Said corners.
Claim 2
Dependent Claim
210 words
In a welding apparatus for forming a T-weld between a pair of mutually perpendicular plates with fillet welds situated in the corners formed by the engagement of an edge of one plate with a surface of the other plate, a pair of welding means respectively situated at the latter corners for welding the plates to each other with fillet welds respectively situated in said corners, carriage means carrying said pair of welding means for moving the latter simultaneously along the edge of the plate whose edge engages the surface of the other plate for progressively introducing the fillet weld into the corners simultaneously during simultaneous operation of the pair of welding means as they are moved by said carriage means, and support means carried by said carriage means and supporting said pair of welding means thereon, said pair of welding means respectively having lower ends situated at said corners, and said support means supporting said pair of welding means for free swinging movement inwardly toward and outwardly away from each other at said lower ends thereof, said pair of welding means respectively having centers of gravity which urge them to swing inwardly toward each other at their lower ends for locating the pair of welding means respectively at Said corners.
Claim 3
Dependent Claim
33 words
The combination of claim 1 and wherein a bridge crane means carries said carriage means and has a transverse beam extending in the welding direction and supporting the carriage means for movement therealong.
Claim 4
Dependent Claim
107 words
The combination of claim 2 and including guide means for a series of plates respectively having edges situated at the surface of a base plate to form a series of T-welds therewith, said guide means coacting with said crane means for guiding the latter for movement transversely of the welded edges along the base plate for selectively situating the pair of welding means at opposite sides of a given plate whose edge engages the base plate to shift the apparatus from one pair of corners to another pair of corners to carry out the welding operations sequentially at the several plates whose edges engage the base plate.
Claim 5
Dependent Claim
79 words
The combination of claim 2, said support means including a supporting pin extending parallel to the corners which receive the fillet welds, said pair of welding means both being swingable on said supporting pin and extending downwardly therefrom to swing at their lower ends toward and away from each other into and away from the corners which are to receive the fillet welds, and a connecting frame carrying said supporting pin and connecting the latter with said carriage means.
Claim 6
Dependent Claim
28 words
The combination of claim 4 and wherein a means is operatively connected with said connecting frame for raising and lowering the latter with respect to said carriage means.
Claim 7
Dependent Claim
30 words
The combination of claim 5 and wherein a drive means is operatively connected with said carriage means for driving the latter along the transverse beam of said bridge crane 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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |