Patent US3609277A successfully refreshed from Google Patents.
US3609277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing press particularly for brazing extended surfaces having relieved corners to a matching plate
Assignee: SOC DE TRAITEMENTS ELECTROLYTIQUES ET ELECTROTHERMIQUES
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Filing: 1970-07-13
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Granted: 1971-09-28
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Expires: 1990-07-13
Abstract
Abstract To unite surfaces with relieved corners, such as the bottoms of shaped cooking utensils, pots, pans or skillets, to a heat distribution plate, an intermediate or buffer plate having a slightly concave, thin central region is applied around the plate to be brazed, or fused to the bottom of the utensil, the buffer plate having peripheral edges matching the edges of the plate; and the press further includes peripheral heating coils, for example energized by high frequency, to provide additional high frequency induction heating at the edges.
Inventors
- 👤 Bernard Dallet
- 👤 Jacques Doucerain
- 👤 Jean Moulin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:54
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/20; B23K1/002
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
207 words
Brazing or fusion press to join a work blank having rounded corners and a metal plate such that the plate will surround and match the corners comprising press means including a mandrel (4,5) supporting said work blank; pressure means (8, 7, 6; FIG. 2: 15) applying pressure against said workpiece, and a heat-generating inductor block (6) inductively heating the face of said plate (3) and said work blank (2); an intermediate susceptor plate (10, 100) interposed between said pressure means and said plate (3) and formed of ferromagnetic material and having a thin central portion which is slightly concave with respect to the bottom of said plate (3) and thickened peripheral portions having internal faces matching the circumference of said metal plate (3) when applied to said work blank (2) and surrounding the edge portions of said plate to apply both axial, as well as lateral pressure against said plate upon operation of the press means and the pressure means against each other; and a supplementary inductor (11) surrounding the peripheral portions of the susceptor plate to apply additional heat to the edge portions of said plate (3) and the work blank (2) and effect secure fusion of said plate and work blank over their entire interface.
Claim 2
Dependent Claim
207 words
Brazing or fusion press to join a work blank having rounded corners and a metal plate such that the plate will surround and match the corners comprising press means including a mandrel (4,5) supporting said work blank; pressure means (8, 7, 6; FIG. 2: 15) applying pressure against said workpiece, and a heat-generating inductor block (6) inductively heating the face of said plate (3) and said work blank (2); an intermediate susceptor plate (10, 100) interposed between said pressure means and said plate (3) and formed of ferromagnetic material and having a thin central portion which is slightly concave with respect to the bottom of said plate (3) and thickened peripheral portions having internal faces matching the circumference of said metal plate (3) when applied to said work blank (2) and surrounding the edge portions of said plate to apply both axial, as well as lateral pressure against said plate upon operation of the press means and the pressure means against each other; and a supplementary inductor (11) surrounding the peripheral portions of the susceptor plate to apply additional heat to the edge portions of said plate (3) and the work blank (2) and effect secure fusion of said plate and work blank over their entire interface.
Claim 3
Dependent Claim
38 words
Press according to claim 1, for use with a plate having preformed edge portions formed with a predetermined outer profile (FIG. 1) wherein said susceptor plate (10) has an interior face shaped to conform to said predetermined profile.
Claim 4
Dependent Claim
73 words
Press according to claim 1, for use with a plate (3) preformed to match the profile of the bottom of the work blank (2), (FIG. 1); and said intermediate susceptor plate is dished and located to receive pressure applied against the face thereof from said pressure means to effect, when pressure is applied against the outer edges thereof, compression of the peripheral portions inwardly and against the edge portions of said plate (3).
Claim 5
Dependent Claim
28 words
Press according to claim 3, wherein said intermediate susceptor plate (10) is located to have pressure applied thereto directly from said pressure means and over said inductor block.
Claim 6
Dependent Claim
74 words
Press according to claim 1, for use with a plate (3) adapted to be deformed upon application of pressure into the profile shape of said work blank (FIG. 2), wherein said pressure means comprises a housing (15) encircling said inductor block, said housing transmitting compressive force by said pressure means to said susceptor plate (100); and said supplementary inductor (11) encircles the peripheral portions of and susceptor plate and is secured to said housing.
Claim 7
Dependent Claim
37 words
Press according to claim 5, wherein said inductor block is located within said housing; and spring means (19) are provided biasing said inductor block (6) towards said susceptor plate (100) and resiliently maintaining Said inductor block thereagainst.
References Cited (Backward Citations)
FR73672E
Cited
GB1064903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |