Patent US3566071A successfully refreshed from Google Patents.
US3566071A
Expired / Lapsed
US
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Method of metals joining
Assignee: Westinghouse Electric Corp
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Filing: 1966-10-12
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Granted: 1971-02-23
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Expires: 1986-10-12
Abstract
Abstract A process of joining metals by directing a focused electron beam on a joint to be welded and by moving the beam longitudinally of the joint whereby the adjoining walls of the work are melted and flow together to form a seam weld. The intensity of the beam is sufficient to penetrate to a depth which is substantially greater than the width of the melted portion to produce a deep narrow weld. If spot welds are desired the step of moving may be omitted. Along with the steps above recited the beam may be oscillated back and forth across the joint with a magnitude of the beam traversed small relative to the depth that the beam penetrates the work. All of the foregoing steps are preferably performed in a vacuum.
Inventors
- 👤 Richard L Matchett
- 👤 George Burton Jr
- 👤 James F Smith
- 👤 William L Frankhouser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:43
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/0046; B23K15/0053; H; H01; H01J; H01J37/00; H01J37/02; H01J37/18; H01J37/30; H01J37/3002; H01J37/3007; H01J37/302; B23K2101/00; B23K2101/04; B23K2101/14; B23K2103/00; B23K2103/02; B23K2103/04; B23K2103/05; B23K2103/08; B23K2103/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
208 words
The method of producing an array of channels, contiguous channels being separated by a relatively small distance of the order of .1 inches, the said method comprising forming an assembly consisting of strips separated by spacers, each of said strips bounding a channel on each side thereof and constituting sidewalls, for said channels on each side thereof, the wall thickness of each said strip between said last-named channels being less than about .1 inches, each strip and its contiguous spacers forming a pair of joints to be welded, said joints being less than about .1 inches apart, maintaining said assembly at low pressure less than about 5 microns of mercury, projecting a narrow beam of electrons near said pair of joints, oscillating said beam back and forth over each of said joints in turn transversely of the strip defining said joints in fusing relationship with said joints so that said beam as it oscillates periodically overlaps successively first one of said pair of joints and then the other of said pair, and advancing said beam longitudinally to the ends of each of said last-named strip, said beam being advanced at a rate such that said spacers are welded to said last-named strip to form a mechanically strong bond.
Claim 2
Independent Claim
208 words
The method of producing an array of channels, contiguous channels being separated by a relatively small distance of the order of .1 inches, the said method comprising forming an assembly consisting of strips separated by spacers, each of said strips bounding a channel on each side thereof and constituting sidewalls, for said channels on each side thereof, the wall thickness of each said strip between said last-named channels being less than about .1 inches, each strip and its contiguous spacers forming a pair of joints to be welded, said joints being less than about .1 inches apart, maintaining said assembly at low pressure less than about 5 microns of mercury, projecting a narrow beam of electrons near said pair of joints, oscillating said beam back and forth over each of said joints in turn transversely of the strip defining said joints in fusing relationship with said joints so that said beam as it oscillates periodically overlaps successively first one of said pair of joints and then the other of said pair, and advancing said beam longitudinally to the ends of each of said last-named strip, said beam being advanced at a rate such that said spacers are welded to said last-named strip to form a mechanically strong bond.
Claim 3
Independent Claim
195 words
The method of producing an array of channels, contiguous channels being separated by relatively small distances of the order of .1 inches, the said method comprising forming an assembly consisting of strips separated by spacers, each of said strips bounding a channel on each side thereof, the thickness of each said strip between said last-named channels being less than abouT .1 inches, each strip and its contiguous spacers forming a pair of joints to be welded less than about .1 inches apart, maintaining said assembly at low pressure less than 5 microns of mercury, producing a beam of electrons, focusing said beam of electrons near said pair of joints formed by each of said strips, the cross section of said beam near said strips where said beam is focused being as small as practicable, and being substantially smaller than the said spacing between said joints, and advancing said beam longitudinally of the ends of each of said strips near each of said pair of joints in its turn, in fusing relationship with said joints, said beam being advanced at a rate such that said spacers are welded to said strips to form a fluid-tight seal.
Claim 4
Independent Claim
195 words
The method of producing an array of channels, contiguous channels being separated by relatively small distances of the order of .1 inches, the said method comprising forming an assembly consisting of strips separated by spacers, each of said strips bounding a channel on each side thereof, the thickness of each said strip between said last-named channels being less than abouT .1 inches, each strip and its contiguous spacers forming a pair of joints to be welded less than about .1 inches apart, maintaining said assembly at low pressure less than 5 microns of mercury, producing a beam of electrons, focusing said beam of electrons near said pair of joints formed by each of said strips, the cross section of said beam near said strips where said beam is focused being as small as practicable, and being substantially smaller than the said spacing between said joints, and advancing said beam longitudinally of the ends of each of said strips near each of said pair of joints in its turn, in fusing relationship with said joints, said beam being advanced at a rate such that said spacers are welded to said strips to form a fluid-tight seal.
Claim 5
Independent Claim
146 words
The method of producing fusion zones of joints of work, the spacing between adjacent of said joints being small, the said method comprising producing a cloud of electrons, impressing on said electrons an accelerating voltage to produce a beam of electrons, projecting on said work, in fusing relationship with each of said joints in its turn, a beam of electrons concentrated near each of said joint in its turn, said beam having a diameter of about .01 inches near said joint, oscillating said beam while so concentrated back and forth over each of said joints in its turn while advancing said beam relative to said last-named joint to produce said zone along each said joint in its turn, the current of said beam being so related to said accelerating voltage that the desired high depth-to-width ratio of the fusion zone at each said joint is obtained.
Claim 6
Independent Claim
146 words
The method of producing fusion zones of joints of work, the spacing between adjacent of said joints being small, the said method comprising producing a cloud of electrons, impressing on said electrons an accelerating voltage to produce a beam of electrons, projecting on said work, in fusing relationship with each of said joints in its turn, a beam of electrons concentrated near each of said joint in its turn, said beam having a diameter of about .01 inches near said joint, oscillating said beam while so concentrated back and forth over each of said joints in its turn while advancing said beam relative to said last-named joint to produce said zone along each said joint in its turn, the current of said beam being so related to said accelerating voltage that the desired high depth-to-width ratio of the fusion zone at each said joint is obtained.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |