Patent US3812318A successfully refreshed from Google Patents.
US3812318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for welding,fusing or heating workpiece utilizing energy of a light beam
Assignee: Panasonic Holdings Corp
•
Filing: 1972-11-24
•
Granted: 1974-05-21
•
Expires: 1992-11-24
Abstract
Abstract An apparatus for welding, fusing or heating a workpiece utilizing the energy of a light beam comprising an eliptical mirror, a light source of high-temperature are disposed at a first focus of the elliptical mirror and means for holding the workpiece at a second focus of the elliptical mirror. In the apparatus, cooling means is disposed adjacent to the elliptical mirror for cooling the light source.
Inventors
- 👤 S Yoshizumi
- 👤 Y Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:23
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/34; B; B23; B23K; B23K1/00; B23K1/005; H; H05; H05B; H05B3/00; H05B3/0033; H05B3/0038; H05B3/0061
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
Apparatus for welding, fusing or heating a workpiece by irradiating said workpiece with electromagnetic radiation, comprising: an elliptical mirror reflecting housing; a source of light energy located at a first focus of said mirror; means mounting said workpiece at a second focus of said mirror spaced from said first focus; a light energy permeable partition disposed between said first and second foci; cooling fluid injecting means located adjacent said mirror for injecting cooling fluid into said housing for cooling said source of light energy; and cooling fluid discharging means located adjacent said mirror for discharging cooling fluid from said housing; said injecting means and discharging means being separated from said second focus by said partition to prevent said cooling fluid from reaching said second focus.
Claim 2
Dependent Claim
125 words
Apparatus for welding, fusing or heating a workpiece by irradiating said workpiece with electromagnetic radiation, comprising: an elliptical mirror reflecting housing; a source of light energy located at a first focus of said mirror; means mounting said workpiece at a second focus of said mirror spaced from said first focus; a light energy permeable partition disposed between said first and second foci; cooling fluid injecting means located adjacent said mirror for injecting cooling fluid into said housing for cooling said source of light energy; and cooling fluid discharging means located adjacent said mirror for discharging cooling fluid from said housing; said injecting means and discharging means being separated from said second focus by said partition to prevent said cooling fluid from reaching said second focus.
Claim 3
Dependent Claim
39 words
The apparatus according to claim 1, further comprising an outer casing housing said mirror and discharging means, said casing having an opening therein in the path between said first and second foci; said partition being located in said opening.
Claim 4
Independent Claim
194 words
An apparatus for welding, fusing or heating a workpiece utilizing the energy of light, comprising: an elliptical mirror; a light source lamp of high-temperature radiation disposed at a first focus of said elliptical mirror; means for setting the workpiece at a second focus of said elliptical mirror; cooling fluid injecting means disposed adjacent to said elliptical mirror for injecting a cooling fluid for cooling said light source; cooling fluid discharging means disposed adjacent to said elliptical mirror for discharging the cooling fluid; an outer casing having a bottom plate with an opening therein; and a partition plate disposed within said outer casing at a position intermediate between said bottom plate and the top wall of said casing; said elliptical mirror being provided with an opening in the bottom thereof and mounted on the lower surface of said partition plate, said cooling fluid injection means being mounted on said partition plate and connected to said opening of said elliptical mirror for injecting the cooling fluid through said opening for cooling said light source, and said cooling fluid discharging means being mounted on said bottom plate for discharging the cooling fluid having cooled said light source.
Claim 5
Independent Claim
194 words
An apparatus for welding, fusing or heating a workpiece utilizing the energy of light, comprising: an elliptical mirror; a light source lamp of high-temperature radiation disposed at a first focus of said elliptical mirror; means for setting the workpiece at a second focus of said elliptical mirror; cooling fluid injecting means disposed adjacent to said elliptical mirror for injecting a cooling fluid for cooling said light source; cooling fluid discharging means disposed adjacent to said elliptical mirror for discharging the cooling fluid; an outer casing having a bottom plate with an opening therein; and a partition plate disposed within said outer casing at a position intermediate between said bottom plate and the top wall of said casing; said elliptical mirror being provided with an opening in the bottom thereof and mounted on the lower surface of said partition plate, said cooling fluid injection means being mounted on said partition plate and connected to said opening of said elliptical mirror for injecting the cooling fluid through said opening for cooling said light source, and said cooling fluid discharging means being mounted on said bottom plate for discharging the cooling fluid having cooled said light source.
Claim 6
Dependent Claim
97 words
An apparatus as claimed in claim 3, further comprising light shading means freely and movably disposed between said first and second focuses of said elliptical mirror for controlling the energy of light concentrated by said elliptical mirror, control means for controllIng the current or voltage supplied to said light source, and transducer means for transducing the mechanical motion of said light shading means into an electrical signal, said transducer means being connected to said control means for controlling the current or voltage supplied to said light source in response to the movement of said light shading means.
Claim 7
Independent Claim
119 words
An apparatus for welding, fusing or heating a workpiece utilizing the energy of light comprising an elliptical mirror, a light source lamp of high-temperature radiation disposed at a first focus of said elliptical mirror, said mirror having a bottom surface portion on the other side of said first focus from said second focus, means for setting the workpiece at adjacent to a second focus of said elliptical mirror, at least two cooling fluid injecting means disposed at a position near said second focus between said first and second focuses in such a manner that their injection ports are directed toward said light source, and cooling fluid discharging means connected to an opening in the bottom of said elliptical mirror.
Claim 8
Independent Claim
119 words
An apparatus for welding, fusing or heating a workpiece utilizing the energy of light comprising an elliptical mirror, a light source lamp of high-temperature radiation disposed at a first focus of said elliptical mirror, said mirror having a bottom surface portion on the other side of said first focus from said second focus, means for setting the workpiece at adjacent to a second focus of said elliptical mirror, at least two cooling fluid injecting means disposed at a position near said second focus between said first and second focuses in such a manner that their injection ports are directed toward said light source, and cooling fluid discharging means connected to an opening in the bottom of said elliptical mirror.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |