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US3764772A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for infrared soldering

Assignee: Siemens AG
•
Filing: 1972-01-14
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Granted: 1973-10-09
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Expires: 1992-01-14
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Abstract

Abstract A safe, easily controlled method and apparatus for infrared soldering of component means to a carrier plate means includes the steps of positioning a carrier plate means on a filter plate means, which filter plate is of a material that absorbs visible light and allows infrared light to pass therethrough, with the lower side of the carrier plate means generally resting on an upper side of the filter plate means, providing a source of infrared light below the filter plate means and projecting it through the filter plate means against the lower side of the carrier plate means whereby solder at a solder point on the carrier plate means is heated from the infrared light and melts. The component means which may be held in a holder means is moved into contact with the melted solder and the connection effected. The filter plate means may be preheated by a heating means in the base of the apparatus surrounding the filter plate means. A control means moves the holder means and adjusts the energy of the infrared light source in relation to the position of the holder means with respect to the carrier plate means. A reflector allows exact focusing of the infrared light on the carrier plate means at a point opposite the solder point.

Inventors

  • 👤 M Matuschek

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 09:27
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0446; B; B23; B23K; B23K1/00; B23K1/005; B23K1/0053; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3494

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 149 words
An apparatus for infrared soldering of a component onto a carrier plate having at least one solder point thereon, said apparatus comprising a base means for supporting a filter plate of a material that absorbs visible light and passes infrared light therethrough said filter plate having an upper surface for supporting the carrier plate on which the component is to be soldered, a source of infrared light supported below said base means, a reflecting means for focusing the infrared light from the source through said filter plate into a concentrated area thereabove, and control means for changing the energy level of said source so that the intensity of the infrared light focused into the area can be raised from a low intensity to an intensity sufficient to heat a solder point on the carrier adjacent the area to the melting point when a solder connection is to be made.
Claim 2
Independent Claim 149 words
An apparatus for infrared soldering of a component onto a carrier plate having at least one solder point thereon, said apparatus comprising a base means for supporting a filter plate of a material that absorbs visible light and passes infrared light therethrough said filter plate having an upper surface for supporting the carrier plate on which the component is to be soldered, a source of infrared light supported below said base means, a reflecting means for focusing the infrared light from the source through said filter plate into a concentrated area thereabove, and control means for changing the energy level of said source so that the intensity of the infrared light focused into the area can be raised from a low intensity to an intensity sufficient to heat a solder point on the carrier adjacent the area to the melting point when a solder connection is to be made.
Claim 3
Dependent Claim 41 words
An apparatus according to claim 1, wherein said base means supports said filter plate at is periphery and inCludes a heating means positioned adjacent the periphery of the filter plate, for heating the filter plate and a carrier plate supported thereon.
Claim 4
Dependent Claim 30 words
An apparatus according to claim 2 including a control means for said heating means and a thermostat means for maintaining the heat in said filter plate at a predetermined level.
Claim 5
Dependent Claim 88 words
An apparatus according to claim 2, which includes holder means for supporting a component which is to be soldered to the carrier plate, said holder means includes means for supporting the holder means at a position above the filter plate and operating means for changing the relative distance between the holder means and said filter plate, and wherein said control means is connected to said operating means so that the energy of the source is increased as the operating means moves said holder means toward the filter plate.
Claim 6
Dependent Claim 37 words
An apparatus according to claim 4, wherein said reflector means includes means for adjusting its position with respect to said source to enable changing the size of the concentrated area between a point and a larger area.
Claim 7
Dependent Claim 88 words
An apparatus according to claim 1, which includes holder means for supporting a component which is to be soldered to the carrer plate, said holder means includes means for supporting the holder means at a position above the filter plate and operating means for changing the relative distance between the holder means and said filter plate, and wherein said control means is connected to said operating means so that the energy of the source is increased as the operating means moves said holder means toward the filter plate.
Claim 8
Dependent Claim 37 words
An apparatus according to claim 1, wherein said reflector means includes means for adjusting its position with respect to said source to enable changing the size of the concentrated area between a point and a larger area.

References Cited (Backward Citations)

US2601011A Cited
US3205572A Cited
US3486223A Cited
US3486004A Cited
US3583063A Cited
US3562481A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-10-08 1977-04-09 1977-10-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-08 1981-04-09 1981-10-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-08 1985-04-09 1985-10-09 $7700.00 Window Closed / Lapsed

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