US4564135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chip carrier soldering tool
Assignee: Lockheed Martin Corp
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Filing: 1983-12-29
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Granted: 1986-01-14
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Expires: 2003-12-29
Abstract
Abstract A toll for melting solder on the contacts of a surface mounted electronic component and on the corresponding contacts of a printed circuit substrate to which it is to be soldered or from which it is to be de-soldered. The tool includes a conduit for conducting hot gas to the contacts. A diverter located in the interior of the conduit deflects hot gas away from the top of the surface mounted component and confines the hot gas to the periphery of the component.
Inventors
- 👤 Anthony J. Barresi
- 👤 Leonard Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:48
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/012; H; H05; H05K; H05K13/00; H05K13/04; H05K13/0486; H05K13/0491; B23K2101/00; B23K2101/36; B23K2101/42; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3431; H05K3/3442; H05K3/3494
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
126 words
A tool for use with surface mounted chip carriers, comprising: a conduit, having a lateral wall, an inlet end, and an outlet end, for conducting hot gas and including a flared portion in which the interior cross sectional area of said conduit increases with increasing distance from said inlet end; and an inner member disposed within said conduit, extending from said outlet end toward said inlet end and spaced from said lateral wall in the vicinity of said outlet end, said inner member and said lateral wall together defining an annular gas outlet orifice at said outlet end for converting a flow of gas having a solid cross section at said inlet end into a flow having a hollow tubular cross section at said outlet end.
Claim 2
Dependent Claim
126 words
A tool for use with surface mounted chip carriers, comprising: a conduit, having a lateral wall, an inlet end, and an outlet end, for conducting hot gas and including a flared portion in which the interior cross sectional area of said conduit increases with increasing distance from said inlet end; and an inner member disposed within said conduit, extending from said outlet end toward said inlet end and spaced from said lateral wall in the vicinity of said outlet end, said inner member and said lateral wall together defining an annular gas outlet orifice at said outlet end for converting a flow of gas having a solid cross section at said inlet end into a flow having a hollow tubular cross section at said outlet end.
Claim 3
Dependent Claim
22 words
The tool recited in claim 1 wherein: said conduit includes an inlet portion disposed between said inlet end and said flared portion.
Claim 4
Dependent Claim
34 words
The tool recited in claim 2 wherein: said inlet portion is a right circular cylindrical shell; and said conduit has a substantially straight central axis extending from said inlet end to said outlet end.
Claim 5
Dependent Claim
96 words
A tool for use with surface mounted chip carriers, comprising: a conduit, having lateral walls, an inlet end, an outlet end, and a flared portion in which the interior cross-section of said conduit increases with increasing distance from said inlet end, a section of said flared portion of said conduit having a four-sided pyramidal shape; and means within said conduit for converting a flow of gas having a solid cross-section at said inlet end into a flow having a hollow tubular cross section, said converting means being a substantially solid member having a four-sided pyramid shape.
Claim 6
Dependent Claim
96 words
A tool for use with surface mounted chip carriers, comprising: a conduit, having lateral walls, an inlet end, an outlet end, and a flared portion in which the interior cross-section of said conduit increases with increasing distance from said inlet end, a section of said flared portion of said conduit having a four-sided pyramidal shape; and means within said conduit for converting a flow of gas having a solid cross-section at said inlet end into a flow having a hollow tubular cross section, said converting means being a substantially solid member having a four-sided pyramid shape.
Claim 7
Dependent Claim
14 words
The tool recited in claim 4 wherein: said conduit comprises a one-piece flared tube.
Claim 8
Dependent Claim
116 words
Apparatus for use with surface mounted chip carriers, comprising: a conduit, having lateral walls, an inlet end, an outlet end, and a flared portion in which the interior cross section of said conduit increases with increasing distance from said inlet end toward said outlet end, for conducting hot gas; a diverter device within said flared portion, said diverter device having a main portion whose cross section increases with increasing distance from said inlet end toward said outlet end of said conduit; said diverter device being positioned within said flared portion to divert said flow from the central portion of said conduit and to leave a channel for gas flow surrounding said diverter within said flared portion.
Claim 9
Dependent Claim
116 words
Apparatus for use with surface mounted chip carriers, comprising: a conduit, having lateral walls, an inlet end, an outlet end, and a flared portion in which the interior cross section of said conduit increases with increasing distance from said inlet end toward said outlet end, for conducting hot gas; a diverter device within said flared portion, said diverter device having a main portion whose cross section increases with increasing distance from said inlet end toward said outlet end of said conduit; said diverter device being positioned within said flared portion to divert said flow from the central portion of said conduit and to leave a channel for gas flow surrounding said diverter within said flared portion.
Claim 10
Dependent Claim
22 words
The apparatus recited in claim 6 wherein: said conduit includes an inlet portion disposed between said inlet end and said flared portion.
Claim 11
Dependent Claim
22 words
The apparatus recited in claim 7 further comprising: means for coupling and supporting said diverter to said lateral walls of said conduit.
Claim 12
Dependent Claim
25 words
The apparatus recited in claim 8 wherein: said coupling and support means extends into said inlet portion and is secured to said lateral walls therein.
Claim 13
Dependent Claim
20 words
The apparatus recited in claim 7 wherein: said inlet portion is in the form of a right circular cylindrical shell.
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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) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |