US4528746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for dismounting integrated circuit devices
Assignee: Hakko Corp
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Filing: 1983-05-31
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Granted: 1985-07-16
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Expires: 2003-05-31
Abstract
Abstract A device for dismounting an integrated circuit package soldered on a printed electric circuit board by melting the solder, including an electric heater which heats a heating shank disposed so as to contact upper portions of soldered portions of a plurality of leads soldered to circuit ends on an electric circuit board wherein the leads extending from side walls of an IC package mounted on the board. A suction cup member is disposed in a center portion of the heating shank so as to face an upper surface of the IC package and dismount the IC package sucked thereby from the board after melting the solder.
Inventors
- 👤 Hiroshi Yoshimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:37
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/04; H05K13/0486; H05K13/0491; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/53191; Y10T29/53274; Y10T29/53283
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
A device for dismounting an IC package, comprising a handle, a heating tip receiving heat from an electric heater projecting from one end of the handle, a heat conductive sleeve removably mounted on a lower end of said heating tip, a heating shank means with four pending legs extending downwardly and disposed below said sleeve, and a suction cup holder disposed downwardly of a center of a top wall member of said heating shank means, a suction cup mounted on a lower end of said holder, said holder at an upper end thereof including a stopper head and being slidably supported within a hole formed in said top wall member of said heating shank means, and a coil spring positioned between said top wall member and a nut disposed to be engaged with a lower end of said suction cup holder.
Claim 2
Independent Claim
141 words
A device for dismounting an IC package, comprising a handle, a heating tip receiving heat from an electric heater projecting from one end of the handle, a heat conductive sleeve removably mounted on a lower end of said heating tip, a heating shank means with four pending legs extending downwardly and disposed below said sleeve, and a suction cup holder disposed downwardly of a center of a top wall member of said heating shank means, a suction cup mounted on a lower end of said holder, said holder at an upper end thereof including a stopper head and being slidably supported within a hole formed in said top wall member of said heating shank means, and a coil spring positioned between said top wall member and a nut disposed to be engaged with a lower end of said suction cup holder.
Claim 3
Independent Claim
167 words
A device for dismounting an IC package, comprising a pistol-shaped handle, a tip mounted on an electric heater projecting from a pipe within said handle, a heat conductive sleeve which is removably mounted on a lower portion of said tip in a close relationship with each other, a heating shank means with four pending legs extending downwardly as disposed below said sleeve, a hole formed in a top wall member of said heating shank means, a sucker holder slidably inserted in said hole, a stopper formed above said top wall member of said sucker holder, a nut for mounting a sucker on a lower portion of said sucker holder, a coil spring inserted between said nut and said top wall member, an air tube extending through the center of said electric heater and said tip, a conduit connector disposed on a grip end portion of said handle connected with said air tube, and an air hole extending through said sucker holder and said sucker at their centers.
Claim 4
Independent Claim
167 words
A device for dismounting an IC package, comprising a pistol-shaped handle, a tip mounted on an electric heater projecting from a pipe within said handle, a heat conductive sleeve which is removably mounted on a lower portion of said tip in a close relationship with each other, a heating shank means with four pending legs extending downwardly as disposed below said sleeve, a hole formed in a top wall member of said heating shank means, a sucker holder slidably inserted in said hole, a stopper formed above said top wall member of said sucker holder, a nut for mounting a sucker on a lower portion of said sucker holder, a coil spring inserted between said nut and said top wall member, an air tube extending through the center of said electric heater and said tip, a conduit connector disposed on a grip end portion of said handle connected with said air tube, and an air hole extending through said sucker holder and said sucker at their centers.
Claim 5
Dependent Claim
33 words
A device according to claim 2 further comprising a trigger disposed within a grip portion of said pistol-shaped handle so as to control a switch connected with an electric circuit of said heater.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |