US3673384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit extractor tool
Assignee: Unisys Corp
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Filing: 1970-11-02
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Granted: 1972-06-27
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Expires: 1990-11-02
Abstract
Abstract A hand tool is described for removing integrated circuit components or the like from printed circuit boards. The tool has a plierlike action for bringing a pair of heated jaws each provided with a flat electric resistance heater against the component leads for melting the solder attaching the component to the board. An adjustable stop prevents the heated jaws from contact and damaging the board. A pair of pincer jaws are mounted on one of the heated jaws so as to be movable in a direction transverse to the direction of movement of the heated jaws. Cams on the pincer jaws are actuated by the other heated jaw to close the pincer jaw in response to closure of the heated jaws. The pincer jaws have a turned end for gripping beneath a component for lifting the component after the solder is melted.
Inventors
- 👤 Per Aron Burman
- 👤 Harold E Drew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:46
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/04; H05K13/0486; H05K13/0491; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53274; Y10T29/53283
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
98 words
A circuit component extractor tool comprising: a pair of heated jaws; means for moving the heated jaws towards and away from each other for contacting a circuit component; a pair of pincer jaws adjacent the heated jaws for gripping the contacted component; and means responsive to movement of at least one of the heated jaws for moving the pincer jaws towards and away from each other in a direction orthogonal to the direction of the movement of the heated jaws, said pincer jaws moving towards each other when the heated jaws move towards each other and vice versa.
Claim 2
Dependent Claim
98 words
A circuit component extractor tool comprising: a pair of heated jaws; means for moving the heated jaws towards and away from each other for contacting a circuit component; a pair of pincer jaws adjacent the heated jaws for gripping the contacted component; and means responsive to movement of at least one of the heated jaws for moving the pincer jaws towards and away from each other in a direction orthogonal to the direction of the movement of the heated jaws, said pincer jaws moving towards each other when the heated jaws move towards each other and vice versa.
Claim 3
Dependent Claim
30 words
A tool as defined in claim 1 wherein the heated jaws comprise parallel opposed bare resistance elements; and further comprising: means for passing a controlled current through the resistance elements.
Claim 4
Dependent Claim
23 words
A tool as defined in claim 1, wherein the pincer jaws have opposed hooked ends for lifting engagement of a circuit component therebetween.
Claim 5
Dependent Claim
19 words
A tool as defined in claim 1 wherein the means for moving the heated jaws comprises pivot mounted handles.
Claim 6
Dependent Claim
54 words
A tool as defined in claim 1 wherein the means for moving the pincer jaws comprises a cam on each pincer jaw; means for mounting the pincer jaws on one heated jaw; and means on the other heated jaw for cooperating with the cams on the pincer jaws for camming the pincer jaws together.
Claim 7
Dependent Claim
27 words
A tool as defined in claim 1 further comprising means on said tool for limiting proximity of the tool to a circuit component between the heated jaws.
Claim 8
Dependent Claim
84 words
A hand tool comprising: a fixed jaw; a movable jaw; means interconnecting the fixed jaw and the movable jaw for movement towards and away from each other; a pair of pincer jaws; means for mounting the pincer jaws on the fixed jaw for movement in a direction transverse to the direction of relative movement of the fixed jaw and movable jaw; and means for moving the pincer jaws towards each other as a consequence of movement of the movable jaw towards the fixed jaw.
Claim 9
Dependent Claim
84 words
A hand tool comprising: a fixed jaw; a movable jaw; means interconnecting the fixed jaw and the movable jaw for movement towards and away from each other; a pair of pincer jaws; means for mounting the pincer jaws on the fixed jaw for movement in a direction transverse to the direction of relative movement of the fixed jaw and movable jaw; and means for moving the pincer jaws towards each other as a consequence of movement of the movable jaw towards the fixed jaw.
Claim 10
Dependent Claim
24 words
A hand tool as defined in claim 7 further comprising means for heating at least one of the fixed jaw and the movable jaw.
Claim 11
Dependent Claim
60 words
A tool as defined in claim 8 further comprising means for biasing the pincer jaws towards an open position; and wherein the means for moving the pincer jaws comprises cooperating camming means on said pincer jaws and movable jaw for camming the pincer jaws towards a closed position as the fixed jaw and movable jaw move towards a closed position.
Claim 12
Dependent Claim
128 words
A circuit component extractor tool comprising: a pair of opposed handles movable in a first direction towards and away from each other at at least one end thereof; a fixed jaw mounted on the end of one of the handles; a movable jaw mounted on the end of the other handle so as to be opposed to the fixed jaw; means for heating at least one of the movable jaw and the fixed jaw; a pair of pincer jaws mounted on the fixed jaw for movement in a second direction transverse to the first direction; means on the pincer jaws for gripping a circuit component; and means for moving the pincer jaws towards each other as a consequence of movement of the movable jaw towards the fixed jaw.
Claim 13
Dependent Claim
128 words
A circuit component extractor tool comprising: a pair of opposed handles movable in a first direction towards and away from each other at at least one end thereof; a fixed jaw mounted on the end of one of the handles; a movable jaw mounted on the end of the other handle so as to be opposed to the fixed jaw; means for heating at least one of the movable jaw and the fixed jaw; a pair of pincer jaws mounted on the fixed jaw for movement in a second direction transverse to the first direction; means on the pincer jaws for gripping a circuit component; and means for moving the pincer jaws towards each other as a consequence of movement of the movable jaw towards the fixed jaw.
Claim 14
Dependent Claim
50 words
A tool as defined in claim 10 wherein the means for heating comprises: a flat resistance heater on the fixed jaw; a flat resistance heater on the movable jaw parallel and opposed to the heater on the fixed jaw; and means for passing a controlled current through the resistance heaters.
Claim 15
Dependent Claim
65 words
A tool as defined in claim 10 wherein the means for mounting the pincer jaws comprises: a yoke attached to the fixed jaw, and a pivotal connection between the yoke and each of the pincer jaws; and wherein the yoke further comprises: an adjustable stop between the fixed jaw and the movable jaw for controlling the position of the jaws relative to a circuit component.
Claim 16
Dependent Claim
65 words
A tool as defined in claim 12 wherein each of the pincer jaws comprises: a camming portion; and the movable jaw includes a cam cooperating with the camming portion on the pincer jaws for camming the pincer jaws towards a closed position as the movable jaw and fixed jaw move towards a closed position; and means for biasing the pincer jaws towards an open position.
Claim 17
Dependent Claim
67 words
A tool as defined in claim 13 wherein each of the pincer jaws has an inverted L shape; the means on the pincer jaws for gripping a circuit component comprises an inwardly hooked end adjacent the tip of the leg of the inverted L; and wherein the camming portion comprises a portion on the base of the inverted L angulated relative to the plane of the L.
Claim 18
Dependent Claim
76 words
A tool as defined in claim 13 wherein the yoke comprises a general T shape having: one side of the cross bar of the T attached to the fixed jaw; the base portion of the T lying between the fixed jaw and the movable jaw for defining the adjustable stop; and an aperture in the other side of the cross bar of the T disposed around a portion of the movable jaw for limiting movement thereof.
Claim 19
Dependent Claim
50 words
A tool as defined in claim 15 wherein the means for heating comprises: a flat resistance heater on the fixed jaw; a flat resistance heater on the movable jaw parallel and opposed to the heater on the fixed jaw; and means for passing a controlled current through the resistance heaters.
References Cited (Backward Citations)
US303460A
Cited
US1281990A
Cited
CH300162A
Cited
US2768276A
Cited
US2978565A
Cited
US3230338A
Cited
US3143635A
Cited
US3343433A
Cited
US3518993A
Cited
US3529760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |