US3766623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsoldering tool for printed circuit board use
Assignee: Sunoco Inc
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Filing: 1972-08-28
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Granted: 1973-10-23
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Expires: 1992-08-28
Abstract
Abstract A tool for unsoldering, from a printed circuit board, a component (socket, or integrated circuit) having two spaced, parallel rows of pins which are soldered to the board. The tool comprises a metallic block having a length substantially equal to that of the component being removed and having formed in one face thereof two parallel, continuous grooves of U-shaped transverse cross-section which are adapted to respectively receive the two rows of pins. The block is heated by means of a cartridge heater which extends parallel to the grooves.
Inventors
- 👤 J Lerner
- 👤 R Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:24
CPC Classifications
H; H05; H05K; H05K13/00; B; B23; B23K; B23K3/00; B23K3/02; B23K3/025; H05K13/04; H05K13/0486; H05K13/0491; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53274; Y10T29/53283
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
An unsoldering tool for unsoldering from a printed circuit board a plurality of spaced pins disposed in a row of known length, comprising a metallic body of a length substantially equal to said known length, means forming in one face of said body a groove extending parallel to the length dimension of said body and having a length coextensive with said length dimension, said groove being sized to accommodate therein the ends of said pins and the solder joints thereat; and an elongated electrical heating means mounted in said body and extending parallel to the length dimension thereof.
Claim 2
Dependent Claim
98 words
An unsoldering tool for unsoldering from a printed circuit board a plurality of spaced pins disposed in a row of known length, comprising a metallic body of a length substantially equal to said known length, means forming in one face of said body a groove extending parallel to the length dimension of said body and having a length coextensive with said length dimension, said groove being sized to accommodate therein the ends of said pins and the solder joints thereat; and an elongated electrical heating means mounted in said body and extending parallel to the length dimension thereof.
Claim 3
Dependent Claim
21 words
Tool according to claim 1, including also means in said body providing for the attachment of a heat-insulating supporting means thereto.
Claim 4
Dependent Claim
21 words
Tool of claim 1, wherein said heating means comprises a cartridge-type electrical heater mounted in a bore formed in said body.
Claim 5
Dependent Claim
63 words
Tool according to claim 1, including also means forming in said one face of said body a second groove extending parallel to the length dimension of said body and having a length coextensive with said length dimension, said second groove being sized to accommodate therein the ends of a plurality of spaced pins disposed in a second row, and the solder joints thereat.
Claim 6
Dependent Claim
24 words
Structure of claim 4, wherein the length of said second row is known and is the same as the length of the first-mentioned row.
Claim 7
Dependent Claim
28 words
Structure of claim 4, wherein the spacing between the second and first-mentioned body grooves is equal to the known spacing between the second and first-mentioned rows of pins.
Claim 8
Dependent Claim
21 words
Structure of claim 4, wherein the heating means comprises a cartridge-type electrical heater mounted in a bore formed in said body.
Claim 9
Dependent Claim
22 words
Structure set forth in claim 4, including also means in said body providing for the attachment of a heat-insulating supporting means thereto.
Claim 10
Dependent Claim
51 words
Structure set forth in claim 4, including also means forming in said one face of said body a third groove extending parallel to the length dimension of said body and having a length coextensive with said length dimension, said third groove being located between and separating said second and first-mentioned grooves.
Claim 11
Dependent Claim
51 words
Structure of claim 9, wherein the cross-section of said third groove is larger than that of either of said second and said first-mentioned grooves, thereby to prevent the application of heat by said body to areas of said board other than the areas of said pins and of said solder joints.
References Cited (Backward Citations)
US3045336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |