US3759436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solder shield for contacts on printed circuit boards
Assignee: General Electric Co
•
Filing: 1970-03-02
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Granted: 1973-09-18
•
Expires: 1990-03-02
Abstract
Abstract A shield for masking electrical contacts on printed circuit boards during flow soldering. The shield is made of three elongated pieces of printed circuit board material assembled to have a generally U-shaped cross section. The edge of the board carrying the contacts to be masked is inserted into the bight of the U. The shield pieces are forced together by spring-loaded bolts to seal the inserted edge.
Inventors
- 👤 P Foster
- 👤 R Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:06
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/08; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3452; H05K1/00; H05K1/02; H05K1/11; H05K1/117; H05K2203/00; H05K2203/05; H05K2203/0548; H05K2203/0557; H05K3/3465; H05K3/3468
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
A shield for masking selected areas on a printed circuit board during soldering operations comprising: a. first and second strips of solid material to be positioned on opposite sides of the printed circuit board overlying the areas to be masked; b. a plurality of threaded members, each of which is secured to one of said first and second strips in a manner which limits axial movement between the threaded member and the said one strip; c. a plurality of spring members, each of which is held in position against the other of said first and second strips by one of the threaded members; and d. a plurality of nuts, each being threaded on one of the threaded members and being adapted to force one of the spring members into contact with the adjacent strip, whereby said first and second strips are clamped against opposite surfaces of the printed circuit board.
Claim 2
Dependent Claim
150 words
A shield for masking selected areas on a printed circuit board during soldering operations comprising: a. first and second strips of solid material to be positioned on opposite sides of the printed circuit board overlying the areas to be masked; b. a plurality of threaded members, each of which is secured to one of said first and second strips in a manner which limits axial movement between the threaded member and the said one strip; c. a plurality of spring members, each of which is held in position against the other of said first and second strips by one of the threaded members; and d. a plurality of nuts, each being threaded on one of the threaded members and being adapted to force one of the spring members into contact with the adjacent strip, whereby said first and second strips are clamped against opposite surfaces of the printed circuit board.
Claim 3
Dependent Claim
61 words
A shield for masking selected areas on a printed circuit board during soldering operations comprising: a. an elongated member generally U-shaped in cross section defining a bight portion for receiving the printed circuit board area to be masked; and b. clamping means for urging arms of said member toward one another into contact with opposite surfaces of the printed circuit board.
Claim 4
Dependent Claim
61 words
A shield for masking selected areas on a printed circuit board during soldering operations comprising: a. an elongated member generally U-shaped in cross section defining a bight portion for receiving the printed circuit board area to be masked; and b. clamping means for urging arms of said member toward one another into contact with opposite surfaces of the printed circuit board.
Claim 5
Dependent Claim
19 words
A shield as recited in claim 2 wherein said elongated member is made from a printed circuit board material.
Claim 6
Dependent Claim
47 words
A shield as recited in claim 3 wherein said elongated member comprises: a. first and second generally rectangular slabs of printed circuit board material; and b. a third, rectangular slab of printed circuit board Material narrower than and interposed between the first and second generally rectangular slabs.
Claim 7
Dependent Claim
90 words
A shield as recited in claim 4 wherein the clamping means comprises: a. a plurality of bolts extending through the first and third slabs into the second slab, said bolts being spaced along the length of said elongated member; b. a plurality of coil springs, each of said springs being mounted on one of said bolts; and c. a plurality of nuts, each of said nuts being threaded onto one end of one of said bolts to compress one of said springs against the first slab of said elongated member.
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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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |