US3604391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying ink to holes
Assignee: AT&T Inc
•
Filing: 1969-05-16
•
Granted: 1971-09-14
•
Expires: 1989-05-16
Abstract
Abstract Material is applied to holes in a workpiece by transfer pins. The material is first introduced into holes in a template arranged in a pattern corresponding to the holes in the workpiece. Free ends of the transfer pins are then moved through the holes in the template to transfer the material to the holes in the workpiece. The material may then be pulled through the holes by a vacuum.
Inventors
- 👤 Joseph C Mallia
- 👤 John C Walz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:01
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/40; H05K3/4038; H05K3/4053; H05K2201/00; H05K2201/09; H05K2201/09818; H05K2201/09981; H05K2203/00; H05K2203/01; H05K2203/0195; H05K2203/03; H05K2203/0338; H05K2203/08; H05K2203/082
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
197 words
An apparatus for applying catalytic ink to the periphery and walls of holes formed in a predetermined pattern in a printed wiring board, said apparatus comprising: a reciprocable carriage for receiving the printed wiring board; a perforated plate having holes formed therein in a pattern corresponding to the pattern of the holes in said printed wiring board; applicator means for introducing the catalytic ink into the holes formed in said perforated plate; means for moving said reciprocable carriage to a position adjacent said perforated plate; positioning means responsive to movement to said adjacent position for accurately positioning said reciprocable carriage so that said holes in said printed wiring board are in registration with the corresponding holes in said perforated plate; a vertically movable member; a plurality of transfer pins mounted vertically in said vertically movable member and aligned with said holes in said perforated plate; and lifting means for raising the vertically movable member so that the upper ends of said plurality of pins move through the holes of said perforated plate to pick up the catalytic ink introduced therein and apply the ink to the periphery and walls of said holes in said printed wiring board.
Claim 2
Independent Claim
197 words
An apparatus for applying catalytic ink to the periphery and walls of holes formed in a predetermined pattern in a printed wiring board, said apparatus comprising: a reciprocable carriage for receiving the printed wiring board; a perforated plate having holes formed therein in a pattern corresponding to the pattern of the holes in said printed wiring board; applicator means for introducing the catalytic ink into the holes formed in said perforated plate; means for moving said reciprocable carriage to a position adjacent said perforated plate; positioning means responsive to movement to said adjacent position for accurately positioning said reciprocable carriage so that said holes in said printed wiring board are in registration with the corresponding holes in said perforated plate; a vertically movable member; a plurality of transfer pins mounted vertically in said vertically movable member and aligned with said holes in said perforated plate; and lifting means for raising the vertically movable member so that the upper ends of said plurality of pins move through the holes of said perforated plate to pick up the catalytic ink introduced therein and apply the ink to the periphery and walls of said holes in said printed wiring board.
Claim 3
Dependent Claim
53 words
The apparatus claimed in claim 1; comprising in addition: vacuum means located above the reciprocable carriage for briefly applying a partial vacuum to produce a pulse of airflow through said holes in said printed wiring board so that said catalytic ink spreads smoothly about and within said holes in said printed wiring board.
Claim 4
Dependent Claim
62 words
The apparatus claimed in claim 1 wherein said applicator means comprises means for applying catalytic ink across the entire perforated plate while said reciprocable carriage is being moved to said adjacent position, comprising in addition: squeegee means for removing said catalytic ink from said perforated plate while leaving a predetermined amoUnt of said catalytic ink in said holes in said perforated plate.
Claim 5
Dependent Claim
53 words
The apparatus claimed in claim 3; comprising in addition: vacuum means located above the reciprocable carriage for briefly applying a partial vacuum to produce a pulse of airflow through said holes in said printed wiring board so that said catalytic ink spreads smoothly about and within said holes in said printed wiring board.
Claim 6
Dependent Claim
55 words
The apparatus claimed in claim 1, wherein said plurality of pins are mounted such that their upper ends project partly into but below the top of the corresponding holes in said perforated plate when said vertically movable member is at its lowest position to define a cavity for receiving a predetermined volume of said material.
Claim 7
Dependent Claim
53 words
The apparatus claimed in claim 5; comprising in addition: vacuum means located above the reciprocable carriage for briefly applying a partial vacuum to produce a pulse of airflow through said holes in said printed wiring board so that said catalytic ink spreads smoothly about and within said holes in said printed wiring board.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |