US3589224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die punching printed circuit
Assignee: Buckbee Mears Co
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Filing: 1968-10-14
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Granted: 1971-06-29
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Expires: 1988-10-14
Abstract
Abstract Circuit patterns are formed by punching or stamping them out of a sheet of material with a die punch. The severed sections are then separated by holding one of the sections in place in the die punch with a vacuum. The same apparatus that stamps out the circuits is also used for attaching the punched-out circuit pattern to a supporting layer.
Inventors
- 👤 John J Frantzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:52
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/20; H05K3/202; H05K3/02; H05K3/04; H05K3/041; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0108; H05K2203/0113; H05K2203/08; H05K2203/085; H05K2203/15; H05K2203/1545; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2066; Y10T83/207; Y10T83/2074; Y10T83/2079; Y10T83/2092; Y10T83/2183; Y10T83/2185
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
77 words
Apparatus for making circuit patterns by stamping them out of a sheet of material comprising: a. a die having a cutting face containing raised ridges to form cutters defining the edges of the desired circuit patterns; b. pressure plate means for pressing a sheet of material against the die face until the cutters sever the sheet of material; and c. means for applying a vacuum to hold one severed section in place while separating the severed section.
Claim 2
Dependent Claim
77 words
Apparatus for making circuit patterns by stamping them out of a sheet of material comprising: a. a die having a cutting face containing raised ridges to form cutters defining the edges of the desired circuit patterns; b. pressure plate means for pressing a sheet of material against the die face until the cutters sever the sheet of material; and c. means for applying a vacuum to hold one severed section in place while separating the severed section.
Claim 3
Dependent Claim
64 words
The apparatus as described in claim 1 wherein the vacuum applying means comprises: a number of passageways having openings on the face of the pressure plate connected to a vacuum source, said openings being in those areas corresponding to the circuit pattern sections for holding the circuit pattern sections in place on the pressure plate when the latter is moved away from the die.
Claim 4
Dependent Claim
41 words
The apparatus as in claim 1 wherein the vacuum applying means comprises: a number of passageways having openings on the face of the die connected to a vacuum source, said openings being in those areas corresponding to the noncircuit pattern sections.
Claim 5
Dependent Claim
44 words
The apparatus as described in claim 3 wherein said passageways comprise: depressed areas in said die face between the cutters in those areas corresponding to the noncircuit pattern section; and chambers in the die body communicating between the vacuum source and said depressed areas.
Claim 6
Dependent Claim
48 words
The apparatus as described in claim 4 wherein the areas on the die face corresponding to the circuit pattern sections are elevated above the depressed areas whereby the noncircuit pattern sections are drawn down into the depressed areas by the vacuum while the circuit pattern sections remain elevated.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |