US4730095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing planar electrical circuits
Assignee: Durgo AG
•
Filing: 1986-07-25
•
Granted: 1988-03-08
•
Expires: 2006-07-25
Abstract
Abstract The most essential of this novel production method of planar circuit or oscillating circuits is that the most important steps for extricating the conduit tracts on at least one electrically conductive layers is performed by laser beams, whereby already the initial reference points for the plurality of circuits to be produced are practically simultaneously applied by lasers and the application of the laser technique allows, furthermore, an exact correcting of the elements of the circuit by a simple reworking and highly precise circuits are formed which are extremely economically produced.
Inventors
- 👤 Poul Richter-Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:33
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; G08B13/24; G08B13/2402; G08B13/2405; G08B13/2414; G08B13/242; G08B13/2428; G08B13/2437; G08B13/244; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/041; H01F41/045; H05; H05K; H05K1/00; H05K1/16; H05K1/165; H05K3/00; H05K3/02; H05K3/027; H10; H10D; H10D84/00; H10D84/01; B; B32; B32B; B32B2519/00; B32B2519/02; H05K1/02; H05K1/03; H05K1/0393; H05K1/162; H05K2203/00; H05K2203/10; H05K2203/107; H05K2203/14; H05K2203/1476; H05K2203/15; H05K2203/1545; H05K2203/17; H05K2203/171; H05K3/22; H05K3/222
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
251 words
A method of producing a plurality of equal printed circuits on a common, planar insulating carrier of which at least one side is provided with an electrically conducting layer for producing oscillating circuits of which every one comprises an electrical circuit closed in itself and including spirally arranged conduit tracts forming at least one induction coil and including at least one capacitor, comprising the steps of: (a) applying by means of laser rays a plurality of reference perforations on at least one of a sheet and web-shaped composite body formed of an insulating carrier and at least on one side thereof an applied conducting layer, each individual one of said perforations being allocated to one respective oscillating circuit to be produced and the mutual distances of which depending from the dimensions of the circuits to be produced, which perforations serve as reference points for the application of apparatus for the performance of further working steps; (b) thereafter extricating the rough contours of the oscillating circuits and of the intended capacitor surfaces at the at least one electrically conductive covering layers; (c) thereafter bringing the surfaces serving for the forming of the capacitors to the final dimensions and extricating, by means of at least one of a program and computer controlled laser rays, the circuit tracts forming the oscillating circuit; and (d) to finally produce the oscillating circuits determining the actual electrical values and comparing such with the design values to carry out corresponding adjustments by an additional working by laser rays.
Claim 2
Independent Claim
251 words
A method of producing a plurality of equal printed circuits on a common, planar insulating carrier of which at least one side is provided with an electrically conducting layer for producing oscillating circuits of which every one comprises an electrical circuit closed in itself and including spirally arranged conduit tracts forming at least one induction coil and including at least one capacitor, comprising the steps of: (a) applying by means of laser rays a plurality of reference perforations on at least one of a sheet and web-shaped composite body formed of an insulating carrier and at least on one side thereof an applied conducting layer, each individual one of said perforations being allocated to one respective oscillating circuit to be produced and the mutual distances of which depending from the dimensions of the circuits to be produced, which perforations serve as reference points for the application of apparatus for the performance of further working steps; (b) thereafter extricating the rough contours of the oscillating circuits and of the intended capacitor surfaces at the at least one electrically conductive covering layers; (c) thereafter bringing the surfaces serving for the forming of the capacitors to the final dimensions and extricating, by means of at least one of a program and computer controlled laser rays, the circuit tracts forming the oscillating circuit; and (d) to finally produce the oscillating circuits determining the actual electrical values and comparing such with the design values to carry out corresponding adjustments by an additional working by laser rays.
Claim 3
Dependent Claim
15 words
The method of claim 1, wherein said reference perforations are formed along a rectilinear line.
Claim 4
Dependent Claim
24 words
The method of claim 1, wherein said reference perforations are formed in a two dimensional pattern in the form of a system of coordinates.
Claim 5
Dependent Claim
24 words
The method of claim 1, wherein a plurality of simultaneously operating laser apparatus are used for forming said reference perforations and/or said conduit tracts.
Claim 6
Dependent Claim
20 words
The method of claim 1, wherein the adjusting operations are performed by the same lasers which extricate the conduit tracts.
References Cited (Backward Citations)
US3388461A
Cited
US4184062A
Cited
US4182024A
Cited
US4190854A
Cited
US4381441A
Cited
US4377736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |