US3873890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal construction for electrical circuit device
Assignee: Allen Bradley Co LLC
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Filing: 1973-08-20
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Granted: 1975-03-25
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Expires: 1993-08-20
Abstract
Abstract An electrical circuit device having a ceramic substrate including a thick or thin film circuit on at least one surface thereof and an elongated groove formed in a surface substantially normal to the first mentioned surface. In one embodiment the elongated groove is divided into juxtaposed alternately distended and constricted portions, the constricted portions being adapted to receive an end portion of relatively flat lead wires. Prior to insertion of the lead wires, the respective constricted groove portions and the surface portion extending laterally therefrom are first metallized to define conducting areas leading to the respective lead wires. The lead wires are inserted and soldered in place.
Inventors
- 👤 Richard J Beckman
- 👤 John C Blanchard
- 👤 Robert Marshall
- 👤 Orville R Penrod
- 👤 Alten Theodor Von
- 👤 Oscar Denes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3405; H10; H10W; H10W90/00; H05K2201/00; H05K2201/09; H05K2201/09145; H05K2201/09163; H05K2201/10; H05K2201/10227; H05K2201/1034; H05K3/40; H05K3/403
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
146 words
In an electrical circuit device including a substrate of electrically insulating material having a first planar surface upon which is disposed electrical circuit components: a planar termination surface disposed in a plane angularly relative to said first mentioned circuit supporting surface, said termination surface defining a groove; a plurality of laterally spaced terminal leads each having an end portion seated in said groove; a plurality of laterally spaced continuous conducting edge termination coating areas each deposited transversely of said groove and underlying the end portion of one of said laterally spaced leads, each of said termination coating areas extending from its associated lead onto said first planar surface and in electrical contact with the electrical circuitry disposed thereon; and a solder coating on each of said edge termination coating areas and the end portion of its associated lead to retain and anchor said lead in place.
Claim 2
Dependent Claim
146 words
In an electrical circuit device including a substrate of electrically insulating material having a first planar surface upon which is disposed electrical circuit components: a planar termination surface disposed in a plane angularly relative to said first mentioned circuit supporting surface, said termination surface defining a groove; a plurality of laterally spaced terminal leads each having an end portion seated in said groove; a plurality of laterally spaced continuous conducting edge termination coating areas each deposited transversely of said groove and underlying the end portion of one of said laterally spaced leads, each of said termination coating areas extending from its associated lead onto said first planar surface and in electrical contact with the electrical circuitry disposed thereon; and a solder coating on each of said edge termination coating areas and the end portion of its associated lead to retain and anchor said lead in place.
Claim 3
Dependent Claim
37 words
The electrical circuit device of claim 1, wherein the said groove includes juxtaposed distended and constricted portions, and wherein the respective end portions of said terminal leads are each seated in respective ones of said constricted portions.
Claim 4
Dependent Claim
25 words
The electrical circuit device of claim 1, wherein said groove is substantially coextensive with the planar termination surface to define closed, oppositely disposed end portions.
Claim 5
Dependent Claim
44 words
The electrical circuit device of claim 2, wherein the constricted portion of said groove is of rectangular cross-section and the terminal lead received thereby is of similar cross-section, and wherein the thickness of said lead is slightly less than that of said constricted portion.
Claim 6
Dependent Claim
19 words
The electrical circuit device of claim 1, wherein a conformal, non-conductive coating is disposed on said electrical circuit components.
Claim 7
Independent Claim
190 words
A method for anchoring and connecting terminal leads to a substrate containing electrical circuit components on a surface thereof, comprising: forming a substrate having a circuit supporting, planar surface and a planar termination surface disposed in a plane angularly relative to said circuit supporting surface, and simultaneously forming an elongated groove extending lengthwise of said termination surface, said groove being formed with juxtaposed distended and constricted portions; applying and firing a continuous conducting coating disposed transversely of said termination surface inwardly of a groove portion and overlapping a portion of said circuit supporting surface; applying and firing a layer of electrical circuit components on said circuit supporting surface with connecting portions electrically connected to the said conducting coating; providing a plurality of spaced apart terminal leads formed integrally with and extending from a common carrier member; inserting one end of each of said terminal leads into respective constricted portions of said groove; and soldering said leads to the coated surface of said constricted portions of said groove and to the conducting coating surface of said termination surface; and removing said carrier member after the solder has been cooled and solidified.
Claim 8
Independent Claim
190 words
A method for anchoring and connecting terminal leads to a substrate containing electrical circuit components on a surface thereof, comprising: forming a substrate having a circuit supporting, planar surface and a planar termination surface disposed in a plane angularly relative to said circuit supporting surface, and simultaneously forming an elongated groove extending lengthwise of said termination surface, said groove being formed with juxtaposed distended and constricted portions; applying and firing a continuous conducting coating disposed transversely of said termination surface inwardly of a groove portion and overlapping a portion of said circuit supporting surface; applying and firing a layer of electrical circuit components on said circuit supporting surface with connecting portions electrically connected to the said conducting coating; providing a plurality of spaced apart terminal leads formed integrally with and extending from a common carrier member; inserting one end of each of said terminal leads into respective constricted portions of said groove; and soldering said leads to the coated surface of said constricted portions of said groove and to the conducting coating surface of said termination surface; and removing said carrier member after the solder has been cooled and solidified.
Claim 9
Dependent Claim
120 words
In an electrical circuit device including a substrate of electrically insulating material having a first planar surface upon which is disposed electrical circuit components: A termination surface having a groove disposed therein and defining a plurality of juxtaposed alternately distended and constricted portions; a plurality of laterally spaced terminal leads each having an end portion seated in a constricted portion of said groove; a plurality of laterally spaced continuous conducting termination coating areas each area being deposited on said termination surface across a constricted portion of said groove and underlying the lead end portion seated therein; a solder coating on the termination coating and on the respective end portions of said leads to retain and anchor the leads in place.
Claim 10
Dependent Claim
120 words
In an electrical circuit device including a substrate of electrically insulating material having a first planar surface upon which is disposed electrical circuit components: A termination surface having a groove disposed therein and defining a plurality of juxtaposed alternately distended and constricted portions; a plurality of laterally spaced terminal leads each having an end portion seated in a constricted portion of said groove; a plurality of laterally spaced continuous conducting termination coating areas each area being deposited on said termination surface across a constricted portion of said groove and underlying the lead end portion seated therein; a solder coating on the termination coating and on the respective end portions of said leads to retain and anchor the leads in place.
Claim 11
Dependent Claim
17 words
The electrical circuit device of claim 7, wherein the opposite ends of said longitudinal groove are enclosed.
Claim 12
Dependent Claim
61 words
The electrical circuit device of claim 7, wherein said first planar surface is rectangular in shape to define a pair of opposing longitudinal edges, said termination surface intersects said first planar surface along at least one of said longitudinal edges and said termination coating areas each extends onto said first planar surface to make electrical contact with said electrical circuit components.
References Cited (Backward Citations)
US3346774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |