Patent US3689684A successfully refreshed from Google Patents.
US3689684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead frame connector and electronic packages containing same
Assignee: EIDP Inc
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Filing: 1971-02-05
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Granted: 1972-09-05
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Expires: 1991-02-05
Abstract
Abstract This invention relates to a lead frame connector utilizing mechanical clamping features to hold the lead frame in place on a dielectric substrate. The lead frame is held onto the substrate by its clamping mechanism while a bonding operation is performed. After the bonding operation has been performed, the clamping features of the lead frame assist in keeping it rigid and in increasing the strength of the bonded joint. The lead frame can be attached to various electronic devices, such as semiconductor packages, hybrid circuits, and passive elements.
Inventors
- 👤 John J Cox Jr
- 👤 Richard G Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:33
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3405; H01; H01R; H01R12/00; H01R12/50; H01R12/51; H01R12/55; H01R12/57; H10; H10W; H10W70/00; H10W70/099; H10W70/60; H10W70/62; H10W70/66; H10W72/00; H10W72/20; H10W90/00; H10W90/701; H05K2201/00; H05K2201/10; H05K2201/10227; H05K2201/10386; H05K2201/10613; H05K2201/10742; H05K2201/10886; H05K2201/10924; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12271; Y10T428/12354
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
As an article of manufacture, a metallic lead frame having an elongated bar with a plurality of spaced leads extending laterally therefrom, each lead having a portion formed at its outer end into a clamp, said clamp having upper and lower ends for engaging the top and bottom surfaces of a substrate, the upper end of the clamp having a portion in the form of an arch with a terminal tab, each lead having a laterally offset stop tab adapted to stop the lead at a predetermined distance from a substrate, said stop tab extending from said lead and being shorter than each of the upper and lower ends of the clamp, said stop tab havings its end disposed between said upper and lower ends of the clamp.
Claim 2
Dependent Claim
128 words
As an article of manufacture, a metallic lead frame having an elongated bar with a plurality of spaced leads extending laterally therefrom, each lead having a portion formed at its outer end into a clamp, said clamp having upper and lower ends for engaging the top and bottom surfaces of a substrate, the upper end of the clamp having a portion in the form of an arch with a terminal tab, each lead having a laterally offset stop tab adapted to stop the lead at a predetermined distance from a substrate, said stop tab extending from said lead and being shorter than each of the upper and lower ends of the clamp, said stop tab havings its end disposed between said upper and lower ends of the clamp.
Claim 3
Dependent Claim
41 words
As an article of manufacture, a metallic lead frame according to claim 1 fitted onto a dielectric substrate having terminal pads thereon, at least one of the upper and lower ends of said clamp engaging said terminal pads on the substrate.
Claim 4
Dependent Claim
45 words
As an article of manufacture, a metallic lead frame according to claim 2 fitted onto a dielectric substrate, wherein the ends of said clamps of the lead frame which are in contact with said terminal paDs on said substrate are soldered to said terminal pads.
Claim 5
Dependent Claim
117 words
As an article of manufacture, a dielectric substrate having opposite surfaces and a leading edge between said opposite surfaces; said substrate having at least one terminal pad on at least one of said opposite surfaces; said substrate having a metallic clamp with upper and lower ends engaging said opposite surfaces of said substrate and being disposed on any said terminal pad; said clamp being soldered to any said terminal pad; said clamp being part of a metallic lead which lead also has a laterally offset stop tab in abutment with said leading edge of said dielectric substrate, said stop tab being shorter than and its end being disposed between said upper and lower portions of said clamp.
Claim 6
Dependent Claim
117 words
As an article of manufacture, a dielectric substrate having opposite surfaces and a leading edge between said opposite surfaces; said substrate having at least one terminal pad on at least one of said opposite surfaces; said substrate having a metallic clamp with upper and lower ends engaging said opposite surfaces of said substrate and being disposed on any said terminal pad; said clamp being soldered to any said terminal pad; said clamp being part of a metallic lead which lead also has a laterally offset stop tab in abutment with said leading edge of said dielectric substrate, said stop tab being shorter than and its end being disposed between said upper and lower portions of said clamp.
References Cited (Backward Citations)
FR1467190A
Cited
GB1178395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |