US3689804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid circuit device
Assignee: Denso Corp
•
Filing: 1971-09-30
•
Granted: 1972-09-05
•
Expires: 1991-09-30
Abstract
Abstract A hybrid circuit device including circuit elements connected on a printed circuit plate mounted on a radiator is provided with flexible insulating material packed between the elements thereof. Lead terminals are secured to the printed circuit plate and the printed circuit plate is fixed to the radiator with the intervention of flexible insulating material with a rubber-like insulator mounted on the marginal portion of the circuit plate by use of a metal frame. Flexible insulating material is covered on the circuit and the circuit is enclosed by enclosure resin.
Inventors
- 👤 Masaru Ishihama
- 👤 Yukio Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:02
CPC Classifications
H; H10; H10W; H10W90/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A hybrid circuit device comprising a radiating plate, a printed circuit plate mounted on the radiating plate, a plurality of circuit elements electrically connected on the printed circuit plate to form a hybrid circuit, lead terminals secured to the printed circuit plate for serving as electric terminals of the hybrid circuit, rubber-like insulating material enclosing the periphery of the printed circuit plate, a metal frame having an opening at a position opposed to the printed circuit plate, said metal frame being fixed to the marginal portion of the radiating plate, said rubber-like insulating material being pressed toward the printed circuit plate by the metal frame, flexible insulating material covered on the printed circuit plate, and enclosure resin enclosing at least the flexible insulating material.
Claim 2
Dependent Claim
124 words
A hybrid circuit device comprising a radiating plate, a printed circuit plate mounted on the radiating plate, a plurality of circuit elements electrically connected on the printed circuit plate to form a hybrid circuit, lead terminals secured to the printed circuit plate for serving as electric terminals of the hybrid circuit, rubber-like insulating material enclosing the periphery of the printed circuit plate, a metal frame having an opening at a position opposed to the printed circuit plate, said metal frame being fixed to the marginal portion of the radiating plate, said rubber-like insulating material being pressed toward the printed circuit plate by the metal frame, flexible insulating material covered on the printed circuit plate, and enclosure resin enclosing at least the flexible insulating material.
Claim 3
Dependent Claim
23 words
A hybrid circuit device as defined in claim 1 wherein said lead terminals are extended out of holes provided in the radiating plate.
Claim 4
Dependent Claim
25 words
A hybrid circuit device as defined in claim 1 wherein said lead terminals are guided out through the flexible insulating material and the enclosure resin.
Claim 5
Dependent Claim
25 words
A hybrid circuit device as defined in claim 1 wherein a flexible insulating layer is inserted between the radiating plate and the printed circuit plate.
Claim 6
Dependent Claim
22 words
A hybrid circuit device as defined in claim 1 wherein flexible material is inserted between the radiating plate and the metal frame.
Claim 7
Dependent Claim
43 words
A hybrid circuit device as defined in claim 1 further comprising an enclosure resin casing which encloses the hybrid circuit device as defined in claim 1, said casing being filled with enclosure resin in the space between the casing and the circuit device.
Claim 8
Dependent Claim
24 words
A hybrid circuit device as defined in claim 6 wherein said radiating plate is bent at the opposite ends thereof to form fixing portions.
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) | 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 |