US4480148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical device package
Assignee: GEC-MARONI Ltd
•
Filing: 1982-05-11
•
Granted: 1984-10-30
•
Expires: 2002-05-11
Abstract
Abstract An electrical device package comprising an open ended container and an enclosure defining a cavity in which an electrical device is contained. The enclosure is positioned in the container and is sealed therein by a filling of moulding material. The package is particularly suitable for containing surface acoustic wave devices e.g. filters where contact with the moulding material during and after packaging must be avoided.
Inventors
- 👤 Steven K. Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:14
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/10; H10W74/111; H10W74/124; H05; H05K; H05K5/00; H05K5/0091; H05K5/0095; H10W76/00; H10W76/40; H10W76/42; H10W76/47
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
93 words
An electrical device package, comprising an open ended container and an enclosure defining a cavity, which enclosure is formed by a housing that is open on one side and has a closure therefore, an electrical device mounted on a substrate positioned within the cavity and sealed therein by the closure, which enclosure is positioned in the container and is sealed therein by a filling of moulding material wherein the substrate is a lead frame providing electrical leads extending from the open end of the container to provide external electrical connections to the device.
Claim 2
Dependent Claim
93 words
An electrical device package, comprising an open ended container and an enclosure defining a cavity, which enclosure is formed by a housing that is open on one side and has a closure therefore, an electrical device mounted on a substrate positioned within the cavity and sealed therein by the closure, which enclosure is positioned in the container and is sealed therein by a filling of moulding material wherein the substrate is a lead frame providing electrical leads extending from the open end of the container to provide external electrical connections to the device.
Claim 3
Dependent Claim
19 words
An electrical device package as claimed in claim 1 in which the device is a surface acoustic wave device.
Claim 4
Dependent Claim
18 words
An electrical device package as claimed in claim 1 in which the closure is formed from plastic material.
Claim 5
Dependent Claim
21 words
An electrical device package as claimed in claim 3 in which the closure is provided by a strip of thermoplastic material.
Claim 6
Dependent Claim
20 words
An electrical device package as claimed in claim 4 in which the strip of thermoplastics material is a polyester tape.
Claim 7
Dependent Claim
17 words
An electrical device package as claimed in claim 4, wherein the strip has a self adhesive coating.
Claim 8
Dependent Claim
50 words
An electrical device package as claimed in claim 4, wherein the strip has on one face a layer of thermoplastics material which melts at a lower temperature than the rest of the strip and adhesion between strip and housing is effected as a result of heating at the interface therebetween.
Claim 9
Dependent Claim
18 words
An electrical device package as claimed in claim 1 in which the housing is formed from plastics material.
Claim 10
Dependent Claim
18 words
An electrical device package as claimed in claim 8 in which the closure is formed from polyester material.
Claim 11
Dependent Claim
29 words
An electrical device package as claimed in claim 1 in which the container is provided with means to constrict an internal dimension to provide locating means for the enclosure.
Claim 12
Dependent Claim
38 words
An electrical device package as claimed in claim 10 in which the means to constrict an internal dimension of the container is formed by an indentation in each wall of an opposing pair of walls of the container.
Claim 13
Dependent Claim
71 words
An electrical device package as claimed in claim 11, in which the container is formed from metal, the indentations are oppositely disposed and extend for substantially the full depth of the container walls to divide the container into two parts, one containing input circuits and the other containing output circuits of the electrical device to electrically screen the input and output circuits one from another when the container is electrically grounded.
Claim 14
Dependent Claim
33 words
An electrical device package as claimed in claim 12, in which the container is electrically connected to an electrical lead extending from the open end of the container for electrically grounding the container.
Claim 15
Dependent Claim
18 words
An electrical device package as claimed in claim 1 in which the container is formed from plastics material.
Claim 16
Dependent Claim
16 words
An electrical device package as claimed in claim 14 in which the plastics material is polyester.
Claim 17
Dependent Claim
17 words
An electrical device package as claimed in claim 1 in which the container is formed from metal.
Claim 18
Dependent Claim
15 words
An electrical device package as claimed in claim 16 in which the metal is aluminium.
Claim 19
Dependent Claim
17 words
An electrical device package as claimed in claim 1 in which the moulding material is epoxy material.
Claim 20
Dependent Claim
20 words
An electrical device package as claimed in claim 18 in which the epoxy material is a casting grade epoxy material.
References Cited (Backward Citations)
US3469684A
Cited
US3469148A
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US3484536A
Cited
US4105861A
Cited
US4291285A
Cited
US4296347A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |