US3596270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave absorbing wall element
Assignee: Individual
•
Filing: 1969-09-24
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Granted: 1971-07-27
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Expires: 1989-09-24
Abstract
Abstract A microwave absorbing wall element to be used, for example, in an anechoic chamber, which element comprising a polygonal ferrite material plate formed to have complemental stepped edges in section at its periphery, and a conductive plate lined on the back surface of the ferrite material plate. As the elements are butted together with each other, the stepped edges of adjacent butted elements will engage with each other so as to block joint slits along each periphery.
Inventors
- 👤 Sakae Fukui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:57
CPC Classifications
H; H01; H01Q; H01Q17/00; H01Q17/008
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
In a microwave absorbing wall structure, the combination comprising an assembly of flat polygonal plates of like configuration arranged in side-by-side relation, each said plate consisting of a front section and a rear section, and an electrically conductive plate adhered to said rear section, and the side edges of said front and rear sections of each plate being offset from one another thereby to establish inwardly and outwardly stepped portions which interfit with the complementary stepped portions of the other plates adjacent thereto and effect an overlap of all joints formed between the abutting side edges of the front sections of said plates in relation to the joints formed between the abutting side edges of the rear sections of said plates.
Claim 2
Dependent Claim
121 words
In a microwave absorbing wall structure, the combination comprising an assembly of flat polygonal plates of like configuration arranged in side-by-side relation, each said plate consisting of a front section and a rear section, and an electrically conductive plate adhered to said rear section, and the side edges of said front and rear sections of each plate being offset from one another thereby to establish inwardly and outwardly stepped portions which interfit with the complementary stepped portions of the other plates adjacent thereto and effect an overlap of all joints formed between the abutting side edges of the front sections of said plates in relation to the joints formed between the abutting side edges of the rear sections of said plates.
Claim 3
Dependent Claim
38 words
A microwave absorbing wall structure as defined in claim 1 wherein said plates have a regular hexagonal configuration and three adjacent sides of the front section thereof are offset from three adjacent sides of the rear section thereof.
Claim 4
Dependent Claim
37 words
A microwave absorbing wall structure as defined in claim 1 wherein said plates have a square configuration and two aDjacent sides of the front section thereof are offset from two adjacent sides of the rear section thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |