GB574401A - Improvement in electrical apparatus adapted to operate at very high frequencies - Google Patents

Improvement in electrical apparatus adapted to operate at very high frequencies

Info

Publication number
GB574401A
GB574401A GB1364243A GB1364243A GB574401A GB 574401 A GB574401 A GB 574401A GB 1364243 A GB1364243 A GB 1364243A GB 1364243 A GB1364243 A GB 1364243A GB 574401 A GB574401 A GB 574401A
Authority
GB
United Kingdom
Prior art keywords
oscillations
metal
aperture
enclosure
high frequencies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1364243A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1364243A priority Critical patent/GB574401A/en
Publication of GB574401A publication Critical patent/GB574401A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0015—Gaskets or seals

Abstract

574,401. Wireless apparatus. GENERAL ELECTRIC CO., Ltd., JAMES, E. G., and' LINDELL, A. O. E. Aug. 20, 1943, No. 13642. [Class 40 (v)] In electrical apparatus employing very high frequencies, of the kind embodying a medium that prevents transmission of oscillations through apertures in an enclosure by attenunating oscillations passing through it, the medium is metal wool. Fig. 1 shows an arrangement for preventing the escape of oscillations from a metal enclosure 1 at an aperture 3 formed for the passage of a shaft 2. The aperture is surrounded by a metal tube 4 packed with steel wool which serves to attenuate any oscillations which would pass through the aperture 3. In an alternative arrangement, Fig. 2 (not shown), a lid of a metal box is provided with depending flanges for engaging the top of the box. The space between the flanges is filled with metal wool. The invention can also be used where a lead passes through the enclosure.
GB1364243A 1943-08-20 1943-08-20 Improvement in electrical apparatus adapted to operate at very high frequencies Expired GB574401A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1364243A GB574401A (en) 1943-08-20 1943-08-20 Improvement in electrical apparatus adapted to operate at very high frequencies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1364243A GB574401A (en) 1943-08-20 1943-08-20 Improvement in electrical apparatus adapted to operate at very high frequencies

Publications (1)

Publication Number Publication Date
GB574401A true GB574401A (en) 1946-01-03

Family

ID=10026747

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1364243A Expired GB574401A (en) 1943-08-20 1943-08-20 Improvement in electrical apparatus adapted to operate at very high frequencies

Country Status (1)

Country Link
GB (1) GB574401A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267729B (en) * 1961-11-29 1968-05-09 Technical Wire Products Inc Electrical shielding
FR2588718A1 (en) * 1985-10-11 1987-04-17 Thomson Csf ELECTROMAGNETIC SEAL FOR FARADAY CAGE TYPE ENCLOSURES
GB2194682A (en) * 1986-08-30 1988-03-09 Marconi Co Ltd Shielding against electromagnetic radiation
US4997993A (en) * 1990-01-17 1991-03-05 The Boeing Company Method and apparatus for sealing movable panel and maintaining low signature integrity

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267729B (en) * 1961-11-29 1968-05-09 Technical Wire Products Inc Electrical shielding
FR2588718A1 (en) * 1985-10-11 1987-04-17 Thomson Csf ELECTROMAGNETIC SEAL FOR FARADAY CAGE TYPE ENCLOSURES
EP0223650A1 (en) * 1985-10-11 1987-05-27 Thomson-Csf Electromagnetic sealing gasket for a Faraday cage-like enclosure
GB2194682A (en) * 1986-08-30 1988-03-09 Marconi Co Ltd Shielding against electromagnetic radiation
GB2194682B (en) * 1986-08-30 1990-05-09 Marconi Co Ltd A container designed to provide shielding against electromagnetic radiation
US4997993A (en) * 1990-01-17 1991-03-05 The Boeing Company Method and apparatus for sealing movable panel and maintaining low signature integrity

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