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US3862350A Expired / Lapsed US ⏱️ 0.0 years remaining

Radio frequency interference shielding

Assignee: Singer Co
•
Filing: 1973-10-03
•
Granted: 1975-01-21
•
Expires: 1993-10-03
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Abstract

Abstract This disclosure illustrates and describes an apparatus and a method for preventing the interference by strong electrical fields with the operation of electronic equipment. There are many situations where a substantial amount of electronic equipment is located in an area which is subjected to strong radiation fields. One example of such a situation is the installation of an aircraft simulator at an air base which utilizes high powered radio transmitters and radar transmission equipment. Interference in the operation of the electronic equipment by the radiant fields may cause improper operation of digital computers, damaging transient effects and complete disruption of intercomponent communication. This invention is used where such equipment is mounted upon a raised floor and in which the cables interconnecting the electronic components pass beneath the raised floor. In accordance with this invention the raised floor is constructed upon a sheet of highly conductive material which is then folded up around the sides and the ends of the raised floor and electrically grounded thereto so that the floor, the sheet of conductive material, and the cabinets containing the electronic gear thereon are connected together and completely surround the electrical equipment and the connecting cables.

Inventors

  • 👤 Bernard S Milosavich

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 10:34
CPC Classifications
H; H05; H05K; H05K9/00; Y; Y10; Y10S; Y10S174/00; Y10S174/35

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 84 words
Apparatus providing electromagnetic interference protection to electrical equipment, said apparatus comprising an electrically conductive supporting platform which supports said electrical equipment thereon, means holding said supporting platform in spaced relation from a base, means interconnecting separate components of said electrical equipment, said interconnecting means passing between said base and said supporting platform, a sheet of conductive material interposed between said base and said supporting platform completely surrounding the space therebetween, and means electrically connecting said sheet, said supporting platform and said electrical equipment together.
Claim 2
Dependent Claim 84 words
Apparatus providing electromagnetic interference protection to electrical equipment, said apparatus comprising an electrically conductive supporting platform which supports said electrical equipment thereon, means holding said supporting platform in spaced relation from a base, means interconnecting separate components of said electrical equipment, said interconnecting means passing between said base and said supporting platform, a sheet of conductive material interposed between said base and said supporting platform completely surrounding the space therebetween, and means electrically connecting said sheet, said supporting platform and said electrical equipment together.
Claim 3
Dependent Claim 108 words
In an electrical system where electrical equipment is mounted in electrically conductive cabinets which are supported on a raised conducting platform and in which system electrical conductors connecting the cabinets together pass under said platform, apparatus for protecting said electrical equipment from electromagnetic interference, said apparatus comprising a sheet of flexible electrically conductive material arranged below said conductors and said platform, said sheet being folded along to enclose the space below said platform and form a conductive enclosure with the platform as the top and containing said conductors, and means for electrically connecting said sheet to said platform to provide an electrically shielded enclosure for said electrical conductors.
Claim 4
Dependent Claim 108 words
In an electrical system where electrical equipment is mounted in electrically conductive cabinets which are supported on a raised conducting platform and in which system electrical conductors connecting the cabinets together pass under said platform, apparatus for protecting said electrical equipment from electromagnetic interference, said apparatus comprising a sheet of flexible electrically conductive material arranged below said conductors and said platform, said sheet being folded along to enclose the space below said platform and form a conductive enclosure with the platform as the top and containing said conductors, and means for electrically connecting said sheet to said platform to provide an electrically shielded enclosure for said electrical conductors.
Claim 5
Dependent Claim 31 words
The system defined in claim 2 further including shielded means penetrating said sheet for providing electrical communication with the interior of said space surrounded by said sheet and said raised platform.
Claim 6
Dependent Claim 36 words
The system defined in claim 3 wherein said means penetrating said sheet includes a terminal panel which includes means for electrically connecting said terminal panel to said sheet to insure the integrity of said shielding effect.
Claim 7
Dependent Claim 37 words
The system in claim 3 wherein said means for electrically connecting said sheet to said raised platform includes conductive gasket material interposed between a conductive surface of said sheet and a conductive surface of said raised platform.

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) 1978-01-20 1978-07-22 1979-01-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-01-20 1982-07-22 1983-01-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-01-20 1986-07-22 1987-01-21 $7700.00 Window Closed / Lapsed

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