US1765443A - Shielding - Google Patents

Shielding Download PDF

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Publication number
US1765443A
US1765443A US257063A US25706328A US1765443A US 1765443 A US1765443 A US 1765443A US 257063 A US257063 A US 257063A US 25706328 A US25706328 A US 25706328A US 1765443 A US1765443 A US 1765443A
Authority
US
United States
Prior art keywords
cover
opening
flange
shielding
plates
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 - Lifetime
Application number
US257063A
Other languages
English (en)
Inventor
Peterson Harold Olaf
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.)
RCA Corp
Original Assignee
RCA Corp
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
Priority to NL25744D priority Critical patent/NL25744C/xx
Application filed by RCA Corp filed Critical RCA Corp
Priority to US257063A priority patent/US1765443A/en
Application granted granted Critical
Publication of US1765443A publication Critical patent/US1765443A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05K9/0016—Gaskets or seals having a spring contact
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings

Definitions

  • This invention relates to shielding, and more particularly to metallic shielding employed with alternating current apparatus to prevent undesired magnetic and electric coupling.
  • alternating current apparatus must beshielded, either to prevent it from radiating energy, or, in the case of sensitive apparatus, to protect it from the influence of interfering energy.
  • the latter may be completely detachable, or
  • the resilient means in the form of-a conductive flange of springy material,and I fix this flange to one of the plates.
  • Figure 2 is a View of the inside of a cover plate provided with a slotted flange
  • Figure 3 illustrates a metallic enclosure assembled with its removable cover.
  • FIG. 1 there is a metallic enclosure 2, provided with an opening bounded by the edge 4.
  • a cover plate 6 For closing the opening there is a cover plate 6, and between the plates 2 and 6 there Is provided a resilient conductlve flange 8, which is fixed on the cover plate 6 by means of a frame 10 attached to the cover plate by means of screws 12.
  • cover plate 6 is seen to be, in this case, rectangular, and provided adjacent its periphery with a flange 8,
  • the flange 8 has been provided with a number of slots 14, so that it is made up, in effect, of a plurality of independently yieldable flange portions, thereby making possible more perfect electrical contact all around the rim of the cover.
  • Figure 3 shows a complete metallic container 2 provided with a removable cover plate 6.
  • the container may enclose any alternating current apparatus which is to be shielded, whether to prevent radiation, or to insulate from reception, through either magnetic or capacitive coupling.
  • the cover 6, may be any alternating current apparatus which is to be shielded, whether to prevent radiation, or to insulate from reception, through either magnetic or capacitive coupling.
  • alternating current apparatus to be shielded, a metallic enclosure or shielding said apparatus having an opening for access thereto, a removable metallic cover for said opening and resilient conductive means situated tween the cover and enclosure adjacent the periphery of the cover for insuring good electrical contact between the cover and enclosure.
  • alternating current apparatus to be shielded
  • a metallic enclosure for shielding said apparatus having an opening for access thereto, a removable metallic cover for said opening, and a resilient conductive flange fixed to the cover adjacent its periphery for insuring good electrical contact between the cover and enclosure.
  • alternating current apparatus to be shielded a metallic enclosure for shielding apparatus having an opening for access thereto, a removable metallic cover for said opening, and a resilient conductive flange, transversely slotted to form a plurality of independently yieldable flange portions, fixed to the cover adjacent its periphery for insuring (good electrical contact between the cover an enclosure.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
US257063A 1928-02-25 1928-02-25 Shielding Expired - Lifetime US1765443A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL25744D NL25744C (de) 1928-02-25
US257063A US1765443A (en) 1928-02-25 1928-02-25 Shielding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US257063A US1765443A (en) 1928-02-25 1928-02-25 Shielding

Publications (1)

Publication Number Publication Date
US1765443A true US1765443A (en) 1930-06-24

Family

ID=22974725

Family Applications (1)

Application Number Title Priority Date Filing Date
US257063A Expired - Lifetime US1765443A (en) 1928-02-25 1928-02-25 Shielding

Country Status (2)

Country Link
US (1) US1765443A (de)
NL (1) NL25744C (de)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572157A (en) * 1947-12-31 1951-10-23 Air King Products Co Inc Combination radio-wire recorder
US2604507A (en) * 1945-08-09 1952-07-22 Bendix Aviat Corp Shielding closure means
US2722599A (en) * 1951-04-28 1955-11-01 Avco Mfg Corp Multi-element radiation shield
US3128139A (en) * 1960-06-27 1964-04-07 Hallett Mfg Company Spark plug shield
US3755612A (en) * 1972-03-06 1973-08-28 Litton Systems Inc Structural supports providing shielding against interference
US3962550A (en) * 1972-07-18 1976-06-08 Siemens Aktiengesellschaft Joint seals for electromagnetic wave shields
US4039741A (en) * 1976-02-18 1977-08-02 Rockwell International Corporation Gasket apparatus
US4056682A (en) * 1976-02-18 1977-11-01 Rockwell International Corporation Gasket apparatus
DE2931382A1 (de) * 1979-08-02 1981-02-26 Bosch Gmbh Robert Kurzschlussring-geber
WO1983001174A1 (en) * 1981-09-14 1983-03-31 Motorola Inc Radio frequency shield with force multiplier interconnection fingers for an electromagnetic gasket
US4807891A (en) * 1987-07-06 1989-02-28 The United States Of America As Represented By The Secretary Of The Air Force Electromagnetic pulse rotary seal
US4873395A (en) * 1988-11-14 1989-10-10 Compuadd Corporation Personal computer expansion slot seal and method
US5004867A (en) * 1988-11-14 1991-04-02 Compuadd Corporation Personal computer expansion slot seal and method
US5032689A (en) * 1989-08-15 1991-07-16 Halligan Brian S EMI/RFI shielding vent and method of use
US5095177A (en) * 1989-09-28 1992-03-10 Technophone Limited Rf sealed radio housing
US5164543A (en) * 1991-06-28 1992-11-17 Digital Equipment Corporation Apparatus for connecting and shielding enclosures housing electronic equipment
US5204496A (en) * 1992-04-01 1993-04-20 Digital Equipment Corporation EMI shielding gasket
US5231246A (en) * 1991-06-28 1993-07-27 Digital Equipment Corporation Apparatus for securing shielding or the like
US5262923A (en) * 1991-06-21 1993-11-16 Tandon Corporation Railing with grounding tabs for grounding and mounting computer components in a computer
US5311408A (en) * 1991-08-09 1994-05-10 Tandem Computers, Incorporated Electronic assembly with improved grounding and EMI shielding
EP1100301A1 (de) * 1999-11-11 2001-05-16 Kathrein-Werke KG Hochfrequenzdichte Schirmung
US20030152331A1 (en) * 2001-02-12 2003-08-14 Edwin Dair Methods and apparatus for fiber-optic modules with shielded housing/covers having mixed finger types
US6659655B2 (en) 2001-02-12 2003-12-09 E20 Communications, Inc. Fiber-optic modules with housing/shielding
US7078614B1 (en) 2005-02-11 2006-07-18 Laird Technologies, Inc. Shielding strips
US20060180347A1 (en) * 2005-02-11 2006-08-17 Phil Van Haaster Shielding strips
US20080047745A1 (en) * 2006-08-28 2008-02-28 David Christopher Smeltz Flexible clip-on shielding and/or grounding strips
US20080317265A1 (en) * 2008-02-05 2008-12-25 Bouza Ii Jose M Anti-eavesdropping device

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604507A (en) * 1945-08-09 1952-07-22 Bendix Aviat Corp Shielding closure means
US2572157A (en) * 1947-12-31 1951-10-23 Air King Products Co Inc Combination radio-wire recorder
US2722599A (en) * 1951-04-28 1955-11-01 Avco Mfg Corp Multi-element radiation shield
US3128139A (en) * 1960-06-27 1964-04-07 Hallett Mfg Company Spark plug shield
US3755612A (en) * 1972-03-06 1973-08-28 Litton Systems Inc Structural supports providing shielding against interference
US3962550A (en) * 1972-07-18 1976-06-08 Siemens Aktiengesellschaft Joint seals for electromagnetic wave shields
US4039741A (en) * 1976-02-18 1977-08-02 Rockwell International Corporation Gasket apparatus
US4056682A (en) * 1976-02-18 1977-11-01 Rockwell International Corporation Gasket apparatus
DE2931382A1 (de) * 1979-08-02 1981-02-26 Bosch Gmbh Robert Kurzschlussring-geber
WO1983001174A1 (en) * 1981-09-14 1983-03-31 Motorola Inc Radio frequency shield with force multiplier interconnection fingers for an electromagnetic gasket
US4384165A (en) * 1981-09-14 1983-05-17 Motorola, Inc. Radio frequency shield with force multiplier interconnection fingers for an electromagnetic gasket
US4807891A (en) * 1987-07-06 1989-02-28 The United States Of America As Represented By The Secretary Of The Air Force Electromagnetic pulse rotary seal
US4873395A (en) * 1988-11-14 1989-10-10 Compuadd Corporation Personal computer expansion slot seal and method
US5004867A (en) * 1988-11-14 1991-04-02 Compuadd Corporation Personal computer expansion slot seal and method
US5032689A (en) * 1989-08-15 1991-07-16 Halligan Brian S EMI/RFI shielding vent and method of use
US5095177A (en) * 1989-09-28 1992-03-10 Technophone Limited Rf sealed radio housing
US5262923A (en) * 1991-06-21 1993-11-16 Tandon Corporation Railing with grounding tabs for grounding and mounting computer components in a computer
US5164543A (en) * 1991-06-28 1992-11-17 Digital Equipment Corporation Apparatus for connecting and shielding enclosures housing electronic equipment
US5231246A (en) * 1991-06-28 1993-07-27 Digital Equipment Corporation Apparatus for securing shielding or the like
US5311408A (en) * 1991-08-09 1994-05-10 Tandem Computers, Incorporated Electronic assembly with improved grounding and EMI shielding
US5204496A (en) * 1992-04-01 1993-04-20 Digital Equipment Corporation EMI shielding gasket
EP1100301A1 (de) * 1999-11-11 2001-05-16 Kathrein-Werke KG Hochfrequenzdichte Schirmung
US6874953B2 (en) 2001-02-12 2005-04-05 Jds Uniphase Corporation Methods and apparatus for fiber-optic modules with shielded housings/covers with fingers
US6607308B2 (en) 2001-02-12 2003-08-19 E20 Communications, Inc. Fiber-optic modules with shielded housing/covers having mixed finger types
US6659655B2 (en) 2001-02-12 2003-12-09 E20 Communications, Inc. Fiber-optic modules with housing/shielding
US20040037517A1 (en) * 2001-02-12 2004-02-26 Edwin Dair Methods and apparatus for fiber-optic modules with shielded housings/covers with fingers
US20030152331A1 (en) * 2001-02-12 2003-08-14 Edwin Dair Methods and apparatus for fiber-optic modules with shielded housing/covers having mixed finger types
US7078614B1 (en) 2005-02-11 2006-07-18 Laird Technologies, Inc. Shielding strips
US20060180347A1 (en) * 2005-02-11 2006-08-17 Phil Van Haaster Shielding strips
US7112740B2 (en) 2005-02-11 2006-09-26 Laird Technologies, Inc. Shielding strips
US20080047745A1 (en) * 2006-08-28 2008-02-28 David Christopher Smeltz Flexible clip-on shielding and/or grounding strips
US20080317265A1 (en) * 2008-02-05 2008-12-25 Bouza Ii Jose M Anti-eavesdropping device
US8203850B2 (en) 2008-02-05 2012-06-19 Vector Technologies, Llc Anti-eavesdropping device
US8665607B2 (en) 2008-02-05 2014-03-04 Vector Technologies, Llc Anti-eavesdropping device

Also Published As

Publication number Publication date
NL25744C (de)

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