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Publication numberUS3366918 A
Publication typeGrant
Publication dateJan 30, 1968
Filing dateNov 23, 1966
Priority dateNov 23, 1966
Publication numberUS 3366918 A, US 3366918A, US-A-3366918, US3366918 A, US3366918A
InventorsFrederick W Johnson, Leslie W Templeton
Original AssigneeCollins Radio Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Shell-to-shell-to-shelf rfi seal spring
US 3366918 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Jan. 30, 1968 F. w. JOHNSON ETAL 3,365,918

SHELLTO-SHELL-TOSHELF RFI SEAL SPRING 2 Sheets-Sheet 1 Filed Nov. 25, 1966 FIG 3 INV/iM/LL QS FREDERICK w. JOHNSON LESLIE w TEMPLETON I I ATTORNEY United States Patent Oflfice 3,366,918 Patented Jan. 30, 1968 ABSTRACT OF THE DISCLOSURE This invention consists of an electrical seal that can be mounted between a pair of members so as to also engage a mounting plate and provide electrical contact between the three members, thus providing electrical continuity and shielding from radio frequency energy.

This invention relates in general to a frequency interference seal spring and, in particular, to a flexible strip that can be mounted so as to provide a radio frequency shield between a first member and two other members.

In electrical equipments it is often desirable to mount an electrical member such as a component so that it makes electrical contact with two other members. For example, a component which has a male and female shell might be mounted in an opening in a shelf.

It is an object of the present invention, therefore, to provide a radio frequency interference seal capable of electrically connecting a male and female connector shell with a shelf so that they have electrical continuity and radio frequency interference does not occur.

Another object of this invention is to provide a radio frequency seal between a first member and two other members which may be occasionally disengaged.

A feature of this invention is found in the provision for a spring seal member with complex projections bent along its edges so as to provide a radio frequency shield.

Further objects, features, and advantages of this invention will become apparent from the following description and claims when read in view of the accompanying drawings, in which:

FIGURE 1 is a perspective view of the radio frequency interference shield of this invention;

FIGURE 2 is an end view of the shield of this invention;

FIGURE 3 is a plan view of a blank from which the shield is formed and is illustrated prior to bending;

FIGURE 4 is a perspective view of the radio frequency interference shield of this invention in place while making electrical contact between a pair of shell members and a shelf; and,

FIGURE 5 is a sectional view illustrating the seal.

FIGURE 1 illustrates the seal strip designated generally as 10. It comprises a longitudinal body portion 11 which is formed with a first portion 12 at right angles to the body portion 11. The other edge 13 of the body portion 11 is formed with a first plurality of offset tabs 14 which extend backwardly along the body portion 11, but whose ends 16 terminate beyond the edge 17 of the body portion 11.

A second plurality of tabs 18 extend from the edge 13 between the tabs 14 and comprise first portions 19 which extend parallel to the sides 12 and which have second portions 21 which form an acute angle with the portions 19 and extend backwardly toward the body portion 11. The ends 22 of the portion 21 extend beyond the base 11.

The ends 16 and 22 of tabs 14 and 21 are truncated as shown.

FIGURE 2 is an end view of the interference shield of this invention and FIGURE 3 is a plan view of a blank of electrical conducting spring material from which the seal is formed.

A particular shield according to this invention was constructed with the following dimensions: (see FIGURE Material beryllium copper, annealed 0.003 inch thick. a-0.068 inch b0.53 inch c-0.044 inch d-0.061 inch e-0.089 inch f0.008 inch L --0.00327 inchl60 degrees L 0.O084 inch-l45 degrees L 0.O0267 inch-90 degrees L -0.003 inch-405 degrees The dimensions of a blank according to FIGURE 3 were as follows:

g0.020 inch h0.125 inch i0.020 inch j-0.02O inch m--O.2l4 inch n0.266 inch y0.250 inch The blank of FIGURE 3 is formed into the structure of FIGURE 1 and 2 by bending dies in a well known manner.

In use, the shield 10 is placed on either side of a male connector socket 26 which has ledges 27 formed on its edges. The radio frequency interference seal spring 10 is inserted onto the ledge 27 such that sides 12 and 19 engage opposite sides of the ledge and the back 11 engages the edge of the ledge. The male socket 26 is mounted in a plate 25 formed with an opening 30. Bars and are attached to plate 25 and the male socket 26 by suitable nuts and bolts as shown.

The tabs 14 extend outwardly from the ledge 27 when the male socket 26 is out of engagement with the plate 25, but when the socket 26 is in position in plate 25, the tabs 14 engage the edges 23 of plate 25 and provide an interference shield. The male socket 26 has a projection 31 upon which a female socket 32 is received. When the female socket 32 is moved into engagement with the male socket 26, the flexible tabs 18 make electrical engagernent with the ends 33 of the female socket 32 as shown in FIGURE 5. In the assembled position the seal of this invention electrically connects the plate 25, the male socket 26 and the female socket 32. It is to be realized that although sockets 26 and 32 have been described which may comprise electrical plugs, that any type of members may be connected with the shield of this invention.

It is seen that this invention provides a radio frequency interference seal spring capable of electrically connecting a male and female connector and a plate. The flange 27 may be 0.04" thick. The spring, once in place on the flange 27, remains as an integral part of the male connector 26.

It is seen that this invention provides a radio frequency interference seal spring and although it has been described with respect to a particular embodiment thereof, it is not to be so limited, as changes and modifications may be made therein which are within the spirit and scope of the invention as defined by the appended claims.

We claim:

1. An interference shield for preventing radiation from a male and female socket mounted in an opening in a plate, with a ledge formed about the edge of the male socket in alignment with the plate Within the opening, the shield formed having a generally U-shaped portion which is shaped to press-fit over the ledge, a first plurality of tabs extending from the shield and engageable with an edge of the opening of the plate to make electrical contact therewith, and a second plurality of tabs extending from the shield and shaped to make electrical contact with the female socket.

2. In apparatus according to claim 1 wherein the first tabs extend backwardly and outwardly from the one edge of the U-shaped portion of the shield.

3. In apparatus according to claim 1 wherein the second tabs form the one edge of the U-shaped portion of the shield.

4. In apparatus according to claim I wherein the first and second plurality of tabs extend from the same edge of the U-shaped portion and wherein the first plurality of tabs makes an angle of about ninety degrees with the second plurality of tabs.

5. In apparatus according to claim 4 wherein the first and second plurality of tabs are alternately spaced along the edge of the U-shaped portion.

6. In apparatus according to claim 4 wherein the seal is made of electrically conducting flexible material.

7. In apparatus according to claim 6 wherein the material is beryllium copper.

References @ited UNITED STATES PATENTS 2,062,256 11/1936 Del Camp 339l43 UX 2,762,990 9/1956 Kielenstyn 339-143 2,844,644 7/1958 Soule l7435 2,872,139 2/1959 Bedford 339128 UX RICHARD E. MOORE, Primary Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2062256 *Aug 3, 1935Nov 24, 1936Cinch Mfg CorpPlug and socket shield and ground connecter
US2762990 *Nov 6, 1953Sep 11, 1956Hartford Nat Bank & Trust CoContact member for disc-shaped electrode connections
US2844644 *Dec 20, 1956Jul 22, 1958Gen ElectricDetachable spring contact device
US2872139 *Oct 21, 1953Feb 3, 1959Bedford Jr William AFastening device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4115655 *Nov 18, 1976Sep 19, 1978Tektronix, Inc.Electromagnetic interference shielding device
US4386814 *Aug 17, 1981Jun 7, 1983Amp IncorporatedKit for converting a panel opening to a shielded pin receptacle
US4470657 *Apr 8, 1982Sep 11, 1984International Telephone & Telegraph CorporationCircumferential grounding and shielding spring for an electrical connector
US4475023 *Aug 24, 1982Oct 2, 1984Hitachi Heating Appliances Co., Ltd.Microwave heating apparatus with fundamental and second higher harmonic chokes
US4518209 *Jun 30, 1983May 21, 1985Welcon Connector CompanyConnector block with RF shield
US4571012 *Dec 21, 1984Feb 18, 1986Molex IncorporatedShielded electrical connector assembly
US4688868 *May 14, 1986Aug 25, 1987Honeywell Information Systems Inc.Grounding gasket for D-shell connector
US5015802 *Aug 27, 1990May 14, 1991Enlight CorporationComputer casing connector
US5052948 *Nov 19, 1990Oct 1, 1991Itt CorporationConnector ground and shield
US5064388 *Sep 18, 1990Nov 12, 1991Bull S.A.Shielding chassis for protecting an electrical circuit inside said chassis against the effects of electromagnetic radiation
US5192216 *Nov 8, 1991Mar 9, 1993The Grass Valley Group, Inc.Apparatus for grounding connectors to instrument chassis
US5204496 *Apr 1, 1992Apr 20, 1993Digital Equipment CorporationEMI shielding gasket
US5250751 *Apr 21, 1992Oct 5, 1993Kitagawa Industries Co., Ltd.Electromagnetic shielding gasket
US5814762 *Jul 25, 1996Sep 29, 1998Digital Equipment CorporationGrounding for enclosures
US6444900May 19, 1999Sep 3, 2002Fci Americas Technology, Inc.Electromagnetic interference shielding gasket
US6607308Aug 22, 2001Aug 19, 2003E20 Communications, Inc.Fiber-optic modules with shielded housing/covers having mixed finger types
US6659655Feb 12, 2001Dec 9, 2003E20 Communications, Inc.Fiber-optic modules with housing/shielding
US6874953Jul 11, 2003Apr 5, 2005Jds Uniphase CorporationMethods and apparatus for fiber-optic modules with shielded housings/covers with fingers
US7008243 *Sep 13, 2002Mar 7, 2006Krone GmbhTerminal block
US7077696 *Mar 22, 2005Jul 18, 2006Japan Aviation Electronics Industry, Ltd.Connector which can easily be mounted to an object and provided with EMI protection
US7147492Mar 6, 2006Dec 12, 2006Adc GmbhTerminal block
US7473131 *Feb 2, 2006Jan 6, 2009Tyco Electronics CorporationConnector with compliant EMI gasket
US7621780 *Nov 24, 2009General Instrument CorporationShielding device and method for electrical connectors
US7722402 *Jul 25, 2007May 25, 2010Tyco Electronics CorporationPanel interface module which provides electrical connectivity between panel and shielded jacks
US20030152331 *Dec 31, 2002Aug 14, 2003Edwin DairMethods and apparatus for fiber-optic modules with shielded housing/covers having mixed finger types
US20030152339 *Dec 31, 2002Aug 14, 2003Edwin DairMethods and apparatus for fiber-optic modules with shielded housing/covers having a front portion and a back portion
US20040037517 *Jul 11, 2003Feb 26, 2004Edwin DairMethods and apparatus for fiber-optic modules with shielded housings/covers with fingers
US20040259396 *Sep 13, 2002Dec 23, 2004Manfred MuellerTerminal block
US20050221656 *Mar 22, 2005Oct 6, 2005Japan Aviation Electronics Industry, LimitedConnector which can easily be mounted to an object and provided with EMI protection
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US20080090461 *Jul 25, 2007Apr 17, 2008Tyco Electronics CorporationInterface module
US20080188126 *Feb 6, 2008Aug 7, 2008General Instrument CorporationShielding Device and Method for Electrical Connectors
US20120257369 *Sep 29, 2011Oct 11, 2012Hon Hai Precision Industry Co., Ltd.Emi shield and electronic device using the same
CN101529665BOct 9, 2007Mar 20, 2013泰科电子公司接口模块
EP0188876A1 *Nov 12, 1985Jul 30, 1986Molex IncorporatedShielded electrical connector assembly
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Classifications
U.S. Classification439/607.28, 174/359, 439/939
International ClassificationH01R13/658
Cooperative ClassificationY10S439/939, H01R13/6596
European ClassificationH01R13/6596