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Publication numberUS2993188 A
Publication typeGrant
Publication dateJul 18, 1961
Filing dateNov 6, 1958
Priority dateDec 2, 1957
Also published asDE1118853B
Publication numberUS 2993188 A, US 2993188A, US-A-2993188, US2993188 A, US2993188A
InventorsAnderson Sven Gustav
Original AssigneeEricsson Telefon Ab L M
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Terminal for printed circuit card
US 2993188 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

July 18, 1961 s. G. ANDERSON 2,993,188

TERMINAL FOR PRINTED CIRCUIT CARD Filed Nov. 6, 195a Fig.2 Fig. 7 Fig. 3

g 3 7\ 2 2 III/S firm/aways 2,993,188 TERMINAL FOR PRINTED CIRCUIT (SARI) Sven Gustav Anderson, Stockholm, Sweden, assignor to Telefonaktiebolaget L M Ericsson, Stockholm, Sweden, a corporation of Sweden Filed Nov. 6, 1958, Ser. No. 772,249 Claims priority, application Sweden, Dec. 2, 1957 1 Claim. (Cl. 339-17) The present invention refers to a contact plug device specially for printed circuits that are made on cards or plates of insulating material and designed for plugging into a fixed contact device.

At a known device the foil outlets of the printed circuits are designed as contacts. However, the foil is thin and easily torn and a convenient surface finish of the contacts such as gold or silver plating is difficult to carry out. At another known device contact metal strips are used, that are fastened to the plate by means of nails or rivets, but this device is relatively laborious to manufacture.

In the contact plug of the invention these disadvantages are eliminated and this is achieved principally by means of a metal strip that is placed round the edge of the plate and fixed to the same by means of a tongue provided at one end of the strip, which tongue passes through a hole in the plate and engages with the other end of the strip.

The invention will be further described by means of an embodiment with reference to the attached drawing, that shows the contact plug together with the contact strip used. FIG. 1 shows a side view and FIG. 2 an end view of the contact strip, while FIG. 3 shows a plan view of the contact plug and FIG. 4 shows a cross sectional view of the same. FIGS. 5 and 6 show alternative forms of the contact strip.

At 1 is indicated a contact metal strip that is bent principally in a U-form. The strip is provided with a hole 2 at the end of one branch and with a tongue 3 at the other end. The width of the tongue is somewhat smaller than the diameter of the hole, so that the tongue can be put through the hole.

On a plate 4 of insulating material a number of foil outlets 5 from printed circuits are arranged. Along one edge of the plate, that is intended to support the contact strips, the plate is provided with recesses for guiding of the contact strips. The widths of the recesses are equal to that of the strips, and their depths correspond approximately to the thickness of the strips. For fastening of the contact strips the plate is furthermore provided with holes 7 for the tongues of the contact strip. When mounting a strip the tongue is put through the hole '7 ice and through the hole 2 of the proper strip and bent (FIGURE 4).

The foil outlets 5 from the printed circuits are placed in such a manner that when mounting the strips they will be situated beneath said strips, whereby each strip makes contact with an underlying foil outlet. Soldering of the bent part of the tongue 3 to the adjacent part of the contact strip and the underlying foil outlet 5 can be made together with soldering of all the connections of the plate in the known way by means of so-called dip or series soldering in a soldering machine, whereby the contact surfaces of the strips are protected by being covered for instant with tape or a convenient sheet-metal.

The contact strip according to FIG. 5 is made of resilient material and with curved branches. Such a contact strip will work as a banana contact and the corresponding contacts of the fixed contact device may be designed as not resilient contacts. The contact strip can also be provided with a soldering tag '8 as shown in FIGURE 6.

I claim:

In a printed electrical circuit having an electrical conductor mounted upon one side of a supported insulated base plate having perforations extending through said conductor and said base plate adjacent to a marginal edge of said base plate, a terminal for said electrical conductor comprising an elongated strip having a transverse bend line defining one end of a pair of legs bendable toward each other about said bend line, the opposite end of one of said legs adapted to overlie said conductor and having an aperture adapted to be aligned with one of said perforations, the opposite end of said strip adapted to overlie the opposite side of said base plate from said conductor and having a tongue of reduced width receivable through said one perforation for insertion into said aperture of said one leg of said terminal, and said tongue being bendable in a direction away from said transverse bend line into overlying parallel relationship with said opposite end of said one leg of said terminal.

References Cited in the file of this patent UNITED STATES PATENTS 1,221,713 Fahnestock Apr. 3, 1917 1,876,383 Anderson Sept. 6, 1932 2,445,587 Sims July 20, 1948 2,566,805 Lavander Sept. 4, 1951 OTHER REFERENCES Winsker et al.: Electronic Design, Sept. 1S, 1957. pages 154, 155.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1221713 *Oct 4, 1911Apr 3, 1917Ernest Benjamin FahnestockSpring fastening device.
US1876383 *May 6, 1931Sep 6, 1932 Slide
US2445587 *May 10, 1945Jul 20, 1948Gen ElectricElectric terminal and coil
US2566805 *Dec 4, 1948Sep 4, 1951Henry PosnerMultiple connector
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3069599 *Sep 28, 1960Dec 18, 1962Siemens AgPlug-in contact device for plates carrying circuit components
US3156514 *Nov 21, 1961Nov 10, 1964Hi Shear CorpConnector
US3200360 *Jun 20, 1962Aug 10, 1965United Carr IncContact-camming printed circuit board
US3201744 *Feb 15, 1961Aug 17, 1965IttContact terminal for an electrical conductor member
US3238749 *Jun 30, 1961Mar 8, 1966Patent Treuband Ges Fur ElectrSeries flash device and method of manufacture thereof
US3396461 *Nov 18, 1964Aug 13, 1968Engelhard Ind IncPrinted circuit board and method of manufacture thereof
US3536821 *Dec 16, 1968Oct 27, 1970Beckman Instruments IncTerminal construction for electrical circuit element
US3641475 *Dec 18, 1969Feb 8, 1972Bell Telephone Labor IncIntercept connector for making alternative bridging connections having improved contact clip construction
US3969010 *May 17, 1974Jul 13, 1976E. I. Du Pont De Nemours And CompanySubstrate with improved contact terminals
US4124266 *Jun 15, 1977Nov 7, 1978Pressac LimitedElectrical connecting means
US4410232 *Jan 4, 1982Oct 18, 1983Continental-Wirt Electronics Corp.Terminal staking article and process
US20130219751 *Feb 22, 2013Aug 29, 2013Kimberly Ann CatlettShoe system with interchangeable uppers
DE3828904A1 *Aug 23, 1988Mar 1, 1990Krone AgPlug connector for printed circuit boards
EP1953871A2 *Nov 14, 2007Aug 6, 2008Siemens AG ÖsterreichArrangement of one circuit board onto a second circuit board
EP1953871A3 *Nov 14, 2007Sep 23, 2009Siemens AG ÖsterreichArrangement of one circuit board onto a second circuit board
WO2016173808A1 *Apr 4, 2016Nov 3, 2016Phoenix Contact Gmbh & Co. KgConnector arrangement for printed circuit boards
U.S. Classification439/79, 24/265.00A
International ClassificationH01R13/40, H05K3/32, H01R12/18, A44B99/00
Cooperative ClassificationH01R12/728, H01R13/40
European ClassificationH01R13/40, H01R23/70K3