Патент USA US2403457код для вставки
July 9, 1946- TERMINAL STRIP J. E.FOR INDUGTlVE DEVICES ?,4@3,457 Filed Feb, "r, 194?: 11 F76. /. FIG. 2 , Maw/Wm“ ' J I f. RANGES 8V ATTORNEY I w Patented July 9.9 ‘294$ ' > UNITED “STATES 2,403.45‘? TERMINAL STRIP FOR WDUCTIVE DEVICES ‘ John E. Ranges,_East Rutherford, N. 3., ‘designer to Bell Telephone Laboratories, Incorporated, New York, N. Yl, a corporation of New York Application February '2, 1942, Serial No. 429,936 v; 2Claims.- (c1. 175<--21) 1 ‘ll This invention relates to inductive devices and more particularly to a terminal strip for such two-pronged prong 6 passes staple through of conducting a hole inmaterial. the msuiatiug strip as shown in the dots-dash lines and is then An object of this‘invention is an inductive de bent over to contact with the strip. The other vice having a single piece of insulating material prong 6’ ?ts into a notch provided in the end of as a terminal strip or mounting plate which is the insulating strip as shown in Fig. 3. ?rmly associated with the device without the use After coil l is wound the insulating terminal of screws, rivets, etc. _ strip 2 is wrapped around the periphery and the Another object of the invention is a single strip slits ?tted as shown in Fig. 1, thereby leaving the terminal strip for an inductive device in which 10 ends of the strip free. If desired, a suitable ce both ends'of the strip are exposed for attachment ment or other adhesive may be applied to that of terminals'thereon. ~ surface of strip 2 which comes in contact with To accomplish these objects and others which the coil. However, such adhesive is not required. ' ' will appear hereinafter, this invention comprises The ends ‘I of the coil winding or windings are a coil of one or a plurality of windings about the 15 then brought out and together with vleads 8 are periphery of which is wrapped a stripv or insulat . ‘given a few turns around portions 6' of the ter-‘ devices. ' v p - ing material, The insulating material strip is of ' minals to which they are then soldered. The a length greater than the periphery of the device so that the strip would normally overlap. Near the point of overlapping are transverse slits ex tending approximately half way across the strip 20 from‘ opposite edges thereof. The ends of the~ strip are interlocked by inserting the unslit por tion of each end of the strip into the slit in the other end. . - Y The invention will be better understood from ‘ the following description or one embodiment of ' prong 6' is then bent over.‘ ‘ _ In wrapping the coil winding ends around por tions 6’ or‘ the terminals, the coil ends are pulled su?iclently tight m make the ends of the strip approach as closely as possible to the underlying " portions of the strip. In other words, the coil winding ends 1 form anchors for the ends of the 25 strip. For this reason the adhesive mentioned above is not essential but as stated may be used. The coil and terminal strip are thenvplaced in the bottom half 9 of a two-part insulating mate rial eontainer. The container may be of still.’ Fig. 1 is a perspective view of a toroidal coil to '30 paper, cardboard similar insulation material. which the invention has been applied with the The leads 8 are closely about the strip two parts of the enclosing case ‘separated from 2 and pass out of container through opening each other and from the coil; . the invention together with the attached drawing‘ ' - in which: ill in the bottom half. The upper half oi the ’ Fig. 2 is a view of the terminal strip before container is also provided with an opening i2 being applied to the coil; and ‘ 35 through which the leads pass when the upper Fig. 3 is an enlarged view of a portion of one portion is put in place. The upper hall’ ll 01' the end of the terminal strip and illustrates the man her in which the terminals are applied to the strip. In Fig. 1, there is shown a toroidal type coil I container is ?tted over the bottom half and is cemented thereto. - After the top of the container is inyplace, the preferably formed by winding enamel insulated 40 complete assembly is vacuum impregnated with a wire on a toroidal core of magnetic material. The suitable ?lling and moisture repellent material; magnetic material may be of molybdenum perm The invention has been described as applied to alloy dust of 400-mesh ?neness compressed into a toroidal coil but it is obvious that it is equally the desired shape in the well-known manner. applicable to a solenoid. It is also obvious that Around the periphery of coil I is a strip of' 45 the terminal strip need not embrace the entire insulating material 2. This strip may be of-stiii external surface of the winding or coll but that paper, cardboard or similar material and is longer may be placed at either or both ends of a wind than the periphery of the coil so that the ends or any place in between the ends. It is, there of the strip would normally overlap. At the point fore, seen. that the invention may be carried out where the ends of the strip would normally over so in other specific ways than those herein set forth lap, slits 3 and 4 are provided as shown more par without departing from the spirit and essential ticularly in Fig. 2. i characteristics of the invention and the present At each end of the strip, two terminals 5 area} embodiment is, therefore, to be consideredv in all provided. As shown more particularly in Fig. 3, respects as illustrative and not restrictive and all each terminal comprises a U-shaped piece or a so changes coming within the meaning and equiva 2,403,415? lency range of the appended claims are intended to be embraeed therein. What is claimed is: 1. An inductive device comprising a coil oi’ wire, a strip of insulating material around tl'ie‘periph ery of said coil, said strip having transverse slits at an overlapping point to permit interlocking oi’ the strip to hold it in position on said coil and-‘to expose both ends of the strip, terminal leads, and a conducting terminal element attached to each of the exposed ends, the ends of said coil of wire and the terminal leads each being electrically connected to respectively associated terminal elements. \ 4 3 ' t 2. In an electrically inductive apparatus, an ’ electrically conductive winding, a ?at band of insulating material adapted to pass completely around the periphery of the winding and to have overlapping end portions, said band having trans verse slits at opposite sides at points which per rnit interlocking oi‘ the band with itself whereby the band is held in position on said winding with both its end portions exposed and tree, terminal leads for said apparatus and electrically conduc tive terminal elements at‘ each end 0! the band, said elements extending through the band and ‘around the end margins 01 its free ends and an electrical connection from each terminal element tola point in the conductive winding and to a terminal lead. - JOHN E. RANGES.