Patents by Inventor Karl Zell
Karl Zell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5090912Abstract: For the electrical connection of the interconnects present at two printed circuit boards to one another, single-piece connector elements are employed that are introduced into a receptacle member that is detachably connected to the supplementary printed circuit board. The one end of each connector element is pressed directly into a plated-through hole of the base printed circuit board and the other end of the connected element is pressed directly into a plated-through hole of the supplementary printed circuit board. The production of this elastic press-in connection in the base printed circuit board or, respectively, the infrequent releasing thereof occurs with the assistance of a mounting element (screw connection) belonging to the receptacle member. The unit composed of the receptacle member and of the supplementary printed circuit board can therefore be continuously moved toward the base printed circuit board or lifted therefrom.Type: GrantFiled: August 28, 1991Date of Patent: February 25, 1992Assignee: Siemens AktiengesellschaftInventor: Karl Zell
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Patent number: 5080597Abstract: Grounding mechanism for the electrical connection of shieldings of multi-pole plugs to the ground potential layer of a printed circuit board having a plurality of perpendicularly extending contact blades. A punched strip is provided with transverse slots, is bent around its longitudinal axis and has two edge regions, whereby outwardly arced spring regions of the punched strip proceeding parallel to the transverse slots are respectively arranged between the longitudinal axis and one of the edge regions, whereby webs having recesses are arranged at prescribed intervals from one another in a first edge region and clearances aligning with these webs are provided in a second edge region, and whereby the edge regions are bent pointing toward one another.Type: GrantFiled: May 8, 1991Date of Patent: January 14, 1992Assignee: Siemens AktiengesellschaftInventors: Peter Seidel, Karl Zell
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Patent number: 5067232Abstract: A method for contacting shielding plates having press-in pins and attached to an upper side of a printed circuit board to further shielding plates also having press-in pins and located on a lower side of the printed circuit board. The upper shielding plate with press-in pins having arcuate press-in zones is placed free of force into respective through-contacted printed circuit board holes and is contacted against walls of the holes by pressing into the same holes press-in pins having V-shaped press-in zones of the lower shielding plate in order to achieve a gas-tight, good contacting, i.e. a shielding diverter.Type: GrantFiled: May 8, 1991Date of Patent: November 26, 1991Assignee: Siemens AktiengesellschaftInventors: Peter Seidel, Karl Zell
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Patent number: 5067914Abstract: A multi-pole plug mechanism has a centering strip emplaceable onto a connection board for receiving a plug, the centering strip including a shield electrically connected to regions of the chassis holding the connection board and which are connected to ground. The shield is formed by a plurality of shield elements having shielding surfaces aligned parallel to the plug-in direction and that resiliently press against a shield of the plug in the plugged condition. The centering strip is composed of a bottom plate with passages therethrough for contact blades and comprises angular spacers per prescribed unit length in the respective corner regions that have seats for the contact blades in the free end regions. The shield comprises two metallic longitudinal spring strips and two metallic transverse spring strips including cooperating recesses and hook structures for mutual connection thereof and simultaneously form the entry region for plug sections as shielding per prescribed unit length.Type: GrantFiled: April 12, 1991Date of Patent: November 26, 1991Assignee: Siemens AktiengesellschaftInventors: Peter Seidel, Karl Zell
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Patent number: 4972297Abstract: A device for shielding assemblies having multi-pole plugs. Shielding caps of multi-pole plugs having spring elements that, in the plugged-in condition of the plugs, press against contact elements oriented perpendicularly on a wiring board and connected to a grounded potential layer thereof. Metallic shielding surfaces that at least partially surround the assemblies are voltaically connected to the shielding caps with metallic connecting elements, preferably spring elements.Type: GrantFiled: April 21, 1989Date of Patent: November 20, 1990Assignee: Siemens AktiengesellschaftInventors: Karl Zell, Leo Pelzl
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Patent number: 4896248Abstract: A module frame receives insertable electrical printed circuit boards equipped with components that are connected to one another, in their inserted condition with plug connectors by way of a motherboard. A prescribed plurality of guides are arranged under one another in the module frame at defined intervals so that the printed circuit boards, having a height less than the height of the module frame, are insertable into the module frame.Type: GrantFiled: June 16, 1989Date of Patent: January 23, 1990Assignee: Siemens AktiengesellschaftInventors: Karl Zell, Egon Jaeger, Peter Stoerk, Guenther Steiner
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Patent number: 4884975Abstract: A centering strip for plugging onto a backplane printed circuit board provided with contact blades accepts plugs in a housing opening and accepts contact blades through openings in a floor of the centering strip. In order to guarantee that the individual cable plugs are correctly plugged into the proper location on the centering strip and that the centering strip is not damaged when the plug is inserted into the housing opening, the centering strip is divided into a plurality of segments by transversely oriented partitions. The partitions have two sides on an upper half portion which forms a mechanical coding devices for the plugs to be accepted. The lower half of the partitions are provided with cavities for acceptance of contact blades. The depth of the cavities is dimensioned such that the centering strip is supported on the contact blades by a solid middle part located between the upper and lower half portions of the partitions.Type: GrantFiled: February 11, 1987Date of Patent: December 5, 1989Assignee: Siemens AktiengesellschaftInventors: Leo Pelzl, Peter Seidel, Karl Zell
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Patent number: 4840573Abstract: Spring elements are located at shielding caps of printed circuit board or cable connections such that they resiliently press against contact elements in the plugged condition, the contact elements being electrically connected to the ground potential layer of a mother board. Contact blades or reinforcing plates extending perpendicularly to the mother board serve as the contact elements. The spring elements, depending upon the position of the contact elements or the shape of the shielding caps are located at the insides or outsides of the shielding caps or are fashioned at the edges thereof which are directed towards the mother board.Type: GrantFiled: December 12, 1988Date of Patent: June 20, 1989Assignee: Siemens AktiengesellschaftInventors: Peter Seidel, Leo Pelzl, Karl Zell
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Patent number: 4826453Abstract: The retention of a contact blade of a backplane printed circuit board in a centering strip ensues by means of a resilient web in the floor of the centering strip engagable by a calotte-like pock on the contact blade, thus providing definable retaining forces.Type: GrantFiled: April 9, 1987Date of Patent: May 2, 1989Assignee: Siemens AktiengesellschaftInventors: Kurt Glomb, Heinz Niggl, Leo Pelzl, Karl Zell
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Patent number: 4813890Abstract: A centering module member combined with a contact spring element, pre-mounted thereon by means of a simple plug-in connection that, when the centering module is fastened to a grounded shielding plate, the plate is directly contacted by the contact spring element. At the same time, the part of the contact spring element engaging through a corresponding recess into an interior space of the centering module member presses resiliently against a metallic housing of a plugged-in cable plug. The contact spring element forms a frame composed of webs, whereby spring tongues engaging into the interior space are attached to at least two webs lying opposite one another.Type: GrantFiled: August 14, 1987Date of Patent: March 21, 1989Assignee: Siemens AktiengesellschaftInventors: Karl Zell, Peter Seidel, Leo Pelzl
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Patent number: 4789358Abstract: The housing of the cable plug is exclusively formed of a one-piece metal part bent U-shaped which presses against the unit equipped with the contact spring elements under spring tension. In order for a shielding elimination to ensue on a short, direct path to a grounded potential carrier, the legs of the metal part nearly surround the unit or they even extend beyond it. In such a case, they are executed as resilient tongues with which an electrical connection to the grounded potential carrier directly ensues. Catch elements are provided for an interlocking connection of the metal part to the unit containing the spring clips or the blade strips. The web surface of the metal part proceeds at a slant relative to the bottom edges of its legs. In order to enable an oblique exit of the cable both toward the top and bottom, as well as toward the right and left, the said unit can also be engaged side-inverted without loss of positioning.Type: GrantFiled: August 17, 1987Date of Patent: December 6, 1988Assignee: Siemens AktiengesellschaftInventors: Karl Zell, Peter Seidel, Leo Pelzl
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Patent number: 4774764Abstract: Centering strips, pluggable onto the contact blades of a wiring backpanel for receiving cable plugs, are provided with fastening disks in the region of openings in the floor of the centering strips through which the contact blades project into the centering strip, the fastening disk likewise including openings for plugging the contact blades therethrough. After the centering strip has been plugged, the fastening disks are located such that their inner edges of their openings cut into the contact blades and their outer edges cut into the floor of the centering strip. A positive fixing between contact blade, fastening disk and centering strip is thereby achieved.Type: GrantFiled: November 10, 1986Date of Patent: October 4, 1988Assignee: Siemens AktiengesellschaftInventors: Peter Seidel, Leo Pelzl, Karl Zell
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Patent number: 4772227Abstract: The coder device prevents plugs being assembled to a counter-plug device having a different coding. The coder device is formed by tongue-like projections on a plug and by corresponding chamber-like recesses on the counter-plug device. The projections are provided with a theoretical breakage point and can be broken off. The broken off projections can be inserted into the associated recess of the housing of the counter-plug device. By breaking off projections in different combinations, it is possible to individualize the original universal coder device.Type: GrantFiled: September 26, 1985Date of Patent: September 20, 1988Assignee: Siemens AktiengesellschaftInventors: Leo Pelzl, Peter Seidel, Karl Zell
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Patent number: 4718867Abstract: A shielding device lying approximately flush against the side walls of a centering strip is formed by at least one shielding element and comprises spring elements which press resiliently against the shielding of a plug in the plugged condition of this plug. The shielding is connected to the grounded potential layer of a subrack with screws, being connected thereto via fastening tabs arranged at the shielding elements.Type: GrantFiled: June 11, 1986Date of Patent: January 12, 1988Assignee: Siemens AktiengesellschaftInventors: Peter Seidel, Leo Pelzl, Karl Zell
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Patent number: 4712849Abstract: During plugging of a plug, plug strips of the plug partially immerse into passages of a centering strip. A metallic, electrically conductive layer is applied to the lateral faces of these passages and the shielding of the plug is provided such with spring elements that the latter press resiliently against the metallic layer in the plugged condition of the plug. Means are also provided which electrically connect to metallic layer of the individual passages to one another and to the grounded potential layer of a subrack.Type: GrantFiled: June 16, 1986Date of Patent: December 15, 1987Assignee: Siemens AktiengesellschaftInventors: Peter Seidel, Leo Pelzl, Karl Zell
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Patent number: 4710132Abstract: The invention relates to an electrical plug connector strip provided with a plurality of rows of contact elements that are connected by means of terminal elements to a printed circuit board of an electrical assembly, whereby the sections of the terminal elements projecting from receptacle chambers for the contact elements are bent toward the printed circuit board. In order to obtain a simple, firm connection between the electrical plug connector strip and the printed circuit board, the back side of the plug connector strip contains a plurality of flanges having downwardly directed insertion posts. Preferably two posts are provided, one larger in diameter and length than the other. A groove is provided around each post on the underside of the flange to receive chips of the post which are cut off during the insertion process. A pinch rib may be provided on the connector strip to engage the circuit board and provide a tight fit.Type: GrantFiled: October 2, 1985Date of Patent: December 1, 1987Assignee: Siemens AktiengesellschaftInventors: Kurt Glomb, Heinz Niggl, Leo Pelzl, Karl Zell
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Patent number: 4674812Abstract: A backplane wiring comprising a backplane printed circuit board 1 through which contact pins 2 are inserted and centering strips 3 which can be plugged on the contact pins of the circuit board to allow the acceptance of plugs or clip connectors so as to provide as many plugs as possible for the backplane wiring of the PC cards. The backplane printed circuit board 1 comprises a complete pin field and the centering strips 3 are provided with lateral recesses 4 at their longitudinal walls for accepting adjoining contact pins 2.Type: GrantFiled: February 7, 1986Date of Patent: June 23, 1987Assignee: Siemens AktiengesellschaftInventors: Guenter Thom, Karl Zell
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Patent number: 4659165Abstract: The invention relates to a centering strip for plugging onto a backplane printed circuit board provided with contact blades, whereby the centering strip serving for the acceptance of spring clips has a rectangular housing open at one side. For easy pulling of centering strips plugged to a backplane printed circuit board directly next to one another, cutouts into which parts of a pulling tool can engage proceeding from the inside are provided in the side walls of two of the centering strips.Type: GrantFiled: October 2, 1985Date of Patent: April 21, 1987Assignee: Siemens AktiengesellschaftInventors: Kurt Glomb, Heinz Niggl, Leo Pelzl, Karl Zell
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Patent number: 4652066Abstract: An electric assembly is provided with a multi-row plug strip which is connected to a carrier plate arranged in the extension zone of a central row of contacts. The connector elements of the outer row of contact elements are bent into the region of the next row, around the end of the circuit board, and are inserted into bores of the circuit board from the same side as the connector elements of the other rows. The two outer rows of receiving chambers which are adjacent to the circuit board are equipped with contact elements in alternation and offset relative to one another. By means of the invention the circuit board is displaced inwards away from the spacing boundary. The plug forces are thus transferred to the circuit board in a less one-sided fashion.Type: GrantFiled: September 26, 1985Date of Patent: March 24, 1987Assignee: Siemens AktiengesellschaftInventors: Leo Pelzl, Juergen Seibold, Karl Zell