# US 10,311,349 B1 · Dynamic magnetic stripe communications device with stepped magnetic material for magnetic cards and devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,311,349 B1 - Document ID: US10311349B1 - Status: Granted - Kind: B1 - Application number: 15/591,027 - Filed: 2017-05-09 - Granted: 2019-06-04 - Earliest claimed: 2012-11-30 - Assignees: Dynamics Inc. - Applicants: Dynamics Inc. - Inventors: James H. Workley - Web page: https://patentgrep.com/patent/US10311349B1 ## CPC - G06K 19/06196: {Constructional details} - G06K 19/06206: {the magnetic marking being emulated} - G06K 19/0702: {the arrangement including a battery} - G06K 19/07707: {the visual interface being a display, e.g. LCD or electronic ink} - H01F 5/003: {Printed circuit coils} - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract A flexible card may include a dynamic magnetic stripe communications device having multiple layers, such as an electromagnetic generator, a magnet, and a shield. A shield may form a non-flexible layer within the stack and may bend, but the shield may not be able to stretch or compress. Flexible layers may surround and adhere to the shield such that when the card is flexed, the flexible layers may stretch and compress with the movement of the shield. The dynamic magnetic stripe communications device may include one or more coils. Each coil may contain a stepped material, such that a length of a lower layer of the stepped material is longer than a length of a middle layer of the stepped material, which is longer than a length of a top layer of the stepped material. ## Claims ### Claim 1 A device comprising: a dynamic magnetic stripe communications apparatus including, an electromagnetic generator including a first coil, a first stepped material within the first coil, a second coil, and a second stepped material within the second coil. ### Claim 2 (depends on 1) The device of claim 1, wherein a first dimension of the device is greater than any other dimension of the device, and the first and second coils are linearly aligned and extend in a first direction of the first dimension. ### Claim 3 (depends on 1) The device of claim 1, further comprising a magnet. ### Claim 4 (depends on 1) The device of claim 1, further comprising a printed circuit board (PCB). ### Claim 5 (depends on 1) The device of claim 1, further comprising: a printed circuit board (PCB); and an adhesive layer including an adhesive material. ### Claim 6 (depends on 1) The device of claim 1, further comprising: a printed circuit board (PCB); a magnet; and an adhesive layer including an adhesive material between the PCB and the magnet. ### Claim 7 (depends on 1) The device of claim 1, further comprising: a printed circuit board (PCB); a magnet; and an adhesive layer including an adhesive material, wherein the adhesive layer is between the PCB and the electromagnetic generator, and the magnet is on a side opposite the electromagnetic generator from the adhesive. ### Claim 8 (depends on 1) The device of claim 1, further comprising: a magnet, wherein a first dimension of the device is greater than any other dimension of the device, the first and second coils are linearly aligned and extend in a direction of the first dimension, and the magnet extends in parallel with the first and second coils in the direction. ### Claim 9 (depends on 1) The device of claim 1, further comprising: a magnet; and an adhesive layer, wherein a first dimension of the device is greater than any other dimension of the device, the first and second coils are linearly aligned and extend along a direction of the first dimension, and the magnet is in parallel with the first and second coils on an opposite side of the first and second coils from the adhesive layer. ### Claim 10 (depends on 1) The device of claim 1, further comprising: a printed circuit board (PCB); and an adhesive layer including an adhesive material, wherein a first dimension of the device is greater than any other dimension of the device, the first and second coils are linearly aligned and extend in a direction of the first dimension, and the adhesive layer is between the electromagnetic generator and the PCB. ### Claim 11 (depends on 1) The device of claim 1, further comprising: a printed circuit board (PCB); and an adhesive layer including an adhesive material, wherein a first dimension of the device is greater than any other dimension of the device, the first and second coils are linearly aligned and extend in a direction of the first dimension, and the adhesive layer flexibly bonds the electromagnetic generator to the PCB. ### Claim 12 (depends on 1) The device of claim 1, further comprising: a flexible printed circuit board (PCB); an adhesive layer including an adhesive material forming a flexible bond between the electromagnetic generator and the flexible PCB; and a magnetic layer including a magnetic material on an opposite side of the electromagnetic generator from the PCB, wherein a first dimension of the device is greater than any other dimension of the device, and the first and second coils are linearly aligned and extend in a direction of the first dimension. ### Claim 13 (depends on 1) The device of claim 1, further comprising: a flexible printed circuit board (PCB); a first adhesive layer including a first adhesive material flexibly bonding the electromagnetic generator to the flexible PCB; a magnetic layer including a magnetic material on an opposite side of the electromagnetic generator from the PCB; and a second adhesive layer including a second adhesive material flexibly bonding the magnetic layer to the electromagnetic generator, wherein a first dimension of the device is greater than any other dimension of the device, and the first and second coils are linearly aligned and extend in a direction of the first dimension. ### Claim 14 (depends on 1) The device of claim 1, further comprising: a flexible printed circuit board (PCB); a first adhesive layer including a first adhesive material, the electromagnetic generator flexibly bonded to the flexible PCB by the first adhesive material; a magnetic layer including a magnetic material on an opposite side of the electromagnetic generator from the PCB; a second adhesive layer including a second adhesive material, the magnetic layer flexibly bonded to the electromagnetic generator by the second adhesive material; and a third adhesive layer including a third adhesive material, the third adhesive layer on an opposite side of the magnetic layer from the PCB, wherein a first dimension of the device is greater than any other dimension of the device, and the first and second coils are linearly aligned and extend in a direction of the first dimension. ### Claim 15 (depends on 1) The device of claim 1, further comprising: a flexible printed circuit board (PCB); a first adhesive layer including a first adhesive material, the electromagnetic generator flexibly bonded to the flexible PCB by the first adhesive; a magnetic layer including a magnetic material on an opposite side of the electromagnetic generator from the PCB; a second adhesive layer including a second adhesive material, the magnetic layer flexibly bonded to the electromagnetic generator; a shield; and a third adhesive layer including a third adhesive material, the shield flexibly bonded to the magnetic layer on an opposite side of the magnetic layer from the PCB, wherein a first dimension of the device is greater than any other dimension of the device, the first and second coils are linearly aligned and extend in a direction of the first dimension, and the electromagnetic generator is flexible. ### Claim 16 (depends on 1) The device of claim 1, further comprising: a flexible printed circuit board (PCB); a first adhesive layer including a first flexible adhesive material between the electromagnetic generator and the flexible PCB; a magnetic layer including a flexible magnetic material on an opposite side of the electromagnetic generator from the PCB; a second adhesive layer including a second flexible adhesive material between the electromagnetic generator and the magnetic layer; and a shield layer on an opposite side of the magnetic layer from the PCB, a third adhesive layer including a third adhesive material between the shield and the magnetic layer; wherein a first dimension of the device is greater than any other dimension of the device, and the first and second coils are linearly aligned and extend in a direction of the first dimension. ### Claim 17 (depends on 1) The device of claim 1, further comprising: a flexible printed circuit board (PCB); a first adhesive layer including a first flexible adhesive material between the electromagnetic generator and the flexible PCB; a magnetic layer including a flexible magnetic material on an opposite side of the electromagnetic generator from the PCB; a second adhesive layer including a second flexible adhesive material between the electromagnetic generator and the magnetic layer; and a shield layer on an opposite side of the magnetic layer from the PCB, wherein a first dimension of the device is greater than any other dimension of the device, the first and second coils are linearly aligned and extend in a direction of the first dimension, and the device is configured to flex without delaminating the shield. ### Claim 18 (depends on 1) The device of claim 1, further comprising: a flexible printed circuit board (PCB); a first adhesive layer including a first flexible adhesive material between the electromagnetic generator and the flexible PCB; a magnetic layer including a flexible magnetic material on an opposite side of the electromagnetic generator from the PCB; a second adhesive layer including a second flexible adhesive material between the electromagnetic generator and the magnetic layer; and a substantially non-flexible shield layer on an opposite side of the magnetic layer from the PCB, wherein a first dimension of the device is greater than any other dimension of the device, the first and second coils are linearly aligned and extend in a direction of the first dimension, the electromagnetic generator is flexible, 99 and the device is configured to flex without delaminating the shield. ### Claim 19 (depends on 1) The device of claim 1, further comprising: a flexible printed circuit board (PCB); a first adhesive layer including a first flexible adhesive material between the electromagnetic generator and the flexible PCB; a second adhesive layer including a second flexible adhesive material; a magnetic layer including a flexible magnetic material, the second flexible adhesive material between the magnetic layer and the electromagnetic generator; a third adhesive layer including a third flexible adhesive material; a substantially non-flexible shield, the third flexible adhesive material between the shield and the magnetic layer; and a protective layer on a stacked structure including the first adhesive layer, the electromagnetic generator, the second adhesive layer, the magnetic layer, the third adhesive layer and the shield, wherein the electromagnetic generator is flexible, a first dimension of the device is greater than any other dimension of the device, and the first and second coils are linearly aligned and extend in a direction of the first dimension.