# US 2021/0241791 A1 · Suspension Damping > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0241791 A1 - Document ID: US20210241791A1 - Status: Published application - Kind: A1 - Application number: 17/158,955 - Filed: 2021-01-26 - Published: 2021-08-05 - Earliest claimed: 2020-01-31 - Assignees: Magnecomp Corporation - Applicants: Magnecomp Corporation - Inventors: Ekaratch Pankaew; Kuen Chee Ee; Preecha Sudachun; David Glaess; Chanatkarn Angsutanasombat - Web page: https://patentgrep.com/patent/US20210241791A1 ## CPC - G11B 5/4833: {Structure of the arm assembly, e.g. load beams, flexures, parts of the arm adapted for controlling vertical force on the head (G11B5/484 takes precedence)} - G11B 5/486: {with provision for mounting or arranging electrical conducting means or circuits on or along the arm assembly} - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract A dielectric layer configured to overlay a spring metal layer in a suspension assembly is described. The dielectric layer includes a tongue portion including a proximate end and a distal end, trace portions extending from the tongue portion, and an aperture aligned with the void and defined by the tongue portion. The aperture includes an elongated opening with opposing ends partially aligning with the central opening of the void. The aperture further includes slits extending from the opposing ends of the elongated opening and at least partially aligned with slits of the void in the spring metal layer. ## Claims ### Claim 1 A suspension comprising: a flexure including a gimbal, a proximal end, and a distal end, the flexure having a longitudinal axis extending from the proximal end to the distal end, the gimbal includes a spring metal layer having a base portion, a tongue, and a pair of spring arms extending from the base portion to the tongue, a dielectric layer overlaying the spring metal layer and a conductive metal layer overlying the dielectric layer, the conductive metal layer including a first plurality of traces extending from the base portion to the tongue and a second plurality of traces extending from the base portion to the tongue; and a void formed in the spring metal layer and partially surrounding the tongue, a portion of the first plurality of traces and a portion of the second plurality of traces are coupled over the void and extend towards the tongue, and a portion of the dielectric layer overlays a section of the void formed in the spring metal layer. ### Claim 2 (depends on 1) The suspension of claim 1, wherein the void includes a central opening with opposing ends, first and second channels extending from the opposing ends of the central opening. ### Claim 3 (depends on 2) The suspension of claim 2, wherein the dielectric layer includes a tongue portion, trace portions, and an aperture aligned with the void and defined by the tongue portion and the trace portions, the tongue portion includes a proximate end and a distal end, the trace portions extending from the distal end of the tongue portion, the aperture includes an elongated opening with opposing ends partially aligning with the central opening of the void, and slits extending from the opposing ends of the elongated opening and at least partially exposing the first and second channels of the void. ### Claim 4 (depends on 3) The suspension of claim 3, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 40% of a length between the proximate end and the distal end of the tongue portion. ### Claim 5 (depends on 3) The suspension of claim 3, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 25% of a length between the proximate end and the distal end of the tongue portion. ### Claim 6 (depends on 3) The suspension of claim 3, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 80% of a length between the proximate end and the distal end of the tongue portion. ### Claim 7 (depends on 3) The suspension of claim 3, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 50% of a length between the proximate end and the distal end of the tongue portion. ### Claim 8 (depends on 2) The suspension of claim 2, wherein the dielectric layer includes a tongue portion, trace portions, and an aperture aligned with the void and defined by the tongue portion, the tongue portion includes a proximate end and a distal end, the trace portions extending from the proximate end of the tongue portion, the aperture includes an elongated opening with opposing ends partially aligning with the central opening of the void. ### Claim 9 A dielectric layer configured to overlay a spring metal layer in a suspension assembly, the dielectric layer comprising: a tongue portion including a proximate end and a distal end; trace portions extending from the tongue portion; and an aperture configured to be aligned with a void of the spring metal layer and defined by the tongue portion, the aperture includes an elongated opening with opposing ends partially aligning with the central opening of the void. ### Claim 10 (depends on 9) The dielectric layer of claim 9, wherein the aperture further includes slits extending from the opposing ends of the elongated opening and at least partially aligned with channels of the void of the spring metal layer. ### Claim 11 (depends on 10) The dielectric layer of claim 10, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 40% of a length between the proximate end and the distal end of the tongue portion. ### Claim 12 (depends on 10) The dielectric layer of claim 10, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 25% of a length between the proximate end and the distal end of the tongue portion. ### Claim 13 (depends on 10) The dielectric layer of claim 10, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 80% of a length between the proximate end and the distal end of the tongue portion. ### Claim 14 (depends on 10) The dielectric layer of claim 10, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 50% of a length between the proximate end and the distal end of the tongue portion. ### Claim 15 (depends on 10) The dielectric layer of claim 10, wherein a portion of the trace portions are coupled over the void. ### Claim 16 A flexure comprising: a gimbal, a proximal end, and a distal end, the flexure having a longitudinal axis extending from the proximal end to the distal end, the gimbal includes a spring metal layer including a base portion, a tongue, and a pair of spring arms extending from the base portion to the tongue, a dielectric layer overlaying the spring metal layer and a conductive metal layer overlying the dielectric layer, the conductive metal layer including a first plurality of traces extending from the base portion to the tongue and a second plurality of traces extending from the base portion to the tongue; and a void formed in the spring metal layer and partially surrounding the tongue, a portion of the dielectric layer overlays a section of the void formed in the spring metal layer, wherein the void includes a central opening with opposing ends, and first and second channels extending from the opposing ends of the central opening. ### Claim 17 (depends on 16) The flexure of claim 16, wherein the dielectric layer includes a tongue portion, trace portions, and an aperture aligned with the void and defined by the tongue portion and the trace portions, the tongue portion includes a proximate end and a distal end, the trace portions extending from the distal end of the tongue portion, and the aperture includes an elongated opening with opposing ends partially aligning with the central opening of the void, and slits extending from the opposing ends of the elongated opening and at least partially exposing the first and second channels of the void. ### Claim 18 (depends on 17) The flexure of claim 17, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 40% of a length between the proximate end and the distal end of the tongue portion. ### Claim 19 (depends on 17) The flexure of claim 17, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 25% of a length between the proximate end and the distal end of the tongue portion. ### Claim 20 (depends on 17) The flexure of claim 17, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 80% of a length between the proximate end and the distal end of the tongue portion. ### Claim 21 (depends on 17) The flexure of claim 17, wherein the slits of the aperture extend from the opposing ends of the elongated opening up to 50% of a length between the proximate end and the distal end of the tongue portion. ### Claim 22 (depends on 16) The flexure of claim 16, wherein the dielectric layer includes a tongue portion, trace portions, and an aperture aligned with the void and defined by the tongue portion, the tongue portion includes a proximate end and a distal end, the trace portions extending from the proximate end of the tongue portion, and the aperture includes an elongated opening with opposing ends partially aligning with the central opening of the void.