Patent application number | Description | Published |
20090168249 | FLEXURE BASED SHOCK AND VIBRATION SENSOR FOR HEAD SUSPENSIONS IN HARD DISK DRIVES - Systems and methods for flexure based shock and vibration sensor for head suspensions in hard disk drives. Specifically, this invention deals with operational shock and vibration management within a hard disk drive. In one implementation, the assembly includes a circuit embedded optical waveguide sensor that includes a flexible electrical circuit board with a configuration of either a single or multi layers of conductor traces, a thin flexure gimbal for carrying and flying a HDD slider, a consecutive sensing layer constructed by an optical core and by clad construction with a configuration of either a single core array or a plural core array, an optical loop formed by light input and an output core, optical grating disposed on the consecutive sensing layer forming an optical grating waveguide sensor, a light emitter for injecting light into the optical core, and a receiver receiving the output light from the optical core. | 07-02-2009 |
20100046351 | COPPER RESIDUAL STRESS RELAXATION REDUCTION MEANS FOR HARD DISK DRIVE SLIDER GIMBALS - Disclosed are various techniques for reduction of the magnitude of the residual stress in the HDD gimbal circuits, or more specifically, the residual plastic strain. Various trace structures of the gimbal circuits as well as stress suppressors are utilized to achieve the reduction of the residual stress in the circuit. | 02-25-2010 |
20120008227 | HEAT TRANSFER FOR A HARD-DRIVE PRE-AMP - A substrate for mounting a preamp chip thereupon, fabricated using a stiffener layer made of a conductive material; an insulating layer provided over the circuitry area of the substrate; a circuitry made of a conductive material provided over the insulating layer; and a flap which is an extension of the stiffener layer having no insulating layer provided thereupon. The flap is fabricated to fold over the preamp chip to remove heat therefrom. | 01-12-2012 |
20120200959 | FLEXURE BASED SHOCK AND VIBRATION SENSOR FOR HEAD SUSPENSIONS IN HARD DISK DRIVES - Systems and methods for flexure based shock and vibration sensor for head suspensions in hard disk drives. Specifically, this invention deals with operational shock and vibration management within a hard disk drive. In one implementation, the assembly includes a circuit embedded optical waveguide sensor that includes a flexible electrical circuit board with a configuration of either a single or multi layers of conductor traces, a thin flexure gimbal for carrying and flying a HDD slider, a consecutive sensing layer constructed by an optical core and by clad construction with a configuration of either a single core array or a plural core array, an optical loop formed by light input and an output core, optical grating disposed on the consecutive sensing layer forming an optical grating waveguide sensor, a light emitter for injecting light into the optical core, and a receiver receiving the output light from the optical core. | 08-09-2012 |
20120229934 | COPPER RESIDUAL STRESS RELAXATION REDUCTION MEANS FOR HARD DISK DRIVE SLIDER GIMBALS - Disclosed are various techniques for reduction of the magnitude of the residual stress in the HDD gimbal circuits, or more specifically, the residual plastic strain. Various trace structures of the gimbal circuits as well as stress suppressors are utilized to achieve the reduction of the residual stress in the circuit. | 09-13-2012 |
20120238072 | HEAT TRANSFER FOR A HARD-DRIVE PRE-AMP - A substrate for mounting a preamp chip thereupon, fabricated using a stiffener layer made of a conductive material; an insulating layer provided over the circuitry area of the substrate; a circuitry made of a conductive material provided over the insulating layer; and a flap which is an extension of the stiffener layer having no insulating layer provided thereupon. The flap is fabricated to fold over the preamp chip to remove heat therefrom. | 09-20-2012 |
20120291260 | GROUND VIAS FOR ENHANCED PREAMP HEAT RELEASE IN HARD DISK DRIVES - Described is a preamp flex cable for use in a hard drive. The flex cable incorporates a stiffener layer operable to provide a mechanical support, an insulating layer provided over the stiffener layer and having at least one via provided therein to expose the stiffener layer, and at least one conductive layer provided over the insulating layer. The at least one conductive layer forms an electrical circuit and at least one heat removing element that extends through the via and establishes a contact with the stiffener layer. In one implementation, the heat removing element includes a rectangular plate having a recessed center portion and an edge portion. The recessed center portion protrudes through the at least one via in the insulating layer to mechanically couple with the stiffener. In another implementation, the heat removing element includes first portion and second rectangular portions. The first portion protrudes through the at least one via in the insulating layer to thermally couple with the stiffener and the second portion is disposed over the insulating layer, such that the second portion can be thermally coupled to the preamp. | 11-22-2012 |
20130107397 | CIRCUIT INTEGRATED SUSPENSION AND METHOD OF MANUFACTURE THEREOF | 05-02-2013 |
20130314882 | DYNAMIC LOOP WITH FOLD - A single layer dynamic loop is provided. A single layer dynamic loop includes a set of traces divided by a slit on the single layer dynamic loop, wherein the set of traces are divided into a first region and a second region; and wherein the single layer dynamic loop is folded along the slit to move at least part of the first region in relation to the second region. | 11-28-2013 |
20140285926 | COPPER RESIDUAL STRESS RELAXATION REDUCTION MEANS FOR HARD DISK DRIVE SLIDER GIMBALS - A hard drive gimbal trace circuit includes: a stainless steel gimbal strut (SGST) configured to support a transducer and nullify a natural pitch angle of a flexure from mechanical-coarse adjustment of the SGST; traces forming a trace structure, and being plastically deformed at a high strain region from the mechanical-coarse adjustment of the SGST; and a first protrusion and a second protrusion being at least partially disposed under the high strain region. The SGST has an edge which is disposed on the transducer side to be spaced apart from the traces in the high strain region and extends substantially parallel to the traces. The first protrusion and the second protrusion extend from the edge in an orthogonal direction to an extending direction of the traces and across the traces, and are disposed side by side in the extending direction of the traces. | 09-25-2014 |
20140293486 | CIRCUIT INTEGRATED SUSPENSION AND METHOD OF MANUFACTURE THEREOF - An Extended Circuit Integrated Suspension (ECIS) includes: a load beam, including a first plurality of traces disposed on a first side of the load beam and a first connection portion; and a flexure circuit which is disposed on an opposite side of the first side of the load beam and connected to the load beam by the first connection portion, and includes a second plurality of traces and a second connection portion to connect to the first plurality of traces on the load beam. | 10-02-2014 |