Seagate Technology Incorporated

Joe Amade Wood

Paul Allison Beatty

Aaron Steve Macpherson

Aspects of this disclosure are directed to methods, apparatuses and approaches involving the use of a moisture absorbing material (e.g., desiccant) to control moisture. As may be implemented consistent with one or more embodiments, moisture is removed from an environmental control module that includes a desiccant material contained within a package. Liquid is deposited inside the package and sealed with the desiccant in the package.

Humidity control for enclosure

A stacked actuator assembly has symmetrical actuator arms and spacers stacked on a rotatable sleeve. The assembly may have circuit elements or other elements attached on one side of the assembly. The weight of these elements is counter balanced by a screw or pin mounted on the other side of the assembly. The screw passes through the stacked armature arms and spacers to clamp the arms and spacers relative to each other and prevent them from rotating relative to each other. In addition, the spacers may be position registered relative to each other by registration members molded into the spacers. The registration members in adjacent spacers mate with each other to register the spacers relative to each other. The stacked actuator assembly may be assembled on a jig. The jig has a mounting hole or post to receive the sleeve for the stacked actuator assembly, and it has a post to register the arms when they are stacked on the sleeve. It has a spacer registration member to register the first spacer stacked on the sleeve; thereafter, the additional spacers stacked on the assembly register relative to each other. Alternatively, the jig may have a second post to register the position of the spacer that carries the coil of the voice coil motor.

Stacked actuator arm assembly clamp

A stacked actuator for controllably positioning a data transducing head adjacent a data recording surface in a disc drive, and a method for fabricating the stacked actuator. The stacked actuator is formed from a plurality of stackable members arranged into a component stack. A counterbalance fastener is installed on a first side of the component stack to secure the stackable members together. A flex circuit assembly is subsequently affixed to a second side of the component stack opposite the first side. The mass and location of the counterbalance fastener are selected to counterbalance the mass of the flex circuit assembly so that the completed actuator is nominally balanced about an actuator rotational axis.

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Longmont, CO, United States of America

Joe Amade Wood