Seagate Technology Incorporated

David G Fitzgerald

David Lapp

Jerome Thomas Coffey

Samuel E Severson

Robert Mitchell Gibbs

Jeffrey Leonard Bruce

Jeffrey James Croxall

Darrel Ray Culver

Neal Frank Gunderson

Wolfgang Rosner

Sonia Marrero

Kok Chai Low

Edward J Seibert

An electric power source in which an electron collector and an electron emitter, having a higher work function than the electron collector, are connected peripherally by a wire and placed very close together. An electric potential difference develops between the electron collector and the electron emitter as electrons spontaneously flow through the wire from the electron collector to the electron emitter due to the difference in work functions. With the electron collector and electron emitter positioned extremely close together, the small electric potential difference creates a strong electric field. The strong electric field allows field emission of electrons from the electron emitter. The emitted electrons then cross the small gap to the electron collector, completing the electric circuit, allowing a continuous electric current to flow, making this device an electric power source.

Electric power source employing field emission

Described are enclosures that include a friction stir weld, including electronic device enclosures, and precursors thereof, that contain a base and a cover that in an assembled condition form a joint at which a friction stir weld can be produced, as well as methods for producing a friction stir weld at a joint of such an assembly.

Enclosures, devices with a friction stir weld, precursors thereof, and related methods

Certain exemplary aspects of the present disclosure are directed towards dual cavity apparatus and related methods involving hermetically sealing the cavities by evacuating and atmosphere therein, filling the cavity with a gas, and sealing the gas in the cavities. This evacuation and fill approach is carried out through openings that provide access to the cavities. During evacuation of at least one of the cavities through one of the openings, one or more spacers prevent the cavity from collapsing in response to the vacuum force.

Method and apparatus with multiple cavities

A hard drive includes a base deck and process cover that define a cavity for housing data storage components. The hard drive further includes a final cover that is placed over the process cover and is coupled to the base deck. The final cover and process cover are directly coupled to each other.

Methods and devices for sealing hard drives

A hard drive includes a base deck with sidewalls to define a cavity. The hard drive further includes a weld lip that is positioned along and extends from the sidewalls. The weld lip includes a thermal choke that is configured to reduce heat transfer from the weld lip to the sidewalls.

Certain exemplary aspects of the present disclosure are directed towards a disc drive apparatus. A base deck and a cover are joined to one another by a friction-stir weld along a lip of the cover that extends along a periphery of the cover and over a surface of the base deck. The base deck and cover enclose a cavity, which is hermetically sealed by the weld.

Growing community of inventors

Lafayette, CO, United States of America

David G Fitzgerald