Abstract: A cover for a handheld device having a device body and a speaker. The cover includes a cover body which is configured for covering at a portion of the device body and for covering the speaker. The cover body forms an outlet opening. The cover further includes a channel for communication with the speaker and for harnessing and concentrating sound waves from the speaker to the outlet opening, with the channel having a length and a cross section increasing in magnitude along the length of the channel.

Abstract: A cover for a hand-held device, which has a device body and a speaker, includes a cover body configured for covering a portion the device body and for covering the speaker and a channel for positioning adjacent the device body. The channel is configured to form a sound duct when mounted adjacent the back side of the device body and to be in communication with the speaker when the cover is mounted to the hand-held device for redirecting at least a portion of the sound waves emitted from the speaker to a location remote from the speaker.

Abstract: A cover for a handheld device having a device body and a speaker. The cover includes a cover body which is configured for covering at a portion of the device body and for covering the speaker. The cover body forms an outlet opening. The cover further includes a channel for communication with the speaker and for harnessing and concentrating sound waves from the speaker to the outlet opening, with the channel having a length and a cross section increasing in magnitude along the length of the channel.

Abstract: A cover for a hand-held device, which has a device body and a speaker, includes a cover body configured for covering a portion the device body and for covering the speaker and a channel for positioning adjacent the device body. The channel is configured to form a sound duct when mounted adjacent the back side of the device body and to be in communication with the speaker when the cover is mounted to the hand-held device for redirecting at least a portion of the sound waves emitted from the speaker to a location remote from the speaker.

Abstract: An article of footwear includes a sole, an upper portion, and an energy storage system. The upper portion includes a shell for enclosing a user's foot therein. The energy storage system extends between the upper portion and the sole and converts impact forces generated by the user at the heel portion of the shell into propulsion forces to thereby enhance the user's performance.

Abstract: An article of footwear includes a sole, an upper portion, and an energy storage system. The upper portion includes a shell for enclosing a user's foot therein. The energy storage system extends between the upper portion and the sole and converts impact forces generated by the user at the heel portion of the shell into propulsion forces to thereby enhance the user's performance.

Abstract: An article of footwear of the present invention includes a sole and an upper portion, which forms a shell for enclosing a user's foot therein. The shell has a collar for extending around a user's ankle and a suspension system extending between the upper portion and the sole. The suspension system including an energy storage member, which transfers reaction forces from the sole to the shell generally at the collar whereby the energy storage member reduces overturning moment forces on the user's ankle when lateral forces are applied to the article of footwear.

Abstract: The pressure within a pressurized flow reactor operated under harsh environmental conditions is controlled by establishing and maintaining a fluidized bed of uniformly sized granular material of selected density by passing the gas from the reactor upwardly therethrough at a rate sufficient to fluidize the bed and varying the height of the bed by adding granular material thereto or removing granular material therefrom to adjust the backpressure on the flow reactor.