Abstract: A friction controlled mechanism configured to operate in conjunction with an assembly having a moveable structure and a stationary structure. The mechanism includes a frame member having a length and a friction based flexible member slidably wrapped around a perimeter of the frame member such that the flexible member travels in opposite directions around the perimeter of the frame member during movement of the moveable structure toward and away from the stationary structure. The flexible member imparts a friction to side rails of the stationary structure and to side rails of the moveable structure to provide a controlled stable movement of the moveable structure.

Abstract: An electronic device having ESD (Electrostatic Discharge) protection for a plurality of sides and including an external cover having at least one aperture and a plurality of slots disposed sufficiently close to a periphery of the at least one aperture. The electronic device further includes an ESD shield configured for providing ESD protection for a second side of an electronic device and also for the first side, the second side being opposite the first side. The ESD shield includes an ESD-shielding surface configured to provide the ESD protection for at least a portion of the second side, and a plurality of orthogonally protruding ESD shielding tabs, individual ones of the plurality of orthogonally protruding ESD shielding tabs configured to fit within respective ones of the plurality of slots when the ESD shield is mated with the external cover.

Abstract: An electronic device having ESD (Electrostatic Discharge) protection for a plurality of sides and including an external cover having at least one aperture and a plurality of slots disposed sufficiently close to a periphery of the at least one aperture. The electronic device further includes an ESD shield configured for providing ESD protection for a second side of an electronic device and also for the first side, the second side being opposite the first side. The ESD shield includes an ESD-shielding surface configured to provide the ESD protection for at least a portion of the second side, and a plurality of orthogonally protruding ESD shielding tabs, individual ones of the plurality of orthogonally protruding ESD shielding tabs configured to fit within respective ones of the plurality of slots when the ESD shield is mated with the external cover.

Abstract: A portable wireless handset with enhanced acoustic functions is disclosed having a chamber gasket that has an opening sized to receive a speaker. When inserted into the opening, the speaker seals to the chamber gasket. The chamber gasket also seals to a support surface, so that a sealed acoustic chamber is created. The keypad has an opening in the user interface area for receiving a speaker, and a navigation input key may be positioned over the speaker. In this way, the speaker shares an area with the navigation key, and projects sounds through vents in the navigation key. With the speaker sealed to the keypad, and the keypad sealed to a printed circuit board, a sealed acoustic chamber is formed. Acoustic energy emitted from the back of the speaker is received into the sealed chamber, thereby improving the sound quality for sound projected from the front of the speaker.

Abstract: A cellular motor control network including a service center and a plurality of local cell controllers in communication with the service center, with each of the plurality of local cell controllers having a plurality of cellular motor controls in communication therewith. Each cellular motor control coupled to a variable speed electric motor. The cellular motor control including control circuits for controlling the operation of the variable speed electric motor, a microprocessor coupled to the control circuits for providing a predetermined control program, and a transceiver coupled to the microprocessor for communicating information between the microprocessor and other control units in the network.