Abstract: An earpiece includes a housing, an arm having one or more projections extended from one end and rotatably engaged into the housing, and an arc having one end rotatably secured to the arm and rotatable relative to the arm. The arc includes a chamber, a casing is received in the chamber of the arc, and has a space to receive one or more batteries. A cap is engaged onto the casing, to retain the battery in the casing. The casing includes a latch detachably secured to the arc, to detachably secure the casing and the battery and the cap to the arc.

Abstract: An adjustable earpiece includes an aperture formed in a housing, and a speaker attached to the housing. An arm includes one end having a projection rotatably engaged into the housing, and having a cavity. An arc includes one end rotatably secured to the other end of the arm and rotatable relative to the arm. A retainer is secured in the housing with such as a lock pin, and includes a catch engaged through the aperture of the housing, and engaged into the cavity of the arm, to rotatably secure the arm to the housing. The arm includes a ball rotatably secured in the housing.

Abstract: An earpiece includes a housing, an arm having one or more projections extended from one end and rotatably engaged into the housing, and an arc having one end rotatably secured to the arm and rotatable relative to the arm. The arc includes a chamber, a casing is received in the chamber of the arc, and has a space to receive one or more batteries. A cap is engaged onto the casing, to retain the battery in the casing. The casing includes a latch detachably secured to the arc, to detachably secure the casing and the battery and the cap to the arc.

Abstract: A housing for computer or the like includes a front wall, a refractive planer member attached to the housing and having a rib or a swelling engaged into the housing, and a light device disposed in the housing for generating light through the planer member and toward the rib and the swelling, and for allowing the light to be seen through the rib or the swelling. The rib has two curved ends for flushing with the curved sides of the housing. The planer member includes a curved recess formed in a bulge and facing toward the light device for receiving the light generated by the light device.

Abstract: A protective shielding device includes a circuit board having a notch and one or more holes formed in one side, and a shielding member engaged onto the circuit board for shielding the circuit board and having a leg extended from one side for engaging through the notch and for extending toward the lower portion of the circuit board. The leg includes one or more catches for engaging into the holes and for latching the shielding member to the circuit board. The other sides of the shielding member and the circuit board may then be secured together with fasteners.

Abstract: A housing for computer or the like includes a front wall, a refractive planer member attached to the housing and having a rib or a swelling engaged into the housing, and a light device disposed in the housing for generating light through the planer member and toward the rib and the swelling, and for allowing the light to be seen through the rib or the swelling. The rib has two curved ends for flushing with the curved sides of the housing. The planer member includes a curved recess formed in a bulge and facing toward the light device for receiving the light generated by the light device.

Abstract: A circuit board includes two or more electric members attached onto the board, and two or more peripheral frames attached onto the board and disposed around the electric member respectively, for separating electric member from each other and for preventing the electric member from being interfered with each other. The peripheral frame are preferably conductive and/or preferably grounded for facilitating the frequencies separating between the electric members. The board includes two or more peripheral lines, and the peripheral frames are engaged onto the peripheral line.