Abstract: A foldable cellular phone with a plastic housing having an operation section and a plastic housing having a main display section that are joined by a hinge on one end side to freely open and close, comprising an impact resistant handle composed of elastic material protruded and formed on the opposite side end from the hinge of the housing having the main display section; a connector cover composed of elastic material protruded and formed on the opposite side end from the hinge of the housing having the operation section; and a hinge cover composed of elastic material formed on a protrudent portion from the hinge of both housing ends when both housings are in a folded state.

Abstract: A waterproof structure with a simple structure and a good assemble workability is provided. A recess portion is formed on a side of an inner casing, and a through hole is formed at the bottom of the recess portion. The through hole runs to a housing recess portion, and a dome switch opposes to the through hole in the inner casing. A protrusion of a cup member is inserted into the through hole from the outside of the inner casing. A protrusive portion protruding from the bottom surface of a push button is inserted into the opening of the cup member. A rubber sheet which couples the push button is sandwiched between the inner casing and a top cover and a back cover.

Abstract: A waterproof structure with a simple structure and a good assemble workability is provided. A recess portion is formed on a side of an inner casing, and a through hole is formed at the bottom of the recess portion. The through hole runs to a housing recess portion, and a dome switch opposes to the through hole in the inner casing. A protrusion of a cup member is inserted into the through hole from the outside of the inner casing. A protrusive portion protruding from the bottom surface of a push button is inserted into the opening of the cup member. A rubber sheet which couples the push button is sandwiched between the inner casing and a top cover and a back cover.

Abstract: A foldable cellular phone with a plastic housing having an operation section and a plastic housing having a main display section that are joined by a hinge on one end side to freely open and close, comprising an impact resistant handle composed of elastic material protruded and formed on the opposite side end from the hinge of the housing having the main display section; a connector cover composed of elastic material protruded and formed on the opposite side end from the hinge of the housing having the operation section; and a hinge cover composed of elastic material formed on a protrudent portion from the hinge of both housing ends when both housings are in a folded state.

Abstract: A copper alloy for electronic instruments is disclosed which comprises 2.0 to 7.0 wt. % of Sn, 1.0 to 6.0 wt. % in total amount of at least one kind of Ni, Co and Cr, o.1 to 2.0 wt. % of Si, and the remainder of Cu and unavoidable impurities, thereby further the content of O.sub.2 in unavoidable impurities being not more than 50 ppm, the content of S being not more than 20 ppm, and the average particle diameter of precipitates being not larger than 10 .mu.m. As the uses of such copper alloys, lead material for semiconductor elements and connector, socket, spring and terminal for electronic and electric instruments are claimed.

Abstract: A method of aligning an object comprises the steps of providing a V-shaped mark which moves in correspondence with the position of the object, determining a position where this mark and a straight mark detection line crosses each other, and positioning this object on the basis of information on this determined position.