Abstract: An improved scribe etch process for semiconductor laser chip manufacturing is provided. A method to etch a scribe line on a semiconductor wafer generally includes: applying a mask layer to a surface of the wafer; photolithographically opening a window in the mask layer along the scribe line; etching a trench in the wafer using a chemical etchant that operates on the wafer through the window opening, wherein the chemical etchant selectively etches through crystal planes of the wafer to generate a V-groove profile associated with the trench; and cleaving the wafer along the etched trench associated with the scribe line through application of a force to one or more regions of the wafer.

Abstract: An improved scribe etch process for semiconductor laser chip manufacturing is provided. A method to etch a scribe line on a semiconductor wafer generally includes: applying a mask layer to a surface of the wafer; photolithographically opening a window in the mask layer along the scribe line; etching a trench in the wafer using a chemical etchant that operates on the wafer through the window opening, wherein the chemical etchant selectively etches through crystal planes of the wafer to generate a V-groove profile associated with the trench; and cleaving the wafer along the etched trench associated with the scribe line through application of a force to one or more regions of the wafer.

Abstract: A sunshade device for a stroller includes two connecting mechanisms, a first support bracket, and a second support bracket. Each of the two connecting mechanisms includes a support member, a first pivot member, and a second pivot member. Thus, the first pivot member and the second pivot member are spaced from each other and are mounted on different sides of the support member, so that when the sunshade device is folded, the first support bracket is spaced from the second support bracket with a determined distance, thereby preventing a user's finger from being clamped and hurt by the first support bracket and the second support bracket so as to protect the user's safety.

Abstract: The present invention “Double locks for the chassis of game-bed” includes two locks on the center of the chassis of game-bed. The edges of double locks are connected to the vertical stands of game-bed via several pillars. When the bars inside the second cylinders stretch out, the chassis is locked. So, the game-bed cannot be folded if kids carelessly try to fold it; and thus the kids are safe. When users pull the handle of double locks, the bar will be forced to contract. Then, user may fold the game-bed for storage, thereby save space. The present invention promotes safety for the game-bed, is easy to use, and is a highly practical device.

Abstract: The present invention “safety device for baby's game-bed” includes a safety device installed between the stand and the joint of the game-bed. The safety device consists of a pressure-board and the elastic components installed inside the stands. When the pressure-board is not pressed, the projecting blocking-object of the elastic component forces the stand and the joint to lock together. When user presses the pressure-board, the stand bends against the joint. The safety device of present invention is designed to prevent babies from folding the game-beds carelessly, thereby prevents accidents from happening and upgrades safety for babies.

Abstract: A ratchet wheel device for a baby walker provided on the bottom surface of a chassis of the baby walker, it is comprised of a wheel rim, two transmitting gears, a transmitting member and a cover. The wheel rim is provided therein with a receiving chamber. The two transmitting gears are mounted on both sides of the receiving chamber and can fitly move therein and can be stopped by two stop portions in the receiving chamber. The transmitting member is provided in the receiving chamber and fixed on the chassis of the baby walker. A plurality of engaging teeth are provided thereon to engage with the transmitting gears. When the wheel rim is rotated to a specified direction, the two transmitting gears will not interact with the stop portions. While when it is rotated in the contrary direction, the two transmitting gears will be engaged by the transmitting member to be stopped by the stop portions and to limit rotation of the wheel rim.

Abstract: A fixing device for wheel seats of a baby stroller engaged and fixed each with/on one of the wheel seats, it has a fixing rod secured on the bottom of a foot. The fixing rod has one of its ends protruded down and out from a pipe mouth of the foot, the end is provided at least with a transverse slot. More than one push buttons are provided respectively in the transverse slots of the fixing rod and are displaceable transversely in the transverse slots. An elastic member is received in receiving holes on the push buttons. When the two push buttons are transversely pushed in the transverse slots, they are endued with elastic restoring function. When the foot with the fixing device thereon is extended in the axle hole of the wheel seat, the push buttons are appropriately pushed outwardly by the elastic member to have the bottom of the wheel seat limited by the push buttons from dropping. Assembling and dismantling of the wheel seats are very convenient.

Abstract: A fixing device for the armrest of a baby stroller including a fixing seat secured with one end thereof to the armrest and provided therein with a receiving space; an engaging device placed in the receiving space and comprised of an engaging unit and a push button. Wherein, the engaging unit is received through a connecting seat in the fixing seat, an end thereof protrudes out of an open end of the fixing seat; the bottom of the engaging unit is provided with a restorable spring. The push button is provided on the engaging unit and is placed in a slot of the fixing seat. The push button is suitably movable up and down in the slot for suitable pivotal action the engaging unit so that the engaging unit can be engaged in the engaging groove provided in the folding joint unit of the baby stroller. The armrest of the baby stroller thus can be assembled and detached in a convenient way, and can be effectively secured.

Abstract: A direction-changing and positioning device for a handle of a baby stroller including: two linkages mounted separately on the handle of the baby stroller and movable upwardly and downwardly relative to the handle; two positioning seats provided respectively on the bottoms of the two linkages and can be moved upwardly by the two linkages, an upper and a lower engaging portion being provided on the upper and the lower ends of each seat; two engaging units provided respectively on both sides of the baby stroller which each is provided with an upper and a lower engaging portion on two suitable upper and lower positions on its corresponding strut, the upper engaging portions being engageable with the upper engaging portions of the positioning seats to secure the positioning seats; wherein, when the linkages are moved upwardly to move the positioning seats upwardly, the handle is pivotable for changing direction, the lower engaging portions of the positioning seats are engaged with the lower engaging portions of th

Abstract: A wheel device for a baby walker provided on the bottom surface of a chasis of the baby walker, it is comprised of a first semi-sphere provided with a fixing portion fixed on the bottom surface of the chasis; a second semi-sphere exactly closely covering the first semi-sphere and rotating on the ground relative to the first semi-sphere, and forming with the first semi-sphere a spherical receiving space; a stop piece provided in the receiving space, a slide way with a variable width is formed between the stop piece and the inner wall of the second semi-sphere; a roller provided on the slide way and contacting the inner wall of the second semi-sphere; thereby when the wheel is rolled and accelerated to a predetermined speed, by the friction force between the roller and the stop piece and the second semi-sphere, the roller is moved toward a narrower area of the slide way, and is limited to the area between the second semi-sphere and the stop piece, so that said wheel gets the function of speed reducing as well a

Abstract: An orientation roller mechanism for baby strollers, the mechanism is mounted on the chassis of a baby stroller, by this mechanism, the baby stroller can only run forwards, the danger induced when a baby sitting in the baby stroller makes a backward moving under a bad visual condition can be avoided, and therefore safety of the baby can be increased.

Abstract: A structure of a wheel seat for a baby stroller comprising an upper rotating seat with a first slide way, a lower rotating seat with a second slide way cooperating with the first slide way and including at least a longitudinal blocking member, a fixing pin provided on the upper rotating seat and extended through the lower rotating seat and having an engaging portion on the tailing end thereof for mutual rotatable engagement of the upper rotating seat with the lower rotating seat, a direction-fixing slide sleeve slidable in the first slide way and in the second slide way and being provided at least with an engaging slit for engaging the longitudinal blocking members of the lower rotating seat to restrain the upper rotating seat and the lower rotating seat from rotation and being provided with several arciform portions on the end having the engaging slit, and an activating member provided on the direction-fixing slide sleeve for making moving of the direction-fixing slide sleeve in the first and second slide wa

Abstract: A fixing device for a wheel of a baby stroller utilizes an axle hole of the wheel formed to receive a rotation axle provided with a recessed neck. The device includes a sleeve provided in the axle hole of the wheel with a receiving chamber. The sleeve includes a pipe to receive the rotation axle. A spring loaded push button is also provided in the receiving chamber. When the push button is pushed down to force positioning rods to slide in inclined slots of the push button, the positioning rods exit a recessed neck of the pipe, and the wheel can be removed from the rotation axle. The device allows fast assembly and disassembly of the wheels so that a customer can maintain and change the wheels by himself. The device also allows the reduction of volume for packaging to increase shipping capability.

Abstract: An angular auto-adjustive skid-proof pad system on a baby stroller, which system is provided on the bottom of the chassis of the baby stroller with a plurality of skid-proof pad seats which are provided thereon with a plurality of skid-proof pads of the shapes of undulated plates, and are provided on either side thereof with a protruding axle for engaging an axle hole provided each on a side plate on the chassis, the skid-proof pad seats can thus be adjusted in angular positions in the axle holes; thereby, when the rollers of the baby stroller rush out inadvertently into a stair way and are suspended in the air, the skid-proof pads can provide a braking function and prevent the baby stroller from falling down.

Abstract: A carriage for babies to learn to walk includes an upper plate, a bedrock and supporting poles. It can slide on the ground freely. Brake and slide-resisting equipment have been installed in both sides of the bedrock. The brake and slide-resisting equipment comprises a shaft, a cylinder, and a slide-resisting plate. The shaft enables the slide-resisting plate to move freely in the cylinder. Moreover, the shaft can reach the ground and become fixed. The use of a brake and slide-resisting equipment on one side makes the carriage revolve around the slide-resisting plate shaft.

Abstract: This invention is a brake for a baby's walker. The brake's friction with the floor is increased by a slide-resisting piece attached to the braking support. It prevents the walker from sliding when the brake is against the ground. The supporting pole of the brake is extended in and out by a spring and slide mechanism. The spring and slide mechanism is located within a revolving casing. A horizontal piece on the slide is adapted to smoothly traverse the inner periphery of the casing along a helical guide. The guide forces the slide, and the brake attached to it, to move up and down as a revolving switch is turned. The guide also has a locking portion to hold the slide, and the brake, in extended position.

Abstract: An angular .[.auto-adjustive.]. .Iadd.auto-adjusting .Iaddend.skid-proof pad system on a baby .[.stroller.]. .Iadd.walker.Iaddend., which system is provided on the bottom of the chassis of the baby .[.stroller.]. .Iadd.walker .Iaddend.with a plurality of skid-proof pad seats which are provided thereon with a plurality of skid-proof pads of the shapes of undulated plates, and are provided on either side thereof with a protruding axle for engaging an axle hole provided each on a side plate on the chassis, the skid-proof pad seats can thus be adjusted in angular positions in the axle holes; thereby, when the rollers of the baby .[.stroller rush.]. .Iadd.walker move .Iaddend.out inadvertently into a stair way and are suspended in the air, the skid-proof pads can provide a braking function and prevent the baby .[.stroller.]. .Iadd.walker .Iaddend.from falling down.