Abstract: A multifunctional rotary data memory, comprising a housing, a master control module, a memory, a first connector, and a second connector. The housing has an upper housing and lower housing. The upper housing and lower housing are movably connected and can relatively and rotatably move around a pivot shaft. The first connector is mounted on the upper housing. The second connector is mounted on the lower housing. The first connector and the second connector are both communicatively connected to the master control module. This breaks through spatial and angular limitations on the connection between an Apple device and a periphery device, is a simple apparatus for an Apple device to possess both the functions of a data line and a mobile memory, and is compact in volume and easy to carry.

Abstract: An USB plug capable of being inserted face up and face down includes a metal shell, an insulating body and conductive terminals arranged in the metal shell. The front end of the insulating body protrudes and is provided with an insertion core. The upper face and the lower face of the insertion core are respectively provided with a set of conductive terminals. Each of the conductive terminals on the upper face of the insertion core in a sequence from left to right is connected with the corresponding one of the conductive terminals on the down side of the insertion core in a sequence from right to left one by one. Both the up side and the down side of the insertion core of the USB plug can be electrically connected, so that the plug can be electrically connected effectively when being inserted in a socket either face up or face down.

Abstract: An USB plug capable of being inserted face up and face down includes a metal shell, an insulating body and conductive terminals arranged in the metal shell. The front end of the insulating body protrudes and is provided with an insertion core. The upper face and the lower face of the insertion core are respectively provided with a set of conductive terminals. Each of the conductive terminals on the upper face of the insertion core in a sequence from left to right is connected with the corresponding one of the conductive terminals on the down side of the insertion core in a sequence from right to left one by one. Both the up side and the down side of the insertion core of the USB plug can be electrically connected, so that the plug can be electrically connected effectively when being inserted in a socket either face up or face down.

Abstract: A side adjustable roller assembly for a sliding door comprises a housing containing a rotatable cam and a wheel carriage with a guide wheel mounted therein pivotally attached to the housing. The assembly is insertable into a recess in the edge of a door, being held therein by a slot in one end of the housing, and by a bend in a strip of spring steel attached to the housing at the other end which engage opposite ends of the recess, respectively. Contact of the cam surface with that of the wheel carriage controls the distance that the carriage can be pivoted into the recess by the door's weight, against the force of an associated spring urging the carriage away from the recess. The point of engagement of the cam surface with the carriage, and therefore the distance between the door's edge and the surface over which it is mounted, depends upon the degree of the cam's rotation, determined by adjustment of cam mounting trunions which can be accessed from the side of the housing.