Abstract: A memory stick includes a casing having a connection member at a top end thereof for connection to a personal item and an opening at a bottom end thereof, a positioning tray insertable through the opening of the casing for positioning in the casing and having an angled upper bending plate extended from a top end thereof and defining with a bottom wall thereof a clamping space and an elastically deformable recessed portion defined in the angled upper bending plate, and a flash memory detachably inserted into the clamping space of the positioning tray and held down in place by the recessed portion.

Abstract: A USB memory stick includes housing having a frame hole, a tray providing a fastening structure, and a memory attached to the tray and mounted with the tray in the housing. The memory includes a mating fastening structure fastened to the fastening structure of the tray, a stepped bottom wall formed of a plurality of steps rising one behind another, a plurality of vertical clearance compensation spring leaves respectively disposed corresponding to the steps, and a mating locating block forced into engagement with the frame hole of the housing.

Abstract: A memory stick includes a casing having a connection member at a top end thereof for connection to a personal item and an opening at a bottom end thereof, a positioning tray insertable through the opening of the casing for positioning in the casing and having an angled upper bending plate extended from a top end thereof and defining with a bottom wall thereof a clamping space and an elastically deformable recessed portion defined in the angled upper bending plate, and a flash memory detachably inserted into the clamping space of the positioning tray and held down in place by the recessed portion.

Abstract: A side-push retractable USB memory stick includes a PC board providing a data storage function, an insulative PC board holder accommodating the PC board and having a springy plate located on one lateral side thereof and a press portion outwardly protruded from the springy plate, a housing surrounding the insulative PC board holder and having a sliding slot located on one lateral side thereof for receiving the press portion and enabling the press portion to be operated by an external force to move a metal shield and a USB interface circuit of the PC board in and out of a front opening of the housing. A rear end block closed on a rear open side of the housing, and a front end block press-fitted into the front opening and defining a through hole for passing the metal shield and the USB interface circuit in and out of the housing.

Abstract: A USB memory stick includes comprises a casing comprising opposing top and bottom sides and a bottom opening in said bottom side, a PC board comprising a USB interface circuit and a memory chip package, a tray holding the PC board in the casing, a safety hook for fastening to a belt or strip-like object, and a hinge coupled between the casing and the safety hook for allowing a limited angle of rotation between the casing and the safety hook.

Abstract: A USB memory stick includes housing having a frame hole, a tray providing a fastening structure, and a memory attached to the tray and mounted with the tray in the housing. The memory includes a mating fastening structure fastened to the fastening structure of the tray, a stepped bottom wall formed of a plurality of steps rising one behind another, a plurality of vertical clearance compensation spring leaves respectively disposed corresponding to the steps, and a mating locating block forced into engagement with the frame hole of the housing.

Abstract: A USB memory stick includes a metal shell structure defining opposing top opening and bottom opening and a locating hole, a PC board formed of a USB interface circuit and a memory chip package, and a tray, which includes a support panel supporting the PC board, a clip extended from one side of the support panel and clamped on the memory chip package of the PC board, a spring plate extended from the clip and pressed on the PC board against the support panel, and an oblique retaining leaf obliquely extended from the spring plate and engaged into the locating hole of the metal shell structure.

Abstract: A method of forming a tenon on one side of a metal plate member by means of punching the wall of one side of the metal plate member with a punch or punches to form a protrusion and then punching the protrusion with a punch rod to extend the height of the protrusion and to deform the protrusion into a tubular configuration.

Abstract: A memory stick having a metal housing, a PC board, a tray carrying the PC board, a lock body, and a locking mechanism. The lock body includes a positioning block press-fitted into a top opening of the metal housing and a locating block engaged into a top notch of the metal housing and adapted for accommodating an upper part of the tray and a part of an IC package circuit of the PC board for enabling the USB interface circuit to be suspending in a bottom opening of the metal housing. The locking mechanism enabling the memory stick to be locked to an external object.

Abstract: A bookmark memory stick includes a PC board, a flat, elongated insulative holder shell having a recessed accommodation portion accommodating the PC board and a retaining hole disposed near the top end thereof, a metal cover shell surrounding the insulative holder shell and a clip, which has a transverse locating base fitted into a locating notch at the top end of the insulative holder shell, a double-bevelled clamping plate obliquely downwardly extended from the front side of the transverse locating base toward the inside of the metal cover shell and stopped against a inverted T-plate of the insulative holder shell and then curved obliquely outwardly for clamping a sheet member on the inverted T-plate, a back plate extended from the back side of the transverse locating base and inserted into the inner top side of the metal cover shell, and a hook plate obliquely extended from the back plate and engaged into the retaining hole of the insulative holder shell.

Abstract: A retractable USB memory stick includes a metal casing having a longitudinal sliding slot, first and second locating holes located on opposing ends of the longitudinal sliding slot and a hook located on the rear side and defining an access gap, a PC board having a USB plug and a memory IC board, and an insulation PC board holder holding the PC board and slidably mounted in the metal casing. The insulation PC board holder has a sliding block supported on a spring strip and inserted into the longitudinal sliding slot of the metal casing, retaining blocks protruded from the sliding block for selectively engaging the first locating hole or second locating hole to lock the insulation PC board holder to the metal casing in extended or received positions, and a latch located on the rear side and movable with the insulation PC board holder to close/open the access gap.

Abstract: A memory stick includes a -shaped metal plate member having two tenones respectively protruded from an inner wall thereof at two opposite sides and aimed at each other, each tenon being formed on the -shaped metal plate member by means of punching the inner wall of the -shaped metal plate member with a punch to form a protrusion and then punching the protrusion with a punch rod to extend the height of the protrusion and to deform the protrusion into a tubular configuration, and a casing accommodating a PC board that has a USB connector at its one end and having two pivot holders symmetrically located on two opposite sides thereof and respectively pivotally coupled to the tenones of the -shaped metal plate member for enabling the -shaped metal plate member to be turned relative to the casing to close or open the USB connector.

Abstract: A retractable USB memory stick includes a metal casing formed of a seamless flat tube having opposing front opening and rear opening, a sliding slot located on one peripheral wall thereof, and first and second locating holes located on the sliding slot, a PC board having a front USB interface circuit and a rear memory IC package, and an insulation PC board holder holding the PC board and slidably mounted in the metal casing. The insulation PC board holder has a spring strip bridged on the outside wall thereof, a sliding block located on the spring strip and forced by the spring power of the spring strip into the sliding slot of the metal casing, and a retaining block protruded from the sliding block for selectively engaging the first locating hole or second locating hole of the metal casing to lock the insulation PC board holder to the metal casing in the extended position and received position.

Abstract: A method of surface printing and electric plating, it is to perform pre-plating to form a pre-plated layer firstly on a surface of a metallic or non-metallic article to be plated, thereby the metallic or non-metallic surface will not be oxidized, and to perform printing and then electric plating to make the plated layer higher than the electric printed layer, thus an effect of 3 dimensions can be resulted; and the printing oil ink is protected in the plated layer, thereby it is not subjected to being stripped off by abrasion.