Abstract: A surface processing method for a high hardness and abrasion resistant zinc alloy surface of imitation plating hexavalent chromium, includes following steps. Perform polishing for surface of zinc alloy workpiece, and leave it to dry; place the dried up workpiece into Hydrofluoric Acid solution to raise adhesion; wash the activated workpiece clean with pure water, and then place it in a silane oxide solution, to process it into silane conversion film; place the workpiece into an electrophoresis solution to perform electrophoresis, to achieve an electrophoresis application layer; use an UF solution to wash the workpiece; perform pre-drying for the workpiece; perform UV curing for the workpiece; hang the workpiece in a PVD furnace, perform sputtering of chromium, to form a metal-ceramic composite film; and perform PVD on surface of the workpiece, to deposit a layer of transparent DLC film on the workpiece.

Abstract: A surface processing method for a high hardness and abrasion resistant zinc alloy surface of imitation plating hexavalent chromium, includes following steps. Perform polishing for surface of zinc alloy workpiece, and leave it to dry; place the dried up workpiece into Hydrofluoric Acid solution to raise adhesion; wash the activated workpiece clean with pure water, and then place it in a silane oxide solution, to process it into silane conversion film; place the workpiece into an electrophoresis solution to perform electrophoresis, to achieve an electrophoresis application layer; use an UF solution to wash the workpiece; perform pre-drying for the workpiece; perform UV curing for the workpiece ; hang the workpiece in a PVD furnace, perform sputtering of chromium, to form a metal-ceramic composite film; and perform PVD on surface of the workpiece, to deposit a layer of transparent DLC film on the workpiece.

Abstract: A transformer capable of adjusting its height is provided. The transformer is formed on a circuit board having a receiving hole. The transformer comprises a winding module, two magnetic core modules, a plurality of pins and a plurality of supporting bulges. The winding module comprises a winding baseboard and a winding pillar where a winding structure is formed thereon. The winding pillar is received in the receiving hole. The winding baseboard further comprises a corresponding surface heading to the circuit board. The magnetic core modules contact and hold the winding module. The pins are formed on the edge of the to winding baseboard to be connected to the circuit board around the receiving hole. The supporting bulges are formed between the corresponding surface and the circuit board, wherein the height of the corresponding surface relative to the circuit board is adjusted according to the supporting bulges.

Abstract: A transformer capable of maintaining its height is provided. The transformer is formed on a circuit board having a receiving hole. The transformer comprises a winding module, two magnetic core modules contacting and holding the winding module, a plurality of pins and at least one supporting means. The winding module comprises a winding baseboard and a winding pillar where a winding structure is formed thereon. The winding pillar is received in the receiving hole. Each of the pins comprises a first bent part separating the corresponding pin into a first portion connected to the winding baseboard and a second portion connected to the circuit board around the receiving hole. The supporting means is formed between the first portion of at least one of the pins and the circuit board to contact the first portion and the circuit board to maintain the distance between them.

Abstract: A transformer capable of adjusting its height is provided. The transformer is formed on a circuit board having a receiving hole. The transformer comprises a winding module, two magnetic core modules, a plurality of pins and a plurality of supporting bulges. The winding module comprises a winding baseboard and a winding pillar where a winding structure is formed thereon. The winding pillar is received in the receiving hole. The winding baseboard further comprises a corresponding surface heading to the circuit board. The magnetic core modules contact and hold the winding module. The pins are formed on the edge of the to winding baseboard to be connected to the circuit board around the receiving hole. The supporting bulges are formed between the corresponding surface and the circuit board, wherein the height of the corresponding surface relative to the circuit board is adjusted according to the supporting bulges.

Abstract: A transformer capable of maintaining its height is provided. The transformer is formed on a circuit board having a receiving hole. The transformer comprises a winding module, two magnetic core modules contacting and holding the winding module, a plurality of pins and at least one supporting means. The winding module comprises a winding baseboard and a winding pillar where a winding structure is formed thereon. The winding pillar is received in the receiving hole. Each of the pins comprises a first bent part separating the corresponding pin into a first portion connected to the winding baseboard and a second portion connected to the circuit board around the receiving hole. The supporting means is formed between the first portion of at least one of the pins and the circuit board to contact the first portion and the circuit board to maintain the distance between them.

Abstract: A resettable combination lock includes two rows of main buttons, and rotary resetting buttons in a rear indoor portion, which are respectively connected to the main buttons for causing angular displacement of the main buttons with; each main button includes a stick formed with first and second trenches, which face opposite directions, and are different distances from a rear end of the stick; the sticks pass through two slots of a plate such that linear displacement of the plate will be prevented when the main buttons are not depressed exactly according to the combination; the lock can be reset in respect of the combination by means of turning the rotary resetting buttons one hundred and eighty degrees to change the orientation of the trenches of the sticks; the lock is equipped with several telescopic connecting elements therein so as to be adaptable to doors of different thicknesses.

Abstract: A resettable combination lock includes two rows of main buttons, and rotary resetting buttons in a rear indoor portion, which are respectively connected to the main buttons for causing angular displacement of the main buttons with; each main button includes a stick formed with first and second trenches, which face opposite directions, and are different distances from a rear end of the stick; the sticks pass through two slots of a plate such that linear displacement of the plate will be prevented when the main buttons are not depressed exactly according to the combination; the lock can be reset in respect of the combination by turning the rotary resetting buttons one hundred and eighty degrees to change the orientation of the trenches of the sticks; the lock is equipped with several telescopic connecting elements therein so as to be adaptable to doors of different thicknesses.

Abstract: A combination lock is provided, each of buttons of which has to be pressed respective correct numbers of times (including zero time) for unlocking the lock, therefore there is wider variety of different unlocking combinations with limited numbers of buttons, preventing unauthorized persons from easily guessing the current unlocking combination. The combination lock is made such that a knob connected thereto will be, when operated, only capable of turning in an idle manner without causing a dead bolt to disengage a door equipped with the lock unless all numbered buttons of the lock are correctly pressed according to the current unlocking combination, preventing unauthorized persons from succeeding in unlocking the door by means of turning the knob violently.

Abstract: A reversible ratchet wrench includes a casing fastened to a tool handle to hold a tool bit holder shank and a tool bit at the shank, a forward control ratchet wheel and a backward control ratchet wheel concentrically mounted in the casing and supported on a respective spring means, a stop control ratchet wheel coupled to the tool bit holder shank for synchronous motion and forced by spring means into engagement with the forward control ratchet wheel and the backward control ratchet wheel, and a rotary control knob mounted on the casing and turned between a first position where the stop control ratchet wheel is maintained meshed with the forward control ratchet wheel and the backward control ratchet wheel, a second position where the forward control ratchet wheel is disengaged from the stop control ratchet wheel for enabling the tool bit holder shank to be rotated with the stop control ratchet wheel in one direction, and a third position where the backward control ratchet wheel is disengaged from the stop cont

Abstract: A numeral lock with a resettable feature comprises an engaging plate separably engaging a plurality of locking pins. The locking pins each have a first engaging protrusion, which will block the engaging plate from moving for the lock to be locked. When facing in a first direction, such first engaging protrusions have to be separated from the engaging plate by depressing related locking pins for the numeral lock to be unlocked. The locking pins each connects to a respective one of a plurality of shaped holes of a sliding plate. The shape holes each has a circular hole portion and an elongated hole portion. The locking pins can be rotated when passing through the circular hole portions, and cannot be rotated when passing through the elongated hole portions. The sliding plate is moved so that the locking pins pass through either the circular hole portions or the elongated hole portions thereof.

Abstract: An antitheft device for attachment to a steering wheel of an automobile comprising an elongated body member having two parallel passageways extending in a longitudinal direction. A first hook is secured to the body member for engagement with a portion of the steering wheel. The first hook engages the wheel from the inside of the rim, with the body member extending outward beyond the periphery of the steering wheel, an elongated rod member, adapted to move in telescopic fashion in one of two passageways formed in the body member, and extending longitudinally therein. A second hook, secured to the rod member, engages the inside portion of the steering wheel at a point diametrically opposed to that of the first hook. A second elongated rod member is adapted to extend in telescopic fashion in a direction opposite to that of the other rod member.

Abstract: A tomographic flow imaging system comprising three or more capacitance electrodes positioned around a pipe through which a flow to be monitored passes. The capacitance between each pair of the electrodes is measured, and an output is derived from the measured capacitances which is representative of the distribution of material within the pipe. A predetermined voltage signal is applied to one electrode at a time, and the electrodes other than said one electrode are connected to sources of equal fixed potential. The capacitance of each pair of electrodes is measured by measuring charge flowing between the said other electrode of the pair and the source of potential to which it is connected.

Abstract: A power transmission mechanism for a motorized hand tool, comprising a socket, a first spring set in said socket, a first rotary member inserted in said socket and stopped against said first spring, a revolving shaft inserted through said first rotary member, said first spring and said socket and connected to a power unit, a second rotary member inserted in said first rotary member, a cap attached to said first rotary member at an opposite end, and a second spring retained between said second rotary member and said cap, wherein said gap and said first rotary member are forced to move backwards toward said socket, when the resisting force which acts onto said tool surpasses the driving force from said revolving shaft, causing said second rotary member to disconnect from said first rotary member and said revolving shaft.

Abstract: An antitheft device for attachment to a steering wheel of an automobile comprising an elongated body member having two parallel passageways extending along an axis therein, first hook means secured to the body member for engagement with a portion of the steering wheel wherein the first hook means engage the wheel from the inside thereof with the body member extending outward beyond the periphery of the steering wheel, a first elongated rod member adapted to move in telescopic fashion in one of the passageways of the body member along the axis, second hook means secured to the first rod member for engaging the inside portion of the steering wheel diametrically opposed to the first hook means, a second elongated rod member adapted to move in telescopic fashion in a direction reverse to the first rod member, and means associated with the body member engaging the rods within the passageways that allows the rod members to extend with respect to the body member to be locked at any of a plurality of positions and ha