Abstract: A toy firearm includes: a hollow firearm body; a cartridge module separably coupled in front of the firearm body to store a plurality of BB bullets to be fired; a gas discharge module to supply introduced gas to the BB bullets stored in the cartridge module by sequential control using a solenoid valve; an electrical sound module electrically connected to the gas discharge module to generate an electrical high voltage sound for a predetermined time with respect to a point in time of firing the BB bullets stored in the cartridge module; and a gas tank disposed in a grip of the firearm body to temporarily store the gas and supply the stored gas to the gas discharge module, wherein the cartridge module includes a pair of barrels arranged side by side at a predetermined angle along front and rear sides.

Abstract: A subminiature pattern projector using rotational superposition of multiple optical diffraction elements is disclosed. A three-dimensional (3D) endoscope having the pattern projector is also disclosed. The 3D endoscope has a pattern projector that forms a pattern having high density and uniformity for acquiring a 3D image by using an angle offset between two or more optical diffraction elements. The pattern projector irradiates an optical diffraction pattern for shooting the 3D image, or includes a function as illumination for illuminating a region of interest in a human body.

Abstract: A cooking appliance having a coupling structure of components to a control panel. The cooking appliance includes a main body provided with a heating unit, a control panel on at least a portion of the main body, a coupled knob unit for controlling a condition of the heating unit, the knob unit coupled to the control panel, and a bracket coupled to the knob unit to fix a coupling position of the knob unit. Accordingly, during a manufacturing process or a use process, the knob unit can be prevented from being biased with respect to the control panel in an arbitrary one direction.

Abstract: A cooking apparatus is provided. The cooking apparatus includes a main body provided with a cooking chamber, and a steam supply device generating steam to supply the steam to the cooking chamber. The steam supply device includes a water storage unit to store water, a steam generator that is supplied with water from the water storage unit to generate steam, a water supply tube to transfer water in the water storage unit to the steam generator, and a water collection tube to transfer residual water in the steam generator to the water storage unit. Accordingly, a period to put water may be increased since the residual water in the steam generator is collected.

Abstract: A cooking appliance having a coupling structure of components to a control panel. The cooking appliance includes a main body provided with a heating unit, a control panel on at least a portion of the main body, a coupled knob unit for controlling a condition of the heating unit, the knob unit coupled to the control panel, and a bracket coupled to the knob unit to fix a coupling position of the knob unit. Accordingly, during a manufacturing process or a use process, the knob unit can be prevented from being biased with respect to the control panel in an arbitrary one direction.

Abstract: A cooker capable of fixing a rail assembly to the inside of a cooking compartment by a fixing device includes a cooking compartment in which food is placed for cooking, a fixing bracket mounted at an inner wall of the cooking compartment, a rack provided so as to be withdrawn from the cooking compartment, a rail assembly mounted on the rack and enabling the rack to be inserted and withdrawn from the cooking compartment, and a locking device mounted on the rail assembly, and having one side locked with the fixing bracket such that the rail assembly is fixed without being moved inside the cooking compartment.

Abstract: A cooking apparatus is provided. The cooking apparatus includes a main body provided with a cooking chamber, and a steam supply device generating steam to supply the steam to the cooking chamber. The steam supply device includes a water storage unit to store water, a steam generator that is supplied with water from the water storage unit to generate steam, a water supply tube to transfer water in the water storage unit to the steam generator, and a water collection tube to transfer residual water in the steam generator to the water storage unit. Accordingly, a period to put water may be increased since the residual water in the steam generator is collected.

Abstract: Disclosed is a stainless steel joining method which can make a welding bead narrow and deep and prevent fatigue strength from being lowered due to thermal stress, thereby preventing deformation of a product. A stainless steel joining method comprises: a first step of inserting and disposing a thin brazing filler metal between joining surfaces of two stainless steel pieces; a second step of radiating a laser beam onto the joining surfaces to perform a welding process by a contactless laser welder; a third step of filling the brazing filler metal molten in a brazing furnace between the joining surfaces to perform a brazing process; and a fourth step of cooling the brazing filler metal filled between the joining surfaces.