Abstract: A hinge assembly includes an axel and a conversion adapter including a hollow column and a hollow protrusion pole. The hollow column communicates with the hollow protrusion pole. A pivoting element is rotatably connected to the conversion adapter, and includes a first side plate and a connection plate. A positioning pole is protruded from the first side plate. A protrusion ring and a guide pole are protruded from the connection plate. A rotation element is rotatably placed over the axel. The protrusion ring is rotatably placed over the protrusion pole. The rotation element is rotatably placed over the guide pole.

Abstract: A cover assembly includes a housing plate and a cover. The housing plate includes a first wall, a second wall, a third wall, and a fourth wall. The housing plate defines a rectangular opening. The first, second, third, and fourth walls are formed at the four edges of the rectangular opening. The housing plate defines a first positioning slot in the first wall, two second positioning slots at one end of the second wall and the third wall adjacent to the first wall, and a third positioning slot at a side of the rectangular opening. The cover includes a front end, an opposite rear end, a first locking sheet on the middle of the front end, two second locking sheets on both sides of the front end, and two third locking sheets on the inner surface of the disassembly portion and protruding from the rear end to the front end.

Abstract: A rotatable remote control is provided. The remote control includes a main body, a circuit board attached to the main body, and a rotatable body received in the main body. A plurality of first elastic conductive elements is mounted on the circuit board. The rotatable body includes a pressing projection. The remote control further includes a chip mounted on the circuit board. The chip includes a plurality of input pins and each of the input pins corresponds to a first conductive element. When one of the first conductive element is pressed by the pressing projection, the input of the input pin corresponding to the first conductive element is changed. The chip determines whether to generate a remote control signal to control an electronic device to execute a preset function according to the detected change of the input pins.

Abstract: A hinge used in a display apparatus is provided. The display apparatus includes a display unit, and a seat. The hinge is used for connected the display unit to the seat. The hinge includes a pivot rod, a first connection member, a second connection member, and a support member. The first connection member is fixed to the display unit and further connected to the pivot rod. The second connection member is connected to the support member. The second connection member is fixed to the support member and further pivotally connected to the pivot rod. The support member is fix to the seat and further pivotally connected to the pivot rod.

Abstract: An electronic device, comprising: a main body, a back cover, and a button; wherein, the main body comprises a bottom portion and a side wall extending therefrom, a first through hole is defined on the bottom portion, and a second through hole is defined in the side wall; the button comprises a base and a sliding body connected to the base which is caused to generate an elastic deformation under external force, the base is secured to the bottom portion of the main body, and the sliding portion is received in and exposed from the second through hole; the back cover includes an inner surface and a hook protruding from the inner surface, a hook portion is formed on an end of the hook away from the back cover; when the back cover is connected to the main body, the hook is passed through the first through hole, the hook portion is engaged to the base of the button; when the sliding body is pushed, it causes the base to generate the elastic deformation to make the base disengage the hook.

Abstract: An ornament attachment mechanism includes a base, a cover, and a post. The base defines a cavity, a first through hole, and a second through hole. The first through hole is coaxial with the second through hole, and the cavity communicates with the first through hole and the second through hole. The cover defines a recessed portion. The post includes a body and a head. The body passes through the second through hole and the second through hole. The head is received in the recessed portion and is retained by the base and the cover. An electronic device using the ornament attachment mechanism is also provided.

Abstract: A portable projector includes a housing, a reflecting unit, and a projecting unit. The reflecting unit includes a foldable cover rotatably hinged to the housing, and a reflector fixed on the foldable cover. The projecting unit is received in the housing, and is directed at the reflecting unit, and is configured for projecting an image to a projection screen via the image being reflected off by the reflector.

Abstract: A cover assembly includes a housing plate and a cover. The housing plate includes a first wall, a second wall, a third wall, and a fourth wall. The housing plate defines a rectangular opening. The first, second, third, and fourth walls are formed at the four edges of the rectangular opening. The housing plate defines a first positioning slot in the first wall, two second positioning slots at one end of the second wall and the third wall adjacent to the first wall, and a third positioning slot at a side of the rectangular opening. The cover includes a front end, an opposite rear end, a first locking sheet on the middle of the front end, two second locking sheets on both sides of the front end, and two third locking sheets on the inner surface of the disassembly portion and protruding from the rear end to the front end.

Abstract: An electronic device includes a main body, an earphone partitioning structure, and a cover. The main body defines an earphone housing to removably receive an earphone. The earphone partitioning structure is disposed in the earphone housing and includes a first limiting wall and a second limiting wall. The first and the second limiting walls are configured to restrict movement of the earphone. The cover is detachably coupled with the main body for covering and uncovering the earphone housing.

Abstract: A battery casing used in an electrical device includes a box body, an electric sheet, a resilient electric portion and a switch apparatus. The box body for receiving a battery has a first sidewall and a second sidewall opposite to the first sidewall. The electric sheet mounted on an inner surface of the first sidewall is capable of electrically connecting with a first electrode of the battery. The resilient electric portion mounted on an inner surface of the second sidewall is capable of electrically connecting with a second electrode of the battery, and compressible to generate restoring forces. The switch apparatus mounted on an outer side of the first sidewall switches between a first position and a second position. When the switch apparatus is in the first position, the first electrode of the battery is detached from the electric sheet.

Abstract: A toy vehicle includes a chassis, at least one light guide plate, at least one sensor unit and a driving unit. The at least one light guide plate includes a first portion and a second portion and is embedded into the chassis by the first portion. The at least one sensor unit is attached on the second portion of the at least one light guide plate and includes an emitter for emitting light, and a detector for receiving the reflected light and sending a signal according to a propagation delay of a light emitted from the emitter and received by the detector. The driving unit is configured for controlling the motion of the toy vehicle according to the signal outputted from the at least one sensor unit.

Abstract: A moveable electronic toy includes a base, a base cover, two wheels and two wheel covers. The base cover is fixedly mounted on the base. The two wheels are rotatably connected to the base and exposed from the base cover. The two wheel covers is detachably coupled to the base cover and is configured for covering the wheels.

Abstract: An exemplary faceplate comprises a panel, a guiding ring and two hooks. The panel includes an inner surface and an opposite outer surface, on which a number of passageways are defined running through the inner and outer surface. The guiding ring is mounted on the inner surface of the panel around a corresponding passageway of the panel. The guiding ring defines a housing room therein that is aligned with and communicates with the corresponding passageway of the panel. Two hooks are separately mounted on the inner surface of the panel and being respectively adjacent to the guiding ring, and each hook includes a clasp formed on an end thereof and the clasp protrudes beyond the guiding ring. The height of the each hook with respect to the inner surface of the panel is higher than that of the adjacent guiding ring with respect to the inner surface.

Abstract: A fastener is for fastening wires in an electrical device. The fastener includes a base board and a catch. The base board is connected to the electrical device. The catch extends upwards from the base board. The catch includes a supporting portion extending upwards from the base board, a main portion extending from the supporting portion and above the base board, and a restricting portion extending downwards from the main portion. A vertical distance between the restricting portion and the base board is smaller than a vertical distance between the main portion and the base board. A side-wall of an electrical device using the fastener is also provided.

Abstract: Methods for treating landfill leachate taught herein comprise: (a) coagulatively settling leachate; (b) filtering the resultant supernatant liquid through multistage cartridges; (c) filtering the filtered liquid by reverse osmosis; and (d) treating the resultant liquid with chlorine-based oxidant. These methods provide the advantages of efficient wastewater treatment, compact equipment size, short process flow, and low startup and operational costs.

Abstract: The present invention provides cooling sheets for application to an extremity of a mammal, and methods for making and using such cooling sheets.

Abstract: A method of producing a homogenous population of homozygous stem (HS) cells pre-selected for immunotype and/or genotype from donor cells is described herein. The invention relates to methods of using immunohistocompatible HS cells for diagnosis, therapeutic and cosmetic transplantation, and the treatment of various genetic diseases, neurodegenerative diseases, traumatic injuries and cancer. The invention further relates to methods for using histocompatible HS stem cells pre-selected for a non-disease genotype for prophylactic and therapeutic intervention including, but not limited to, therapeutic and cosmetic transplantation, and the treatment of various genetic diseases, neurodegenerative diseases, and cancer.

Abstract: Methods for treating landfill leachate taught herein comprise: (a) coagulatively settling leachate; (b) filtering the resultant supernatant liquid through multistage cartridges; (c) filtering the filtered liquid by reverse osmosis; and (d) treating the resultant liquid with chlorine-based oxidant. These methods provide the advantages of efficient wastewater treatment, compact equipment size, short process flow, and low startup and operational costs.