Abstract: A clock oscillator, a clock oscillator production method and use method, and a chip including the clock oscillator are provided. The clock oscillator includes a resonator, a shock-absorbing material layer, and a base, and at least a part of the shock-absorbing material layer is located between the resonator and the base. In the clock oscillator, the shock-absorbing material layer is added between the resonator and the base, and the shock-absorbing material layer can effectively prevent a mechanical wave from being conducted between the base and the resonator, so that the resonator is protected from external vibration. This can ensure, when there is external vibration, that an output frequency of the resonator is not deteriorated and improve shock absorption performance of the clock oscillator.

Abstract: A method for regulating an unmanned aerial vehicle (UAV) includes receiving a UAV identifier and one or more types of contextual information broadcasted by the UAV. The UAV identifier uniquely identifies the UAV from other UAVs. The one or more types of contextual information includes at least geographical information of the UAV. The method further includes authenticating, via an authentication device, an identity of the UAV based on the UAV identifier to determine whether the UAV is authorized for operation, and transmitting a signal to a remote device in response to determining whether the UAV is authorized for operation.

Abstract: The present application a model changing method and a battery tray. The model changing method includes: limiting a limited member by a pair of limiting assemblies, where each of the limiting assemblies is provided with a first limiting surface and a second limiting surface; disposing two first limiting surfaces of the pair of limiting assemblies opposite each other to form a first accommodating cavity; and disposing two second limiting surfaces of the pair of limiting assemblies opposite each other to form a second accommodating cavity, where a length of the first accommodating cavity is not equal to that of the second accommodating cavity.

Abstract: This application discloses an adapter assembly and an optical communications device, and belongs to the field of connector technologies. The adapter assembly is configured to be installed on a hole of a panel, and the adapter assembly includes: an MT/MPO adapter, where the MT/MPO adapter includes a flange plate, an MT port, and an MPO port, the MT port and the MPO port are respectively located on two sides of the flange plate in a thickness direction, and the MPO port is configured to be connected to an MPO plug; and an MT plug, where the MT plug includes an MT optical fiber and an MT clamp that are connected, and the MT plug is connected to the MT port. The flange plate is made of conductive plastic. This application can shield an electromagnetic wave in the optical communications device.

Abstract: A clock oscillator, a clock oscillator production method and use method, and a chip including the clock oscillator are provided. The clock oscillator includes a resonator, a shock-absorbing material layer, and a base, and at least a part of the shock-absorbing material layer is located between the resonator and the base. In the clock oscillator, the shock-absorbing material layer is added between the resonator and the base, and the shock-absorbing material layer can effectively prevent a mechanical wave from being conducted between the base and the resonator, so that the resonator is protected from external vibration. This can ensure, when there is external vibration, that an output frequency of the resonator is not deteriorated and improve shock absorption performance of the clock oscillator.

Abstract: A clock oscillator includes a first resonator, a second resonator, and a frequency synthesis module, where an output frequency of the first resonator is higher than an output frequency of the second resonator, the frequency synthesis module is configured to generate a synthesis frequency based on the output frequency of the first resonator and the output frequency of the second resonator, and the synthesis frequency is used as a clock frequency output by the clock oscillator. The clock oscillator uses both of the two resonators with the different output frequencies as clock signal sources, and generates a synthesized clock signal by using the frequency synthesis module.

Abstract: A database application may receive a database query to retrieve a relation with date effective information stored by a relational database, and send a database result having the date effective information. The database application may comprise a data mapping component to retrieve a relation definition for the relation from metadata associated with the relation, the relation definition having a relation variable with a set of attributes including multiple date effective attributes, the relation definition having a definition for an alternate key formed from a composite of a date effective attribute and one other attribute from the set of attributes, and a data access component to generate the relation with the date effective information using the alternate key, the relation having a set of one or more tuples, with each tuple having one or more attribute values for corresponding date effective attributes of the relation. Other embodiments are described and claimed.

Abstract: The child resistant gas lighter of the invention has an ignition sleeve having a slit defined therein and an integrated safety cap having a press surface, an opposite slide surface, a direction bar formed on the slide surface which is inserted in the slit and is able to make the safety cap slidable in the slit. In use, a user has to move the safety cap against a bias spring by his thumb until the safety cap is no longer blocked by a top surface of a flame cover and then press down the safety cap. The invention is hard for children to get understand how to ignition thus making it safer for children, and needs a smaller pressing force thus making the gas lighter more adult user friendly without sacrificing child resistance.

Abstract: A flint wheel lighter with a safety device, comprises a casing, a fuel container disposed in the casing, a vent assembly, an ignition assembly, and a windproof hood above the fuel container, the ignition assembly is arranged on the side opposite to the windproof hood. Said ignition assembly comprises a press plate, a flint, and a flint wheel. A bent safety rod rotatable with the flint wheel is disposed on the side surface of said flint wheel, with both ends of two sections of said bent safety rods protruding out of the rim of the flint wheel. In a safe mode, the end of one section butts against the inner surface of the top cover of the windproof hood, and the end of the other section lies over the flint wheel. The flint wheel lighter with safety rod provided by the present invention can effectively control the operation of the flint wheel by the safety rod, so as to prevent fire disasters and accidents caused by children playing with the flint wheel.

Abstract: Buckle assemblies and associated connectors for use with child seats and other personal restraint systems are disclosed herein. A restraint system configured in accordance with one embodiment of the invention includes shoulder/lap webs which are slideably received in corresponding web connectors. Each of the web connectors includes a tongue portion that is configured to releasably interlock with the other tongue portion before the interlocking tongue portions are simultaneously inserted into the buckle assembly as a unit. The buckle assembly is configured to receive and engage the interlocking tongue portions only when the tongue portions have been properly mated together prior to insertion into the buckle assembly.

Abstract: A child resistant lighter has a hollow handle, a barrel mounted in the handle, a fuel tank and a piezoelectric unit contained in the handle, an ignition device, and a safe device. A user is able to hold the handle and then pull a slidable button of the safe device with his forefinger and push an ignition button of the ignition device with his thumb at the same time. The safe lighter is able to both lower a possibility of unintentional ignition by child and protect a skin of thumb of a user.

Abstract: A child resistant flint lighter having a body on which a pair of brackets are formed, a pivotal means being of bar-shaped and installed on the pair of brackets, a free wheel rotatably installed on the pivotal means, a flint wheel covering on the pivotal means, a fixed wheel covering on the pivotal means and fixed with respect to the flint wheel, a flint with respect of which the flint wheel and fixed wheel is able to rotate, and a flint spring pressing the flint on the flint wheel. In this invention, there is only one bar-shaped pivotal means needed in stead of the complex shafts in the conventional lighter. It will significantly reduce the complexity and time of manufacturing and assembling the pivotal means to the lighter.

Abstract: A disposable gas lighter with advertising flashlight. The lighter has a flashlight unit having a power source, a lamp electrically connected to the power source, a push-button switch to turn on the lamp when pressed down, a sleeve installed in a recess of the body which contains the lamp in one end thereof, a film bearing advertising information and placed in around a middle portion of the sleeve, and a convex contained in a free end of the sleeve. The convex is located in an opening defined on the surface of the body. When the push-button switch is pressed down, the flashlight unit is able to give off a light beam. When the beam meets a plane in front of the gas lighter, a project of the film comes into being. Viewers then are able to watch the advertising information of the film with the project.

Abstract: A child resistant lighter has a handle, a barrel, a fuel tank, a gas release nozzle, a piezoelectric unit, an ignition means, a lever, a flame nozzle, a fuel conveying hose connecting the flame nozzle and the gas release nozzle, and a safe means having a slidable button, a pivot, an arm rotatably mounted on the pivot and having a hole surrounding the transmission pole, and a second spring. The ignition means further has a transmission pole, a first spring, a first protrusion, and a second protrusion. One end of the transmission pole connects to the lever and the other end thereof meets the triggering button of the piezoelectric unit. The safe lighter is able to both lower a possibility of unintentional ignition by child and protect a skin of thumb of a user.

Abstract: The invention provides a lighter with a safety switch, comprising: a housing, a fuel container within the housing, a piezoelectric assembly, and a vent assembly. The piezoelectric assembly comprises a piezoelectric element, a snap, as well as a upper and lower push rods arranged between the snap and piezoelectric element. The lower part of the upper push rod and the upper part of the lower push rod are connected in a manner that they can deviate from the centerline of the upper and lower push rods toward one side. Thus, the upper and lower push rods can bend to one side at the joint during the operation of the snap. The lighter further comprises a safety switch, which can prevent the upper and lower push rods from bending.