Abstract: An electronic device including a metal casing and at least one antenna module is provided. The metal casing includes at least one window. The at least one antenna module is disposed in the at least one window. The at least one antenna module includes a first radiator and a second radiator. The first radiator includes a feeding end, a first ground end joined to the metal casing, a second ground end, a first portion extending from the feeding end to the first ground end, and a second portion extending from the feeding end to the second ground end. A first coupling gap is between the second radiator and the first portion. A second coupling gap is between at least part of the second radiator and the metal casing, and the second radiator includes a third ground end joined to the metal casing.

Abstract: A rolling element chain is applied to retain and arrange multiple rollers at intervals in a line and has a belt assembly and multiple clamping assemblies. The rollers are cylinders mounted parallelly in the rolling element chain. The belt assembly is resilient and has two parallel bars. The clamping assemblies are formed in pairs between the parallel bars to form multiple roller holes on the belt assembly and each clamping assembly has multiple clamping protrusions. The clamping protrusions of each clamping assembly are formed in a line between the parallel bars and alternately protrude oppositely away from the belt assembly and together hold one corresponding roller in the belt assembly. Each clamping protrusion has a roller surface and at least one apex. The at least one apex is formed on and protrudes from the roller surface, thereby, reduces contact area between the clamping protrusions and the rollers.

Abstract: This invention pertains to an improved artificial shrub or tree and the method for constructing same. The invention improves upon all prior art artificial shrubs or trees by providing for a marketedly authentic series of branches which extend from the trunk or main body of the growth and improves upon all prior art structures through the use of an intermediate adapter shaped in the form of a branch which has its thickest end extending from the trunk and which becomes increasingly thinner as it approaches the cantilever end thereof. The adapter produces an authentic branch appearance in comparison to prior art branches which generally have little if any diminishing thickness extending from the supporting end and which are simply bluntly stuck into a bore in the trunk. The method pertains to an economical and efficient sequence of steps for producing aforesaid artificial shrub or tree.

Abstract: This invention pertains to an improved artificial shrub or tree and the method for constructing same. The invention improves upon all prior art artificial shrubs or trees by providing for a marketedly authentic series of branches which extend from the trunk or main body of the growth and improves upon all prior art structures through the use of an intermediate adapter shaped in the form of a branch which has its thickest end extending from the trunk and which becomes increasingly thinner as it approaches the cantilever end thereof. The adapter produces an authentic branch appearance in comparison to prior art branches which generally have little if any diminishing thickness extending from the supporting end and which are simply bluntly stuck into a bore in the trunk. The method pertains to an economical and efficient sequence of steps for producing aforesaid artificial shrub or tree.