A mounting plate assembly has a mounting plate for mounting a light fixture in holes of different diameters and wherein a guide rail assembly is secured to a rear face of the mounting plate on opposed sides of an aperture. Each guide rail assembly has a novel displaceable spring clamp structure having to a displaceable base coupled for sliding displacement along a guide rail assembly. Spring biasing elements are provided between the displaceable base and the guide rail assembly to urge a bottom face of the displaceable base against a flat top surface of a mounting base to which the guide rails are secured. A retention formation is provided in the bottom surface of the displaceable base for retention coupling with a selected one of space-apart engageable retainers immovably secured to the flat top surface of the mounting base and aligned with the retention formation to arrest the displaceable base at a desired location to position the spring clamp structures at a desired location with respect to the size of a hole formed in the sheet material and to which a light fixture is to be secured.

A stand (100) is disclosed. The stand (100) may include a first connecting component and a second connecting component. The first connecting component may include at least one fixing element and a chamber. The chamber may have an opening. The second connecting component may include an insertion portion including at least one fixing element and a chamber. The chamber may have an opening. When the insertion portion of the second connecting component is inserted, along an axis in an insertion direction, into the chamber through the opening, the fixing element in the first connecting component may work in pairs with the insertion portion to cause the first connecting component to be connected with the second connecting component.

A magnetic template with adjustable magnetic force is provided. The magnetic template is applied to a display device. The display device can be fixed on a plane by the magnetic template, wherein the magnetic template includes an assembly shell and an adjustment element. A magnetic element is arranged inside the assembly shell. The adjustment element is arranged in the assembly shell and is configured to adjust the magnetic force of the magnetic element relative to the plane or adjust the magnetic force of the magnetic element.

An apparatus for use with an electronic communication device having a camera to take a selfie picture or video. In one embodiment, the apparatus comprises a mirror comprising a mirror surface. The apparatus further comprises a fastener directly connected to the mirror surface. The fastener is adapted to receive the electronic communication device to position the camera in front of the mirror surface. The apparatus may further comprise a plurality of light sources and a control circuit adapted to activate the plurality of light sources.

An apparatus for use with an electronic communication device having a camera to take a selfie picture or video. In one embodiment, the apparatus comprises a mirror comprising a mirror surface. The apparatus further comprises a fastener directly connected to the mirror surface. The fastener is adapted to receive the electronic communication device to position the camera in front of the mirror surface. The apparatus may further comprise a plurality of light sources and a control circuit adapted to activate the plurality of light sources.

Apparatuses for clamping rails and methods for rail installation are provided. A clamp apparatus may include a first grip body that includes a first groove and a second grip body that includes a second groove. Alignment of the first groove and the second groove may form a groove pair configured to couple to one or more flanges of a rail. The clamp apparatus may further include a fastener, as well as a flange spring that extends from the first grip body and that flexibly engages with the second grip body. Flexing the flange spring may allow the first grip body to move away from the second grip body along a length of the fastener.

Apparatuses for clamping rails and methods for rail installation are provided. A clamp apparatus may include a first grip body that includes a first groove and a second grip body that includes a second groove. Alignment of the first groove and the second groove may form a groove pair configured to couple to one or more flanges of a rail. The clamp apparatus may further include a fastener, as well as a flange spring that extends from the first grip body and that flexibly engages with the second grip body. Flexing the flange spring may allow the first grip body to move away from the second grip body along a length of the fastener.

A bracket is provided. The bracket includes a fixing seat and a holding seat. The fixing seat has a first extending direction and includes at least one first contacting end surface, and a first angle is contained between the at least one first contacting end surface and the first extending direction. The holding seat is detachably connected to the fixing seat with a bend angle to form a bend structure, and the holding seat includes at least one second contacting end surface corresponding to the at least one first contacting end surface. The at least one first contacting end surface and the at least one second contacting end surface are located near or at a bend portion of the bend structure.

A bracket is provided. The bracket includes a fixing seat and a holding seat. The fixing seat has a first extending direction and includes at least one first contacting end surface, and a first angle is contained between the at least one first contacting end surface and the first extending direction. The holding seat is detachably connected to the fixing seat with a bend angle to form a bend structure, and the holding seat includes at least one second contacting end surface corresponding to the at least one first contacting end surface. The at least one first contacting end surface and the at least one second contacting end surface are located near or at a bend portion of the bend structure.

A handheld electronic device case with quick-release anchoring capability includes a device case main body operable to engage a handheld electronic device and provide a protective cover therefor. A vacuum formation-and-release actuator is operable to establish a releasable vacuum connection between a rear surface of the handheld device, or a base of the case main body, or or an independent base of a universal vacuum connector incorporating the vacuum formation-and-release actuator, and a reference surface in order to detachably mount the handheld device to the reference surface. The releasable vacuum connection is provided by a controlled pressure zone that maintains a negative pressure differential relative to an external ambient pressure. The releasable vacuum connection is releasable by virtue of the vacuum formation-and-release actuator being movable in a manner that vents the controlled pressure zone.