A hinge device includes two rotation units and a base capable of relatively rotating; one radial side of the base is formed with an arc-shaped recess in which an axial connection part is formed, one axial side of the arc-shaped recess is formed with an action space; the rotation units are respectively disposed in the action space and the arc-shaped recess, and axial sides thereof are respectively formed a first axial connection part and a second axial connection part and an arc-shaped structure and an arc-shaped channel, each axial connection part is connected to each other for allowing the rotation units to respectively move along the action space and the arc-shaped recess for being rotated in or out of the base; the rotation units can only be in contact at the axial side for forming a sequentially rotating status but also at a radial lateral circumference for synchronously rotating.

A rotary closed-valve type vacuum suction device is mounted to a bottom of an object, and has a valve assembly, a sucker, and a valve part. The valve assembly has a top valve seat and a bottom valve seat mounted below the top valve seat. The sucker is mounted to a bottom of the valve assembly. The valve part is inserted through a valve hole of the sucker and the bottom valve seat, and is connected to the top valve seat. When one of the top valve seat and the bottom valve seat is rotated to change the relative position between the bottom valve seat and the top valve seat in a height direction of the valve assembly, the valve part switches the valve hole of the sucker between an open state and a closed state.

Embodiments relate to a cellphone self-standing device that allows any cellphone to stand in position and angles that are more suited for selfie and two way video communication. The device of this invention integrates with the cellphone such that it can be carried around easily, the same way that cellphones are; store with the cellphone in where cellphones are normally stored; and operate on demand with minimal set up, to facilitate ease of use.

The present description relates to devices that include portions that are moveable relative to one another. One example device includes a leaf spring positioned to receive forces between a first portion and a second portion. The leaf spring can extend from a first end to a second end and can define a perimeter where the first end and the second end are contained within the perimeter and the first end and the second end are not secured to either the first portion or the second portion.

A system can include a display that includes a mount; a display stand that includes a base that includes opposing sides and a platform that spans the opposing sides, an arm that extends from the base and that operatively couples to the mount, and a video cable passage that includes a side opening on one of the opposing sides of the base; and a video cable that operatively couples to the display, that is disposable at least in part in the video cable passage, and that includes a connector exposable via the side opening of the one of the opposing sides of the base of the display stand.

A service tray for use with, and attachment to, a connection box having a flange having a bolt pattern, includes an L-shaped member defining a work surface and a mounting flange at about a right angles to each other. The work surface has an upper, work surface. The mounting flange has a plurality of openings, at least some of which are aligned with the connection box flange bolt pattern. The L-shaped member has an upwardly oriented lip extending about the edges of the work surface. A portion of at least one of the mounting flange openings has opposing edges configured to receive and secure a threaded bolt. One or more mounting bolts are received in one or more of the mounting flange openings to secure the service tray to the connection box.

The present disclosure describes roof inspection devices, methods, and systems. One roof inspection device includes a pole, a camera coupled to an end of the pole and configured to capture an image of a roof, and a number of attachments coupled to the pole and configured to stabilize the pole on the roof or other elevated surface.

A device having a top half and a bottom half divided by a perforated hinge mechanism is provided. The top half may contain a graphic image and be used as a protective cover or kickstand, and the bottom half contains a reusable elastomeric adhesive. The adhesive can be on both sides of the bottom half. The device can be used to mount any flat, non-porous or semi-porous object to another flat, non-porous or semi-porous surface or object. The shape and size of the device does not affect its functionality and can therefore be modified as needed.

A system can include a display that includes a mount; a display stand that includes a base that includes opposing sides and a platform that spans the opposing sides, an arm that extends from the base and that operatively couples to the mount, and a video cable passage that includes a side opening on one of the opposing sides of the base; and a video cable that operatively couples to the display, that is disposable at least in part in the video cable passage, and that includes a connector exposable via the side opening of the one of the opposing sides of the base of the display stand.

Case accessories for portable electronic devices are disclosed. In some embodiments, a case accessory may include a base configured to sit on a working surface, a support coupled to the base and configured to support a portable electronic device in an elevated position, a rotational mechanism coupled to the support configured to allow the holder to rotate in one or more directions relative to the support, and a holder coupled to the rotational mechanism and configured to secure the portable electronic device.