A hinge module includes a base, a torsional force providing structure, two axles, two brackets, and at least one fixing component. The base has at least one first concave. The torsional force providing structure is disposed in the base and has two torsional force providing portions. The two axles penetrate the two torsional force providing portions respectively. The two brackets are connected to the two axles respectively. The fixing component is disposed in the first concave and abuts the torsional force providing structure, such that the torsional force providing structure is fixed to the base. In addition, an electronic device including the hinge module is also provided.

Solar panel assemblies and wall sections using such assemblies are described. In one solar panel assembly, there is a mounting post and three or more triangular shaped panels. Each triangular shaped panel is a solar panel responsive to a first spectrum of light and transparent to a second spectrum of light. The solar panel assembly also includes hinges which connect the triangular shaped panels to the mounting post. The at least three triangular shaped panels can move between a flat configuration and an inverted pyramid configuration. In a further embodiment of the solar panel assembly, the triangular shaped panels form a first solar panel layer, and the assembly also includes one or more additional solar panel layers. Each of the additional solar panel layers being responsive to an associated spectrum of light.

The present disclosure relates to a low friction bearing liner for a solenoid that may include a core layer, a first outer layer overlying a first surface of the core layer, a second outer layer overlying the first outer layer, a first inner layer overlying a second surface of the core layer that is opposite of the first surface of the core layer, and a second inner layer overlying the first inner layer. The first outer layer and the first inner layer may include a fluoropolymer material and may have a melt flow rate of at least about 2 g/10 min at 372 C. The second outer layer and the second inner layer may include a fluoropolymer material distinct from the fluoropolymer material of the first outer layer and may have a surface coefficient of friction of not greater than about 0.2.

A gun tube for a downhole perforating gun assembly includes a body, a first end, and a second end. A motor is directly or indirectly attached to one or both of the ends and is configured to rotate the gun tube around its longitudinal axis in order to position shape charges in the gun tube in a desired position before firing the shape charges. A sensor may be on the gun tube, a sub-assembly, or an outer casing to detect the relative position of the shape charges and a signal including the position of the shape charges could be sent to a human or machine operator.

comprising sliding rails includes a base, a connecting piece, a plurality of elastic pieces and a slider. The connecting piece passes through the elastic pieces and the slider, and is fixedly mounted on the base. The base has a pair of sliding chutes and a plurality of block pieces. The slider has a pair of sliding strips and a plurality of plates. The elastic pieces are located between the block pieces and the plates. The slider is accommodated in the sliding chutes via the sliding strips and slides on the base along the sliding chutes. After the slider slides for a certain distance relative to the base, the elastic pieces makes the slider to back to the original position.

A hinge assembly and an electronic device using the hinge assembly are provided. The hinge assembly includes a pair of gear brackets coaxially staggered in an axial direction, wherein each gear bracket has a plate portion and an arc portion, and the arc portion has an inner gear; a shaft holder, which is provided between the arc portion of the gear bracket, wherein the shaft holder has a pair of first fixing holes; a pair of gear shafts, which passes through the first fixing hole and is fixed to the shaft holder in parallel to the axial direction, each of the gear shafts has an outer gear portion, the outer gear portion has an outer gear, and the outer gear and the inner gear of the arc portion are engaged with each other; and a pair of torque elements, which are respectively sleeved on opposite ends of the gear shaft; a plurality of gears, which are sleeved on the ends of the gear shaft in a one-to-one manner, and the gears disposed on the same side of the gear shaft are engaged with each other.

A mounting system for mounting an element to a surface includes a mounting post having a base configured for mounting to a surface. The mounting post is threaded on an outer surface. A mounting plate is configured for being secured to the element to be mounted and has a center opening for receiving the mounting post so that the mounting plate is freely movable along the mounting post. An adjustment plate includes a threaded opening to receive the mounting post. The adjustment plate is configured to incrementally rotate on the threaded mounting post for adjusting the position of the adjustment plate along the mounting post and with respect to the surface. The adjustment plate is configured for being fixed to the mounting plate at a plurality of incremental positions of the adjustment plate to secure the mounting plate at a selected position along the mounting post and thereby adjust the distance between the surface and mounted element.

A mounting system for mounting an element to a surface includes a mounting element having a base and a threaded shaft extending from the base along an axis. The base is configured for mounting to a surface. An incremental nut rotates on the threaded shaft and moves up and down on the shaft. A fitting is coupled with the incremental nut and the fitting is further configured for coupling with an element to mount the element to a surface at a selected height above the surface. Apertures are formed in the incremental nut and fitting and the apertures of the incremental nut aperture and fitting are aligned at a plurality of rotational positions of the incremental nut along the threaded shaft for adjusting the height of the nut and fitting. In one embodiment the threaded shaft includes an aperture that is aligned with the incremental nut apertures for locking the nut at a selected height.

According to an embodiment of the present disclosure, an electronic device may comprise a first housing including a first surface and a second surface facing in a direction opposite the first surface, a second housing including a third surface and a fourth surface facing in a direction opposite the third surface, a hinge disposed between the first housing and the second housing configured to provide rotational motion between the first housing and the second housing, and a flexible display disposed from the first surface of the first housing across the hinge to the third surface of the second housing, at least part of the flexible display configured to form a curved surface as the hinge structure is folded, wherein the hinge may include dual-axis hinges configured to provide a first rotational axis allowing the first housing to rotate about the second housing and a second rotational axis allowing the second housing to rotate about the first housing and slides coupled with the first housing and the second housing and configured to provide sliding motion perpendicular to a lengthwise direction of the first housing and the second housing.

A bearing assembly may include a first bearing ring, a second bearing ring, and at least one row of rolling elements having a plurality of rolling elements that are disposed so as to be capable of rolling on a first raceway of the first bearing ring and on a second raceway of the second bearing ring. At least one hydrostatically supported first sliding bearing segment may be disposed on the first bearing ring. Further, the hydrostatically supported first sliding bearing segment may interact with a first bearing face that is disposed on the second bearing ring. The hydrostatically supported first sliding bearing segment may be mounted so as to be movable in a movement direction that is perpendicular to the first bearing face.