A supporting device including an installation assembly; a first supporting arm assembly having a longitudinal direction, a first end, and a second end; a switching bracket; a bearing unit pivotally connected to the switching bracket; and at least one gas spring is provided. The first end is pivotally connected to the installation assembly. The switching bracket is pivotally connected to the second end of the first supporting arm assembly. The gas spring is disposed in the first supporting arm assembly and is respectively connected to the switching bracket and the installation assembly to provide a supporting force. Each gas spring has a hollow tube, a piston rod, and a compression spring. The piston rod is slidably disposed through the hollow tube and has a head. The head may be varied between maximum and minimum protruding positions relative to the hollow tube. The compression spring is sleeved on the piston rod.

Systems and methods for assembling structural components are disclosed wherein a selectively configurable fixture is placed on an assembly surface of an assembly table. An assembly table interface couples about a pin of a pin slot of the assembly table and, by means of linkage assembly, translates movement of the pin to a positioning member. The positioning member, by the translated movement of the pin, abuts an element of structural component and supports the element while a fastener is applied to join multiple elements of the structural component. A selectively configurable fixture may be used in isolation, or in combination with other fixtures.

Improvements in a shield is disclosed. The steady shield integrates a vest with a shield that can be made from a protective ballistic material that protects the user from projectiles, bottles, heat or debris. An adjustable arm connects the vest to the shield and allows the shield to be moved at least one of towards, away and to the sides and higher and lower relative to the user. Once the shield is positioned the shield will remain in the set position to allow both arms and hands of the user free for other activities. The shield also provides a platform for the storage of tools or other features such as, but not limited to, ammunition, tear gas, water, first aid, lighting, radio, camera, GPS or other display.

An apparatus for hanging an instrument includes a wall plate, an axial arm, and a yoke. The wall plate is configured to secure the apparatus to a wall or other suitable surface. The axial arm extends axially between the wall plate and the yoke. The yoke is configured to receive at least a portion of an instrument. The apparatus also includes a humidistat disposed on a surface of the wall plate opposite the wall or other suitable surface. The humidistat is configured to display a relative humidity value corresponding to an amount of water vapor in the atmosphere proximate the instrument.

Knuckle joint assembly for a medical device support system. The knuckle joint assembly includes a cartridge assembly that includes a cartridge housing and a rotary bearing. The cartridge housing includes a bore having a central axis and a bearing mount in the bore. The rotary bearing is press fitted in the bearing mount and configured to receive axially therethrough a spindle to rotatably support the spindle about the central axis. The knuckle joint assembly includes a retaining clip and a retaining pin. The retaining clip is selectively movable to disengage and engage a groove in a spindle to respectively support or release the spindle along a central axis. The retaining pin is movable between a first position to allow movement of the retaining clip between positions but prevent removal of the retaining clip, and a second position to block movement of the retaining clip from the engaged position.

An adjustable computing device hanger can include a hangable support member; a first set of angling side members, pivotably coupled to the hangable support member, that include first side edge bumpers, and a second set of angling side members, pivotably coupled to the hangable support member, that include second side edge bumpers; and a first guide member that bridges the first set of the angling side members and a second guide member that bridges the second set of angling side members, where each of the first guide member and the second guide member includes a corresponding bottom edge bumper.

A display device is disclosed. The display device includes a display panel, a back cover covering a rear surface of the display panel, a bracket coupled to a rear surface of the back cover, and a support removably coupled to the bracket, wherein the bracket includes a first plate, a second plate facing the first plate, and a link connecting the first plate to the second plate, wherein the second plate includes therein a slot, which is formed toward an inside from a lower side of the second plate and in which the support is movably received, wherein the link includes a lower link, and an upper link disposed above the lower link, and wherein each of the lower link and the upper link extends in a direction intersecting the first plate and the second plate, and is pivotably coupled both to the first plate and to the second plate.

Method and system allowing more accurate detection and identification of unwanted arcing include novel processing of signal voltage representing recovered power-line current. In one implementation, arc-faults are detected based on numerical analysis where individual cycles of line voltage and current are observed and data collected during each cycle is processed to estimate likelihood of presence of arc-event within each individual cycle based on pre-defined number of arc-events occurring within pre-defined number of contiguous cycles. In another implementation, fast transient current spikes detection can be done by: computing difference values between consecutive line-current samples collected over a cycle, average of differences, and peak-to-peak value of line-current; comparing each difference value to average of difference; comparing each difference value to peak-to-peak value; and, based on calculation of composite of two comparisons, using thresholds to determine if arcing is present within processed cycle.

The description relates to devices that can include a base assembly, upper assembly, an arm, and a conductor. In one example the base assembly can include a base shaft and the upper assembly can include an upper shaft. The arm can be secured to the base shaft and the upper shaft to translate a range of rotation of the arm around the base shaft to rotation around the display shaft. The conductor can extend from the base assembly into the arm parallel to the base shaft and extend from the arm into the upper assembly parallel to the upper shaft.

An optics platform includes a base plate, a swing arm pivotally attached to the base plate so as to articulate in a semi-circular motion around a vertical axis on the base plate. The optics platform further includes a pivot arm that is pivotally attached to the swing arm so as to articulate in a semi-circular motion around a horizontal axis of the swing arm.