A tray table assembly and aircraft passenger seat arrangement including the same, the tray table assembly including a rail, along which a carriage slides, disposed within an alcove, from which a tray table can be deployed via a link connecting the tray table to the carriage. The link provides both the connection between the tray table and carriage for positioning the tray table horizontally along the rail and the pivotable connections between the tray table, link, and carriage for adjusting the tray table vertically, perpendicular to the rail path. Thus, the tray table assembly may be hidden in the alcove in a stowed position, partially deployed with the tray table vertically offset from the carriage, fully deployed with the tray table outside of the alcove, and any position in between.

A desktop workspace that adjusts vertically includes a work surface platform, a base configured to sit on an existing platform, such as a desk, a height adjustable mechanism including at least one set of arms that connect at a pivot point(s) creating a scissoring motion to raise and lower the said work surface platform to various heights. A locking and unlocking mechanism may connect to the height adjustable mechanism. In some cases, the apparatus includes an adjustable mechanism to support items such as a keyboard. In some cases, the apparatus includes elements to raise items such as a monitor to an additional height.

A system includes: a case including a first part pivotally connected to a second part, wherein the first part and the second part are configurable in a first case position in which the case is closed, and the first part and the second part are configurable in a second case position in which the case is open; an adjustable stand connected to an interior of the case, the adjustable stand including: a bottom frame connected to the case; a top frame connected to the bottom frame via at least one height adjustment system; and a platform connected to the top frame. The platform is rotatable relative to the top frame such that the platform can be positioned at one of plural predefined tilt-angles relative to the top frame. The height adjustment system permits the top frame to be moved vertically relative to the bottom frame to position the top frame at one of plural predefined heights relative to the bottom frame.

A system includes: a case including a first part pivotally connected to a second part, wherein the first part and the second part are configurable in a first case position in which the case is closed, and the first part and the second part are configurable in a second case position in which the case is open; an adjustable stand connected to an interior of the case, the adjustable stand including: a bottom frame connected to the case; a top frame connected to the bottom frame via at least one height adjustment system; and a platform connected to the top frame. The platform is rotatable relative to the top frame such that the platform can be positioned at one of plural predefined tilt-angles relative to the top frame. The height adjustment system permits the top frame to be moved vertically relative to the bottom frame to position the top frame at one of plural predefined heights relative to the bottom frame.

A lifting platform with a sliding keyboard holder is disclosured. The lifting platform has a table plate, a base and a supporting leg connected with the table plate and the base, and a keyboard holder connected to the table plate. And the keyboard holder is slidably connected to the table plate in the vertical direction and is locked by a locking device. The keyboard holder can slide in the vertical direction to the position below the working table surface where the lifting platform is placed. With the above structure, the keyboard holder can be locked at any height at any time to meet the ergonomic requirements of different users, and the operation is simple, convenient and flexible.

An angle adjustment mechanism of a storage drawer of a desk for a keyboard contains: two lockers, two connectors, two movable pieces, two retainers, and two adjustment assemblies. The locker includes a locking section and a through orifice. The connector includes a stop plate, a fitting portion, multiple first teeth, and a column. The movable piece includes a connecting section, a passing orifice, and a support section. The retainer includes a first receiving orifice, multiple second teeth, at least one first slot, at least one recess, and at least one second slot. The adjustment assembly includes a drive member having an accommodation space, at least one second protrusion, a second receiving orifice, and a third receiving orifice. The first adjusting member includes a fourth receiving orifice, at least one fourth notch, at least one fifth notch, and a sixth notch. The second adjusting member has at least one post.

A workstation comprising a chassis having a base frame (10) and a monitor frame assembly (11), said base frame (10) defining a work area (20) at its proximal end for accommodating a user therein, in use, wherein a desk unit (24) is mounted laterally across said work area and provides a work surface for use by a user accommodated in said work area (20), in use, said monitor frame assembly (11) comprising an outer frame, extending laterally across said base frame (10) and upwardly from its distal end, and an inner frame (32) mounted within said outer frame and configured to receive thereon a plurality of monitor brackets (45), wherein said desk unit (24) is longitudinally adjustable relative to said base frame (10) so as to selectively adjust its distance from the monitor frame assembly (11), and said inner frame (32) is vertically adjustable within, and relative to, said outer frame so as to selectively adjust its height relative to said base frame; and further wherein respective locking means are provided to releasably lock said desk unit and said inner frame in a selected position.

A workstation comprising a chassis having a base frame (10) and a monitor frame assembly (11), said base frame (10) defining a work area (20) at its proximal end for accommodating a user therein, in use, wherein a desk unit (24) is mounted laterally across said work area and provides a work surface for use by a user accommodated in said work area (20), in use, said monitor frame assembly (11) comprising an outer frame, extending laterally across said base frame (10) and upwardly from its distal end, and an inner frame (32) mounted within said outer frame and configured to receive thereon a plurality of monitor brackets (45), wherein said desk unit (24) is longitudinally adjustable relative to said base frame (10) so as to selectively adjust its distance from the monitor frame assembly (11), and said inner frame (32) is vertically adjustable within, and relative to, said outer frame so as to selectively adjust its height relative to said base frame; and further wherein respective locking means are provided to releasably lock said desk unit and said inner frame in a selected position.

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.

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.