A folding stand is provided with a panel (1) including two cavities (11) adjacent to two sides of a bottom respectively, two wells (12) in front and rear ends of the cavity (11) respectively; and two legs (2) each including a short part (21), an elongated part (22) formed with the short part (11), a recess (23) between the short part (21) and the elongated part (22), two pivots (24) extending forwardly and rearward from the short part (21) respectively, the pivots (24) being rotatably disposed in the wells (12) respectively, and two mounts (25) put on the pivots (24) and releasably secured to the cavities (11) respectively. The leg (2) can be retracted into the cavity (11) or extended out of the cavity (11) by pivoting with respect to the wells (12).

Disclosed herein is a desk for a music expert, which is intended to improve the efficiency of the arrangement of music equipment used for various music tasks such as composition or arrangement, so that music work can be performed more comfortably. The present invention provides a desk for a music expert, the desk being configured such that a top plate (10) is supported at a predetermined height by support legs (30) and a sliding plate (20) is configured to selectively move forward and rearward in a horizontal direction under the top plate (10); wherein a keyboard (100) is seated on the sliding plate (20), and left and right sides of the sliding plate (20) are movably supported by guide rails (21); and wherein a center portion of the sliding plate (20) is supported by a center reinforcing rail (22) configured to prevent the sliding plate (20) from sagging.

A passenger tray table includes at least two hingedly connected table sections, and is operable to move between at least three positions: 1) a stowed mounting position against a fore positioned monument, where the tray table stows at an angle relative to vertical, and a top portion of the tray table is closer to the passenger than a lower portion of the passenger tray table in the stowed position, 2) a first operative position, where a front table section of the tray table lowers into a horizontal position, while the rear table section remains in the angled stowed position, and 3) a second operative position, where the front table section is disposed closer to the passenger while the rear table section of the passenger tray table is lowered to a horizontal position, in line with the front table section to provide a contiguous table surface.

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.

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.

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.

Workstation for a user (10), in particular intended for a user's (10) keyboard work, the workstation (11) comprising a working surface (12) which is movable in relation to the workstation (11), a motor (16) arranged to drive the working surface (12) of the workstation (11), when the workstation (11) with the working surface (12) thereof is situated on a first lower vertical level (LL), downward and forward from an upper position (UTP) to a lower position (LTPSit) and from said lower position (LTPsit) back to said upper position (UTP) according to a determined length of stroke (42, 43) of a first movement pattern, wherein said motor (16) is adapted to drive said working surface (12) of the workstation (11) when the workstation (11) with the working surface (12) thereof is situated on a second upper vertical level (UL) in a second movement pattern deviating from the first movement pattern.

A notebook computer lap table for facilitating portable use of a notebook computer with an external keyboard includes a pair of platforms comprising a base platform and a shelf platform. A support assembly comprises a left support and a right support coupled to an upper side of the base platform adjacent a left edge and a right edge, respectively. The base platform is configured to receive a notebook computer between the left support and the right support. The support assembly is configured to extend above the keyboard of the notebook computer. The shelf platform has a closed position resting on the support assembly parallel with the base platform over the keyboard and an alternate open position. The shelf platform in the closed position is configured to support an external keyboard.

A portable work support device and support for a key board and a pointing device, such as a mouse, for use by occupants of reclining capable office chairs having an adjustable fitted footrest assembly connected to the chair that will provide the seated chair user the ability to achieve a desired pelvis/feet triangulation stabilization effect while reclined by having the seated user's feet placed correctly in an attached footrest thereby producing a tactile input or cue that will lead to the desired muscle or motor output, causing the seated user to actually sit all the way back in the chair, and to be in a posture biomechanically neutral for using and working on the portable work support device, a work station removably housing the portable work support device, and a foot rest assembly to which a chair can be tethered so that a computer user can be properly positioned in a reclining position in the chair and have reduced posture issues when using the work support device while using computer or like equipment.

Embodiments of the invention include an apparatus for positioning an electronic display. The apparatus can be combined with an existing work surface to provide a multi-position workstation. In some cases the apparatus includes a mounting portion configured to support an electronic display and a keyboard. The mounting portion may be movable with respect to the work surface between multiple positions, including for example, a sitting position and a standing position. Methods for positioning an electronic display and a keyboard are also included.