An adjustable shelf includes a wall mount for coupling to a wall. A fixed post extends downwardly from the wall mount along a first axis. A post assembly has a rotatable tube coupled to the fixed post so that the rotatable tube rotates about the first axis. An arm extends from the rotatable tube along a second axis substantially perpendicular to the first axis. A shaft rotatably couples within the arm and extends from the arm along the second axis, the shaft being rotatable about the second axis between an operational orientation and a storage orientation. A tray extends from the shaft for holding a keyboard. In the storage orientation, the tray is substantially parallel to the wall and, in the operational orientation, the tray is at an angle with respect to the wall. A locking assembly selectively fixes the tray in the operational orientation and the storage orientation.

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.

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.

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.

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.

Various embodiments concern locking release mechanisms that allow an articulated support arm to be moved between various vertical orientations. A locking release mechanism may include a handle release mechanism positioned within the handle of the articulated support arm, and a gas spring release mechanism positioned within the body of the articulated support arm. The articulated support arm can include a gas spring that remains locked until the handle release mechanism is activated, e.g. by applying pressure to a grip actuator. Other embodiments concern cable management techniques for articulated support arms. Oftentimes, an articulated support arm will include cables routed through the arm that are configured to support an attachment. For example, the cable(s) may be adapted for audio signals, video signals, power, etc. The cable(s) can be readily cleaned and/or serviced when routed through an articulated support arm composed of one or more removable pieces.

A gaming chair assembly with adjustable keyboard assembly having a base frame assembly with a tubular framing configuration and a keyboard tray assembly having a lower tubular arm member selectively and telescopically coupled to one of the plurality of base frame members in a selectively lockable configuration, a pivoting lower tubular arm member rotatably coupled to the lower tubular arm member, two upright tubular arm members coupled together, wherein one of the upright tubular arm members has a tubular t-post defining a through hole thereon. A keyboard support member is selectively, slidably, and lockably coupled to the tubular t-post and disposed within the through hole thereon and a keyboard tray member with a mounting bracket coupled thereto is pivotably coupled to a tray clamping member with a through hole defined thereon and that is selectively, slidably, and lockably coupled to the keyboard support member.

adjustable keyboard bracket mechanism includes fixed seat provided with first axle for use as pivot and rotatable second axle; bracket set including first support with one end thereof fastened to the first axle and the second axle and the other end thereof provided with third axle, second support having one end thereof fastened to the second axle and the other end thereof provided with fourth axle and adjustment device set fastened to the third axle and the fourth axle, the adjustment device set including rotating adjustment block having two opposite sides thereof respectively provided with first friction wheels and two mating friction blocks each having inner side thereof provided with second friction wheel for fitting the first friction wheel to form the positioning or rotating adjustment status of the adjustment device set; and connecting seat assembled on the rotating adjustment block opposite to the third axle and the fourth axle.

Various embodiments concern locking release mechanisms that allow an articulated support arm to be moved between various vertical orientations. A locking release mechanism may include a handle release mechanism positioned within the handle of the articulated support arm, and a gas spring release mechanism positioned within the body of the articulated support arm. The articulated support arm can include a gas spring that remains locked until the handle release mechanism is activated, e.g. by applying pressure to a grip actuator. Other embodiments concern cable management techniques for articulated support arms. Oftentimes, an articulated support arm will include cables routed through the arm that are configured to support an attachment. For example, the cable(s) may be adapted for audio signals, video signals, power, etc. The cable(s) can be readily cleaned and/or serviced when routed through an articulated support arm composed of one or more removable pieces.

A user console for controlling a remote surgical robotic instrument may include an adjustable ergonomic seat assembly comprising a seat pan, where the seat assembly is configurable between a seated configuration and an elevated configuration, and where the seat pan has a higher anteverted position in the elevated configuration than in the seated configuration. The user console may further include a display configured to receive real time surgical information, and one or more controls for remotely controlling the robotic instrument. The display and/or the one or more controls may have multiple positions and change position automatically according to a seating profile associated with at least one user.