A lock is provided for locking a footrest at two chair legs of a chair is provided. The lock has a first blocking rod, a second blocking rod, and an adjustment means cooperating with the two blocking rods. The adjustment means is supported rotatably about a rotation axis, the two blocking rods are arranged coaxially and spaced apart from each other and are respectively perpendicular with respect to the rotation axis (DA), the two blocking rods are respectively coupled to the adjustment means, and a rotation of the adjustment means about the rotation axis (DA) causes the two blocking rods to move synchronously in opposite directions. Also provided are a footrest having a lock according to this disclosure and a chair having one or both of a lock according to this disclosure and a footrest according to this disclosure.

The present invention relates to a portable leg support, comprising: a detachable seat coupling, the detachable seat coupling having an engagement member to secure the detachable seat coupling to a seat; an upper body connected to the detachable seat coupling, the upper body having a pair of retractable upper leg supports, the upper legs supports each extending into a position perpendicular to a longitudinal axis of the upper body and being diametrically opposed to each other when extended; and a lower body connected to the upper body, the lower body having a pair of retractable lower leg supports, the lower legs supports each extending into a position perpendicular to a longitudinal axis of the lower body and being diametrically opposed to each other when extended, wherein the leg support provides support for a user's legs when coupled to a seat and the upper leg supports and lower leg supports are extended.

A chair support assembly is provided which can comprise a bracket assembly having a horizontal bracket and a vertical bracket, the vertical bracket extending from the horizontal bracket at a substantially perpendicular orientation relative to the vertical bracket, and an adjustable arm telescopically coupled to the horizontal bracket, the adjustable arm slideably moveable in a longitudinal direction of the chair support assembly. The chair support assembly can also comprise a shin support assembly slideably coupled to the vertical bracket, the shin support assembly including a shin rest that is sized and shaped to rest against a shin of a user. Related methods of use are also provided.

A foot and/or leg support device for a chair, the chair including a central post having a base, a seat supported by the central post, and a plurality of support legs which branch from the base of the central post. In an example, the support device includes: a connector for attachment to the central post of the chair, wherein the connector comprises a circular interior having a radius of curvature substantially equal to a radius of the central post of the chair; a cantilever arm which extends from the connector; a pivot which connects the cantilever arm to the connector, the pivot being configured for vertical pivoting; and a support frame located at a distal end of the cantilever arm for supporting a foot and/or leg of a user.

An adaptable chair with multiple adjustable components that may be configured by the user for various seating positions, particularly to change between conventional and cross-legged seating position. The adaptable chair's seating surface is comprised of a set of separate surface components for each of the user's right and left thighs. In a conventional seating configuration, the seating surface components are in a closed or joined position and the footrest in an unobtrusive position. To configure the chair for cross-legged seating, the seat components for each thigh may be moved apart to allow a user cross-legged seating position and rest the feet and lower legs upon the footrest. The disclosure describes various means of adjustment to the thigh supports and footrest, and mechanisms for actuating the various configurations to maximize comfort and ease of use.

An access system includes a laterally extending frame, a carriage in operative connection with the laterally extending frame and including a drive to move the carriage laterally on the frame, a seat support attached to the carriage including a seat assembly interface and a lift to raise and lower the seat assembly interface within a range of positions, a seat assembly attached to the seat assembly interface, a controller in operative connection with the drive of the carriage and the lift of the seat support via which the position of the seat support is controllable, and a controller interface in operative connection with the controller.

Provided are systems and methods for a telescope observation chair assembly. The assembly includes a seat having a pad, a telescoping portion extending from the pad, and an adjustment assembly at least partially disposed interior to the telescoping portion. The assembly also includes a housing comprising one or more walls having one or more slots and one or more grooves cutout therefrom, the one or more walls receiving the telescoping portion of the seat. The assembly further includes a footrest.

A lock is provided for locking a footrest at two chair legs of a chair is provided. The lock has a first blocking rod, a second blocking rod, and an adjustment means cooperating with the two blocking rods. The adjustment means is supported rotatably about a rotation axis, the two blocking rods are arranged coaxially and spaced apart from each other and are respectively perpendicular with respect to the rotation axis (DA), the two blocking rods are respectively coupled to the adjustment means, and a rotation of the adjustment means about the rotation axis (DA) causes the two blocking rods to move synchronously in opposite directions. Also provided are a footrest having a lock according to this disclosure and a chair having one or both of a lock according to this disclosure and a footrest according to this disclosure.

Provided are systems and methods for a telescope observation chair assembly. The assembly includes a seat having a pad, a telescoping portion extending from the pad, and an adjustment assembly at least partially disposed interior to the telescoping portion. The assembly also includes a housing comprising one or more walls having one or more slots and one or more grooves cutout therefrom, the one or more walls receiving the telescoping portion of the seat. The assembly further includes a footrest.

The fastening structure includes an inner sleeve, a quick-release handle and an outer sleeve. The inner sleeve has an outer threaded conic surface, a through slot, shrinkable slots and claw plates between adjacent two of the shrinkable slots. The quick-release handle is provided at a bottom end of the inner sleeve for controlling a width of the through slot. The outer sleeve is used for connecting the footrest ring and has an inner threaded conic surface to screw the outer sleeve onto the inner sleeve.