Abstract: Various aspects of the present disclosure are directed toward apparatuses, systems and methods for connecting a first support and a second support. The apparatuses, systems and methods may include a first bracket arranged on the first support and a second bracket arranged on the second support to connect the first support and the second support.

Abstract: Various aspects of the present disclosure are directed toward apparatuses, systems and methods for connecting a first support and a second support. The apparatuses, systems and methods may include a first bracket arranged on the first support and a second bracket arranged on the second support to connect the first support and the second support.

Abstract: A chair having a seat and a back rest comprises a fluid-containing cushion in the back rest that provides passive automatically adjustable support for the user's lumbar region. The cushion can comprise one or more fluid-containing chambers encompassing the areas of the user's upper back and lumbar regions. As the user leans backs, fluid is forced from the regions adjacent the upper back down to the lumbar region to provide enhanced lumbar support to the user.

Abstract: A horizontally adjustable armrest for a chair including a vertically slideable element having a base, a lower horizontal slide element movable longitudinally, an upper horizontal slide element movable laterally and an armrest cover. The lower horizontal slide element includes a longitudinally extending slot with a shoulder. Two fasteners extend through the slot and are fastened to the base. Under the fasteners' heads are springs and washers to bias the lower slide element into frictional engagement with the base. The upper surface of the lower horizontal slide element includes a pair of guide rails which are received in recesses formed in the bottom surface of the upper horizontal slide element. The upper slide element includes two slots extending perpendicular to the slot of the lower slide element. Fasteners, springs and washers are used to bias the upper slide element into frictional engagement with the lower slide element. An armrest cover fits over the horizontal slide elements.

Abstract: A vertically adjustable armrest assembly having a support, a plate fitted to an interior of said support, the plate having a series of vertically aligned openings, a slide having an armrest at a top end portion, and a lateral slot for guiding a block into and out of selective aligned openings in the plate. A rod having a saw tooth portion complementing a slanted opening in the block allows manipulation of the rod to selectively move the block into and out of the plate openings.

Abstract: An adjustable chair seat with a locking mechanism that is torque limiting and resistant to loosening. The chair includes a seat pan, a seat plate, a rotatable fastener and two rings. The seat pan and seat plate have openings for receiving the fastener. The fastener includes a cup handle and a threaded insert. The threaded insert is engaged with the seat pan through an opening in the seat pan while the seat plate is sandwiched between the seat pan and the fastener. When being rotated, the cup handle slips relative to the threaded insert after a predetermined resistance is reached so as to cease the application of torque to the threaded insert. One of the rings is keyed to rotate with the fastener and the other ring is keyed to remain non-rotatable. The first ring includes an array of cantilevered teeth where each tooth has a first surface disposed at a smaller angle from a horizontal reference plane and a second surface which is disposed at a greater angle from the horizontal reference plane.

Abstract: A height adjustment cylinder for use with a desk chair, where the cylinder is simple, reliable and easily assembled with the chair. The cylinder includes a piston shaft which has a threaded region that is of constant diameter or straight walled, and the threaded region includes a high load helical thread.