A height adjusting mechanism for a dentistry stool comprises a support member, a movable height adjusting assembly and a pushbutton actuator. The support member is coupleable to the stool adjacent a seat of the stool. The movable height adjusting assembly is selectively movable up and down relative to the support member. The pushbutton actuator is positionable on a side of the movable height adjusting assembly adjacent a seated user, and is manually actuatable by the seated user to release the movable height adjusting assembly from a locked position at a current height to allow the movable height adjusting assembly to be moved to a new height. The height adjusting mechanism can be implemented to provide a height-adjustable seat back and/or a height-adjustable torso bar.

A furniture system includes an office productivity structure (OPS). The furniture system also includes a sensor coupled to the OPS, the sensor operable to detect occupancy of the OPS and generate an output signal indicative of the occupancy; and a processor coupled to the sensor. The processor is operable to receive the output signal generated by the sensor, determine, based on the output signal, that the OPS is occupied, and, in response to determining that the OPS is occupied, generate a command to initiate at least one action associated with the OPS or an operator of the OPS.

A furniture system includes an office productivity structure (OPS). The furniture system also includes a sensor coupled to the OPS, the sensor operable to detect occupancy of the OPS and generate an output signal indicative of the occupancy; and a processor coupled to the sensor. The processor is operable to receive the output signal generated by the sensor, determine, based on the output signal, that the OPS is occupied, and, in response to determining that the OPS is occupied, generate a command to initiate at least one action associated with the OPS or an operator of the OPS.

An interlockingly extending driving mechanism for an electric sofa, including a backrest adjusting assembly provided in a sofa seat frame. A footrest assembly is provided at one end, remote from the backrest, of the backrest adjusting assembly, and the backrest adjusting assembly is connected with the footrest adjusting assembly. The footrest adjusting assembly includes a supporting rod which is vertically and fixedly provided on the surface of one side of the backrest adjusting assembly, a driving unit is provided on the supporting rod, the driving unit is drivingly connected with a transmitting screw, an interlocking unit is movably connected to one end, close to the footrest, of the transmitting screw, the interlocking unit is movably connected with the footrest, and when the transmitting screw drives the interlocking unit to move, the interlocking unit drives the footrest assembly to extend or fold.

According to an aspect of some embodiments of the present disclosure there is provided a chair including a base component, a seat component connected to the base component by a central hinge, and a back-rest component connected to the seat component by a back hinge, wherein when the chair is in a sitting position, the seat component is lower than the central hinge. Related apparatus and methods are also described.

According to an aspect of some embodiments of the present disclosure there is provided a chair including a base component, a seat component connected to the base component by a central hinge, and a back-rest component connected to the seat component by a back hinge, wherein when the chair is in a sitting position, the seat component is lower than the central hinge. Related apparatus and methods are also described.

A gaming chair with audio output. The gaming chair includes a movable stand member, a seat member, a backrest member, a plurality of speakers, a Bluetooth transmitter, a power supply, and an inverted triangle wiring. The seat member is disposed over the movable stand member. Further, the backrest member is hingeably coupled to the seat member. Furthermore, the inverted triangle wiring is adapted to electrically couple the plurality of speakers, the Bluetooth transmitter and the power supply to enable an electrical connection therebetween.

A chair includes a lower chair and an upper chair. The lower chair includes a tilt-swivel mechanism defining a vertical swivel axis, a yoke, and a column extending between the tilt-swivel mechanism and the yoke. The upper chair is pivotably mounted to the yoke about a horizontal upper chair pivot axis. The upper chair includes a seat adapted to cradle the ischial tuberosities of a user.

A chair armrest is revealed. The chair armrest includes an armrest support, an armrest pad body, a connection body, and a connecting member. The armrest pad body has a mounting slot with an opening facing downward while the mounting slot has a depth and a shape. The connection body is provided with a thickness and a shape which are corresponding to the depth and the shape of the mounting slot. Thus the connection body can be mounted and positioned in the mounting slot. The armrest support and the connection body of are connected by the connecting member. During assembly of the chair armrest, the armrest support is connected to the connection body by the connecting member while the armrest pad body is affixed with the armrest support into one part by the connecting member. Thereby production cost is reduced.

An easily assembled chair armrest is revealed. The easily assembled chair armrest includes an armrest support, an armrest pad body, and at least one fastening member arranged between the armrest support and the armrest pad body. The fastening member includes at least one first fastening portion and at least one second fastening portion which are aligned and pressed vertically to fit and connect with each other. One of the first fastening portion and the second fastening portion is disposed on a top support surface of the armrest support while the other is arranged at a first mounting space of the armrest pad body. While being assembled to form the chair armrest, the armrest support is connected with the armrest pad body to form one part by vertical fastening of the first fastening portion and the second fastening portion of the fastening member. Thus manufacturing cost is reduced relatively.