An adjustable chair, belonging to the field of office furniture, comprising a base frame. A chair back is disposed at the rear end of the base frame. A lifting assembly is disposed on the base frame and provided with a seat, and comprises a bottom frame and a top frame formed with sliding slots. The seat is disposed on the top frame and the seat angle can be adjusted. By adjusting the height of the chair through the lifting assembly and adjusting the rotation angle of the seat, users not only can stand and lean against the chair, but also can normally sit on the chair.

An adjustable chair, belonging to the field of office furniture, comprising a base frame. A chair back is disposed at the rear end of the base frame. A lifting assembly is disposed on the base frame and provided with a seat, and comprises a bottom frame and a top frame formed with sliding slots. The seat is disposed on the top frame and the seat angle can be adjusted. By adjusting the height of the chair through the lifting assembly and adjusting the rotation angle of the seat, users not only can stand and lean against the chair, but also can normally sit on the chair.

A posture correcting chair having a back rest assembly providing mounting attachments for a head or neck rest, a lumbar support, at least one arm rest, and a posture retainer and supported by a seat assembly. The headrest, lumbar, seat and back support all adjust to allow a user to distribute their weight about a greater number of surfaces for adaptive comfort. A posture retainer affixed to the back rest assembly dynamically adjusts to the contour of a user's body based on force and pressure created while seated to provide active posture correction for a user to prevent slumping or slouching. A knee rest assembly is attached to rail system on a lower end of chair the base platform to provide additional support surfaces. The seat and knee rest assembly include heating, cooling or vibrating or massaging.

A posture correcting chair having a back rest assembly providing mounting attachments for a head or neck rest, a lumbar support, at least one arm rest, and a posture retainer and supported by a seat assembly. The headrest, lumbar, seat and back support all adjust to allow a user to distribute their weight about a greater number of surfaces for adaptive comfort. A posture retainer affixed to the back rest assembly dynamically adjusts to the contour of a user's body based on force and pressure created while seated to provide active posture correction for a user to prevent slumping or slouching. A knee rest assembly is attached to rail system on a lower end of chair the base platform to provide additional support surfaces. The seat and knee rest assembly include heating, cooling or vibrating or massaging.

A seating assembly for athletes includes seats having a back and seat portion, a base, an adjustable element, a user interface device, and a controller. The back portion includes a back heating member that provides heat to a user's torso. The seat portion includes a lower limb heating member that provides heat to the user's lower limbs. The base supports each seat. The adjustable element is coupled to the base and one of the seats and adjusts height of the seat. The user interface device receives an input regarding a desired temperature of the back heating member and the lower limb heating member. The controller receives the input and adjusts an operation of the back heating member and the lower limb heating member to achieve the desired temperature. The user interface device receives a second input to adjust the a height of the seat relative to the floor surface.

A seating assembly for athletes includes seats having a back and seat portion, a base, an adjustable element, a user interface device, and a controller. The back portion includes a back heating member that provides heat to a user's torso. The seat portion includes a lower limb heating member that provides heat to the user's lower limbs. The base supports each seat. The adjustable element is coupled to the base and one of the seats and adjusts height of the seat. The user interface device receives an input regarding a desired temperature of the back heating member and the lower limb heating member. The controller receives the input and adjusts an operation of the back heating member and the lower limb heating member to achieve the desired temperature. The user interface device receives a second input to adjust the a height of the seat relative to the floor surface.

The present invention relates to a tiltable chair including: a fixing base having a tiltable housing disposed on an upward protruding dome-shaped center thereof in such a manner as to be movable in an arbitrary direction; a gas cylinder disposed inside the tiltable housing in such a manner as to be linearly reciprocated in upward and downward directions; a seat plate disposed on top of the gas cylinder; and an elastic tiltable member disposed inside the fixing base in such a manner as to accommodate a longitudinal lower part of the gas cylinder therein to allow the gas cylinder to move tiltably about vertical axis to the bottom of the fixing base, wherein the elastic tiltable member includes a fixed frame located on the bottom of the fixing base, a coupling frame located inside the center portion of the fixed frame to accommodate the gas cylinder therein, and a rubber packing located between the fixed frame and the coupling frame and deformed elastically in every direction, wherein the rubber packing has tilt concave grooves formed inward to a given depth from top and underside respectively in such a manner that the tilt concave grooves are reduced in width toward the insides thereof to thus form inclined surfaces.

Accordingly, the tiltable chair is configured to have the elastic tiltable member for accommodating the gas cylinder therein, instead of a large number of coil springs complicated in structure in the conventional practice, so that the tiltable chair can be made simple in structure, thereby preventing the generation of noise when tilted.

The present invention relates to a tiltable chair including: a fixing base having a tiltable housing disposed on an upward protruding dome-shaped center thereof in such a manner as to be movable in an arbitrary direction; a gas cylinder disposed inside the tiltable housing in such a manner as to be linearly reciprocated in upward and downward directions; a seat plate disposed on top of the gas cylinder; and an elastic tiltable member disposed inside the fixing base in such a manner as to accommodate a longitudinal lower part of the gas cylinder therein to allow the gas cylinder to move tiltably about vertical axis to the bottom of the fixing base, wherein the elastic tiltable member includes a fixed frame located on the bottom of the fixing base, a coupling frame located inside the center portion of the fixed frame to accommodate the gas cylinder therein, and a rubber packing located between the fixed frame and the coupling frame and deformed elastically in every direction, wherein the rubber packing has tilt concave grooves formed inward to a given depth from top and underside respectively in such a manner that the tilt concave grooves are reduced in width toward the insides thereof to thus form inclined surfaces.

Accordingly, the tiltable chair is configured to have the elastic tiltable member for accommodating the gas cylinder therein, instead of a large number of coil springs complicated in structure in the conventional practice, so that the tiltable chair can be made simple in structure, thereby preventing the generation of noise when tilted.

A multifunctional swivel chair tray includes a main body. The main body is connected with a warping plate through a second rotating shaft. An ascending and descending block penetrates through the second rotating shaft. The ascending and descending block is connected with an ascending and descending driving mechanism. A first adjusting rod penetrates through one side of the main body. The first adjusting rod is connected with a multi-spring grouping adjusting mechanism. A second adjusting rod is arranged on another side of the main body. The second adjusting rod is connected with a gear adjusting mechanism. The warping plate is connected with a base plate through a third rotating shaft. A slide plate is slidably connected onto the base plate. A slide plate locking mechanism is arranged between the base plate and the slide plate.

A multifunctional swivel chair tray includes a main body. The main body is connected with a warping plate through a second rotating shaft. An ascending and descending block penetrates through the second rotating shaft. The ascending and descending block is connected with an ascending and descending driving mechanism. A first adjusting rod penetrates through one side of the main body. The first adjusting rod is connected with a multi-spring grouping adjusting mechanism. A second adjusting rod is arranged on another side of the main body. The second adjusting rod is connected with a gear adjusting mechanism. The warping plate is connected with a base plate through a third rotating shaft. A slide plate is slidably connected onto the base plate. A slide plate locking mechanism is arranged between the base plate and the slide plate.