OFFICE CHAIR Russian patent published in 2021 - IPC A47C3/00 A47C9/02 A47B7/00 

FIELD: office furniture.

SUBSTANCE: invention relates to seating furniture, in particular to office chairs. The expected result is achieved by the fact that the office chair contains a height-adjustable swivel seat support with a telescopic retainer, armrests and a backrest, while it contains a body in the form of legs on wheels, in the central part of which there is a hole inside which a cylindrical support ring with a lower base sloped inwards is placed, a lower support plate, the lower part of which has a convex-curved shape, while the base plate on the periphery has eyelets located opposite the legs on the wheels of the body, connected by springs with mounting eyelets, located on the periphery in the upper part of the specified support ring opposite the eyelets, in the inner part of the specified support ring, a ring with an internal side conical surface is pressed, engaging with a ring with an external side conical surface pressed onto a support cylinder, which is connected in the lower part to the base plate by means of a screw, in addition, the ring with an external side conical surface has a built-in locking system with holes and a pin.

EFFECT: reducing the load on the lumbar spine and giving the spine an anatomically correct position while maintaining its physiological curves.

1 cl, 5 dwg