Dining chair with reclining mechanism

Abstract

A dining chair has a reclining mechanism and includes a plurality of legs, a base, backrest and supporting surfaces. The mechanism enables a dining chair to recline and automatically retract to its original position once the reclining force is removed. A user may secure an accurate sitting posture. The reclining mechanism may be embedded or attached to the dining chair, and may include a reclining backrest and other members of the chair, including the legs, a base and other supporting surfaces that allow movements of the backrest with respect to other members. A range of reclining movements is enabled between upright positions and maximum reclining angle. The backrest automatically retracts to its original position once the force is removed.

1 . A chair with reclining mechanism comprising: 
 a sitting base ( 3 ) supported by a plurality of legs ( 4 ) wherein said base ( 3 ) and legs are collectively referred to herein as the “rigid members” of the chair;    a backrest ( 1 ) with one end pivotally connected to at least one rigid member; and    at least one reclining means ( 2 ) connecting said backrest to said rigid member; wherein said reclining means ( 2 ) allows backrest to adaptably recline according to pressure exerted by a user, and to revert to original position upon removal of said pressure characterised in that said reclining means ( 2 ) comprises a non-torsional spring-bias element, said element is arranged to be compressible in any position except along a substantially vertical direction.    
     
     
         2 . A chair according to  claim 1 , wherein said reclining means includes at least one of a piece of elastic material capable of returning to its original form when the reclining force which is applied to the backrest is removed; and components or parts that can be extended or compressed when a reclining force is applied to it by the backrest and is biased to return to pre-stressed form upon said force is removed.  
     
     
         3 . A chair according to  claim 2 , wherein the reclining means' material includes elastic polymers, including rubber and plastics.  
     
     
         4 . A chair according to  claim 2  wherein the components includes any one of a non-torsional spring-bias element including spring plate, metal plate that is shaped to perform like a spring plate or leaflet spring, and compressible and/or extensible element including pneumatic- or spring-biased telescopic element.  
     
     
         5 . A chair according to  claim 1 , wherein said reclining means is provided in any one of the following dispositions—part or wholly exposed, completely hidden, embedded within the backrest, hidden within hollow cutouts, inside of the said backrest.  
     
     
         6 . A chair according to  claim 1 , wherein said backrest enables user to recline thereon within a range of reclining angles allowable by the reclining means used.  
     
     
         7 . A chair according to  claim 6 , wherein the said backrest extends to form hind legs of said chair and comprises two portions whereby 
 the top portion has a freedom of rotation with respect to the said rigid members; and    the bottom portion is connected to said rigid members as well as to said top portion by any joint means, wherein said bottom portion serve as legs; and with a reclining mean is incorporated in between said portions of the said backrest.    
     
     
         8 . A chair according to  claim 7 , wherein the said reclining means is incorporated in the joint between the top and bottom portions of said backrest, wherein said reclining means comprises elastic means to absorb compression force due to said reclining movement and which will return to its original uncompressed form upon said compression force is removed.  
     
     
         9 . A chair according to  claim 7 , wherein said reclining means is incorporated in the joint between the top and bottom portions of said backrest, and wherein said reclining means comprises at least a metal spring plate that may be biased to bend due to reclining pressure and reverts back to its pre-stressed position upon said reclining force is removed.  
     
     
         10 . A chair according to  claim 7 , wherein the said reclining means is incorporated in the joint between the top and bottom portions of said backrest, and wherein said reclining means a coil spring that is biased upon allowing the top portion of the said backrest to pivotally rotate about said joint with said bottom portion upon receiving reclining force and said bias returns said backrest to return its pre-stressed position upon the reclining force is removed.  
     
     
         11 . A chair according to  claim 8 , wherein the said reclining means uses-elastics means, including elastic material and/or non-torsional spring-biased element disposed hidden inside the backrest ( 13 ).  
     
     
         12 . A Chair according to  claim 8 , wherein said reclining means uses elastic means, including elastic material and/or non-torsional spring-biased element that is housed externally ( 9 ).  
     
     
         13 . A chair according to  claim 8 , wherein said reclining means comprises a metal plate hidden inside the said backrest.  
     
     
         14 . A chair according to  claim 10 , wherein said reclining means comprises a coil spring hidden inside said backrest.  
     
     
         15 . A chair according to  claim 14 , wherein the backrest comprises two portions that are securely joined together by a supporting means which includes a metal rod inserted inside said backrest and hinged in between said two portions of the said backrest, and wherein said supporting means is capable of withstanding repeated cycles of reclining movements.  
     
     
         16 . A chair according to  claim 15 , wherein said sitting base and backrest includes any one or combination of padded, upholstered or bare material.  
     
     
         17 . A chair according to  claim 1 , wherein the legs are provided at an appropriate length and affixed at an appropriate angle from the normal of the said sitting base.  
     
     
         18 . A chair according to  claim 1 , wherein the connection means for holding members comprising the chair includes nuts and bolts assemblies, fasteners, screws, snaps, clamps, clips and the like fastening means.  
     
     
         19 . A chair according to  claim 1 , the chair is incorporated with at least one supporting surface for resting of limbs.