Tilting Surface Kneeling Chair

Abstract

A kneeling chair is provided with tilting seat plate and tilting knee plate with rotational tilt of the seat plate enabling the sitting to individual to sit back on a generally horizontal oriented or partially inclined positions of the seat without leaving the chair. The range of tilt is controllable by varied location of the axis of rotation and stops which can be adjusted. The rotation may be dampened by a brake apparatus provided.

1 . I claim in a kneeling chair having an inclined seat plate and a knee plate, each mounted to a respective frame member the invention comprising a tiltable seat provided as a plate, or a tiltable knee rest as a plate (or both said plates provided in the same said chair), each said plate joined to each said respective frame member in a hinged relationship to said frame member. 
   
   
       2 . The invention in  claim 1  including wherein said hinged relationship is accomplished by a reference axle to which said plate and said frame member are joined and where one or both of said plate and said frame member are enabled to rotate around said reference axle and including where said reference axle is tubular. 
   
   
       3 . The invention in  claim 2  wherein said reference axle is fixed in relationship only to either said frame member or to said plate (designated as the fixed pair part) and the remaining one of the two (said frame member or said plate) remains a rotatable pair part in relation to said reference axle. 
   
   
       4 . The invention in  claim 2  wherein said axle is retained around portions of its circumference within strap like anchors, said straps being fastened to said frame member and to said plate which are joined in an operating pair. 
   
   
       5 . The invention in  claim 2  wherein said plate, which may serve as a seat, is provided with a shim block, with cylindrical recess to mate with the circumference of the tubular axle at one or more points under said seat plate wherein the weight of said plate is applied through said shim block, and where said shim block may be chosen for its preferred coefficient of friction against the circumference of said reference axle. 
   
   
       6 . The invention in  claim 5  wherein said shim block provides additional clearance at said cylindrical recess providing for the insertion and fixation of a selected layer of material offering a chosen coefficient of friction operative against said axle surface. 
   
   
       7 . The invention in  claim 3  wherein said reference axle is partially surrounded within a braking strap mounted upon a region of said kneeling chair which is a rotatable pair part and said braking strap provides constriction on the circumference of said axle to restrain rotation in relation to said fixed axle mounted on said fixed pair part and said rotational pair part may be a seat plate or a knee plate or both on a given kneeling chair. 
   
   
       8 . The invention as in  claim 7  wherein said braking strap is adjustable for braking load comprising an anchoring of one end of strap and a non rotating pin joined to the other end of said strap and said pin is moveable along its length by threaded travel through a tightening nut 
   
   
       9 . The invention in  claim 1  wherein said plate having an anterior region of impingement superimposed to its paired frame member during rotation and carries an anterior stop to limit forward rotation and pinch space distance, said stop may be applied to said plate or to its paired frame member. 
   
   
       10 . The invention in  claim 9  wherein said anterior stop is adjustable in height comprised by a rotatable rod protruding from said frame member and enabled to rise or fall according to a threaded relationship with said frame member. 
   
   
       11 . The invention in  claim 1  wherein said reference frame member so inclined and serving as support for said hinged seat plate is provided with a rearward frame extension of generally horizontal orientation positioned to limit backward tilting of said plate and said frame extension may carry 1 or more rearward stops to alter the angle of backward tilt and the rearward pinch space distance between said extension and said plate. 
   
   
       12 . The invention in  claim 11  wherein said rearward stops are adjustable as provided for in  claim 10  by mounting upon a rod having threaded relationship to said frame extension. 
   
   
       13 . The invention in  claim 9  wherein said plate is provided in a region serving as a knee rest and is provided upon a frame member 
   
   
       14 . The invention in  claim 2  wherein a range of rotational movement is provided for said plate in relation to said frame member according to offset of the virtual axis of said reference axle from either said plate or said frame member which are joined by said axle as a pair and where said offset is provided in relation to either part of the pair by a shim block interposed between said axle and said part of the pair. 
   
   
       15 . The invention in  claim 2  wherein a range of rotational movement is provided for said plate in relation to said frame member according to offset of the virtual axis of said reference axle from both said plate or said frame member which are joined by said axle as a pair and where said offset distance is provided in relation to both parts of the pair by an axle of chosen enlarged diameter interposed between said axle and said parts of the pair, including wherein said axle is tubular or otherwise constructed of a low density matrix.