Armchair with seatlift

Abstract

An improvement in an ARMCHAIR WITH SEATLIFT, as patented in U.S. Pat. No. 5,816,655 designed for a disabled person, or a person with weak legs, the armchair having a seat able to move vertically up and down in the frame of the armchair from a normal seating position to a position flat on the ground, the improvement being: making the armchair automatically mobile and automatically immobile when desired, by attaching wheels to the armchair in such a manner that the armchair automatically becomes mobile by making the wheels automatically become in contact with the ground when the seat moves to it's upper position, and automatically making the seat become in full frictional contact with the ground when the seat is in it's lower position, thereby facillitating the transfer of a person, fallen on the ground, safely onto the seat, without the seat tending to move away from the person during the transfer.

I claim:  
     
         1 . An improvement in an Armchair With Seatlift , as described in issued U.S. Pat. No. 5,816,655, in which said Armchair With Seatlift in the following called “liftchair”, has a seat means that has an “upper” position and a “lower” position, and a frame, said liftchair being made automatically mobile and respectively automatically immobile and stable on the ground said liftchair is standing on, by adding wheel means to said liftchair, said wheel means extending slightly below bottom of said, frame, said seat means being able to move in such a manner as to automatically lock said liftchair to said ground upon said seat means being in said “lower” position said seat means being activated by electrically driven means described in above mentioned US Patent, said seat means being able to go down between said wheel means to rest fully on said ground in said lower position, said seat means being able to carry the weights of said liftchair and said wheel means and transfer said weights to said ground in said “lower” position, automatically rendering said liftchair frictionally immobile, thereby to permit a fallen person on said ground to transfer safely from said ground onto said seat means, said liftchair automatically becoming fully mobile upon said seat means being moved upward toward said upper position, releasing said seat means and said weights from contact with said ground, allowing said wheel means to be free to move over said ground.  
     
     
         2 . An improvement in a liftchair as claimed in  claim 1 , in which said wheel means comprise a combination of fixed wheel means and swivel wheel means located at said bottom of said liftchair, said seat means being able to go down between said combination of wheel means to said ground, said seat means being able to lift said combination of wheel means slightly above said ground, friction between said seat and said ground thereby rendering said liftchair immobile to facillitate safe transfer of a fallen person from said ground to said seat means, said liftchair automatically becoming mobile upon said seat means being moved upward, automatically releasing said friction between said seat means and said ground and at the same time allowing said combination of wheels means to go down in contact with said ground.  
     
     
         3 . An improvement in a liftchair as claimed in  claim 1 , in which said liftchair has a frame with two sides and in which said wheel means comprise wheel chair type wheel means, rotatably attached to each of said two sides of said frame, making said liftchair mobile, said seat means being able, when desired, to go vertically down between said wheelchair wheel means to said ground and be in full contact with said ground, said seat being able to lift said wheelchair wheel means slightly off said ground to automatically render said liftchair fully immobile, said liftchair automatically becoming mobile again upon said seat means being moved upward out of contact with said ground.  
     
     
         4 . An improvement in a liftchair as claimed in  claim 3 , in which said frame is of tubular construction made substantially of wheelchair type tubing, substantially in the form of a conventional wheelchair, including brake means to control mobility of said liftchair.  
     
     
         5 . An improvement in a liftchair as claimed in  claim 4 , in which battery means are carried on said frame to drive said liftchair mechanism and to facillitate mobility of said liftchair.