Adjustable chair-armrest assembly

Chairs and seats – Armrest – Adjustable to multiple use positions relative to bottom or back

Patent

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Details

29741137, 29741135, 248118, 2482821, A47C 754

Patent

active

056558147

ABSTRACT:
An adjustable chair-armrest assembly includes a positioning plate attached to a chair seat, and a coupling seat having two side walls with inverted V-shaped top edges, and a bottom wall rotatably mounted over the plate by a vertical pivot pin. The plate has several equidistant positioning holes which are all spaced apart from the pivot pin at a predetermined distance. A ball is provided on the bottom wall and is biased to engage a selected one of the positioning holes so as to position the coupling seat on the plate. A tilting seat is pivoted on the coupling seat in such a manner that the tilting seat can swing on the coupling seat. An armrest member has a wrist receiving element attached to a front end portion thereof and is mounted movably on the tilting seat in such a manner that the armrest member can be moved forward and rearward on the tilting seat. A spring unit is disposed on the rear portion of the assembly so as to return the titling seat to a predetermined position relative to the coupling seat after the wrist receiving element is depressed and turned downward. The wrist receiving element can be turned to the left or right so as to move the ball from the selected one of the positioning holes into another one of the positioning holes.

REFERENCES:
patent: 5143422 (1992-09-01), Althofer et al.
patent: 5407249 (1995-04-01), Bonutti
patent: 5415459 (1995-05-01), Schultz
patent: 5439268 (1995-08-01), Dozsa-Farkas
patent: 5536070 (1996-07-01), Lemmen

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