Chairs and seats – Movable back – Tiltable
Patent
1992-06-01
1994-09-20
Cuomo, Peter M.
Chairs and seats
Movable back
Tiltable
29734414, B60N 202
Patent
active
053483758
ABSTRACT:
A dental patient chair is provided with a backrest which is arranged inclinably with a backrest carrier on a seat and is adjusted toward and away from the seat so that the backrest carrier and seat are each, respectively, provided with a curved path in which appropriate guide elements are allocated. As a result, the backrest carrier is moved under the seat when the backrest is inclined backward and, in turn, is withdrawn from within the seat when the backrest is moved forward to an upright position. In order to achieve an optimum motion sequence of the backrest, the curvature of the two curved paths of the seat and the backrest are designed so that the momentary pole around which the backrest turns when being inclined is not constant but, on the contrary, moves on a section of a spiral curve which preferably opens upward and proceeds in the same direction as the incline motion of the backrest.
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Cuomo Peter M.
Redman Jerry
Siemens Aktiengesellschaft
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