Mechanism for tilting chairs
Work chair having a vertically adjustable chair support
Pivotally and slidably connected cantilevered swivel seat
Vertical adjustment support device for a vehicle seat Patent #: 4659052
ApplicationNo. 07/043316 filed on 04/28/1987
US Classes:297/300.5, Coil spring248/575, Adjustable preloading of resilient means297/303.4, Coil spring297/326About stationary horizontal pivot
ExaminersPrimary: McCall, James T.
Attorney, Agent or Firm
International ClassesA47C 3/02 (20060101)
A47C 3/026 (20060101)
Foreign Application Priority Data1986-05-06 JP
AbstractA cushioning mechanism suitable for use with an office chair is disclosed. A seat frame is connected pivotally to the front of a support frame for swinging motion about the pivotal connection. The swinging motion of the seat frame is converted into the translation thereof by means of a link mechanism, and thus a cushioning member such as a coil spring incorporated in the support frame is compressed by the translation of the seat frame. Accordingly, even when the seat portion is made to swing by a large degree, the front of the seat portion is not greatly shifted in height, thereby enabling the user to sit in the chair comfortably.