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Examination chair

Imported: 24 Feb '17 | Published: 06 Jan '04

Ivan Boruta, Vilem Neuman

USPTO - Utility Patents

Abstract

An examination chair for gynecological and urological examinations, comprising a chair part (

14) with a seat (

22) and a backrest (

24), and a support column (

12) that has a column head which can be adjusted heightwise through an actuator (

20), on which the chair section is mounted, the backrest (

24) being pivotally mounted on the column head (

18) for movement about a horizontal pivot axis (

28) and being so pivotable by a drive mechanism (

30), the seat (

22) being pivotally mounted on the backrest (

24) for movement about a second pivot axis (

36) parallel to the axis (

28) and also connected to the backrest (

24) by a four-corner linkage (

38) that includes both pivot axes (

28,36), a link axis (

40) fixed to the seat, and a free link axis (

42), the link (

46) of the linkage (

38) connecting the first pivot axis (

28) to the free axis (

42) being a first lever arm of a two-armed control lever (

48) and cooperating with a stop (

54) secured to the column to determine the fundamental position of the seat (

22), the second lever arm (

50) of the control lever (

48) being designed to cooperate with a stop (

60) on the backrest.

Description

Further features and advantages of the invention will be apparent from the following description which in connection with the accompanying drawing, explain the invention by way of an exemplary embodiment. The drawings are:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1, a schematic side view of an examination chair in a first position of the seat and backrest,

FIG. 2, a view corresponding to FIG. 1, but with the seat and backrest in a second position,

FIG. 3, a view corresponding to FIG. 1, but with the seat and backrest in a third position,

FIG. 4, a view corresponding to FIG. 1, but with the seat and backrest in a fourth position, and

FIG. 5, a diagram for explaining the region in which either only the backrest or the backrest together with the seat is pivoted.

Claims

1. An examination chair, especially for gynecological and urological examinations, including:

2. The examination chair according to claim 1, wherein the pivotal movement of the level arms out of its position which corresponds to a fundamental position of the seat is limited by a second stop fixed to the column head and that the stop on the backrest is deflectable against a spring force.

3. An The examination chair according to claim 1 or 2, wherein the pivot drive is a linear drive having one end connected to the column head and another end pivotally connected with the backrest.