FR2558360A1 - Improvements to chairs, particularly office chairs - Google Patents

Abstract

Chair characterised by the addition of lateral armrests in the form of a crescent, which can be adjusted in terms of height in order to permit supporting of the forearm or forearms, the upper part of the arm or arms being vertical, and alongside the chest. These lateral armrests are connected at their centre to a lumbar support (back) which is itself adjustable independently of the adjustment of the lateral armrests.

Description

 People who spend a large part of their life seated, undergo without realizing it, a continuous compression of their spinal column.

 Nothing on conventional seats in fact avoids this problem. The fact of leaning against a backrest does not prevent the compaction, but would rather favor it because of the position of sinking on the seat.

 The armrests, when they exist either, have no backwashing effect, they only rest the arms.

If we take the case of people working in an office, we see 1) - For those who type on a keyboard, it is their
unable to rest their backs, even when they are
belch at times to tire of going against their
file or put the elbows on their work table,
it may relax them but it has no detas-
health on their spine.

2) - For those who write, that they cannot either
rest their backs, even if their arms are resting on their
table as armrests, the compacting of the back conti-
naked.

 The subject of the invention is a seat having supports such as to avoid these drawbacks.

The seat according to the invention is characterized in that it has a small backrest only for the lumbar region re, and horizontal lateral arms, both, fixed in their middle on a vertical support, and adjustable on this support
The invention also relates to the following arrangements: a) The lateral arms form a part curved towards
the front in the shape of a cr01 is adjustable in height
which allows the forearms to be placed on these supports,
depending on the length of each person's arms,
arms vertically supported on the elbows serve -
which is fundamental in the invention - flying buttresses
of the spine and thereby neutralize the cup
is lying.

b) - The lumbar backrest is adjustable at the same time as the
side arms but it also has the option of being
adjustable in height with respect to these arms, which allows
puts each person to adjust this folder according to their
lumbar region0 c) - The horizontal surface of the lateral supports is sufficient
te to allow the support of the forearms in different
angular positions0
The invention is illustrated by the appended drawing, in which: - Figure 1 schematically presents the problem o - Figures 2 and 3 show an attitude, among several
possible, dgune person with the seat of the invention.

- Figure 4, illustrates in perspective, the seat according to the invention.

- Figure 5, allows to see the bottom of iwan of the supports
lateral arms, transverse adjustment inwards
or the outside of the seat, according to the body
that of the user in order to have the forearm (s)
along the bust, the upper part of the arms being worm
ticale.

Referring to Figure 1, we see that on a usual seat, the back (back) would rather encourage the compression of the back, by ltengoncement of the bust of the person on the seat0
If the sitting position on the classic seat is prolonged, it can conceive a manifestation of fatigue in the back, fatigue which, accumulating over the months, can cause pain, this pain may subsequently become chronic0
With the seat of the invention, as shown in FIGS. 2 and 3, the spine is supported and relieved each time a support is requested, for example for writing.

The seat according to the invention, as can be seen in FIG. 4, is characterized in that it includes, in perspective d) - in 1, a backrest only for the lumbar region and
lateral arms 2, adjustable 4, at support height
for the elbows, e) - a flat surface of the lateral arms 3, which allows the app-
then a forearm on either side, or both,
according to the need, position which is taken thereafter at
tomatically and which provides relief every time
ment of the back, therefore of the vertebral compaction. I1 is housed
only preferable at each moment of respite, to ask
his or her arms on the supports, rather than letting oneself
will go against a back file, which otherwise
do not strut the spine.

f) - The seat of the invention allows an adjustment 5, of the
lumbar back height, independent adjustment
during height adjustment 4, side arms.

g) - The next Invention seat has supports on
the lateral arms which are adjustable horizontally,
Figure 5, in width by transverse lights
at the fixing points of these supports, in order to allow
to all the templates to have the forearms posed near
from the body.

According to the invention, the improvements apply
on all existing seats, whether they are
with fixed, mobile or swivel feet.

Claims (5)

 R E V E N D I C A T I O N S  upper arms, kept vertical.  allow support of the forearm (s), so that the  the same vertical support and adjustable in height for  empty and in that it has lateral arms, sliding on  sier is positioned in the lumbar region of lindi-  against a vertical support, characterized in that the back  1) Seat with a sliding backrest in the middle 2) - Seat according to claim 1, characterized in that  the lateral arms of the seat are crescent-shaped. 3) - Seat according to claim 1, characterized in that  the supports on the lateral arms of the seat are equal  adjustable in a horizontal plane, in order to  cer the forearm (s) of the person seated  as close as possible to the bust, which is therefore  held in vertical position. 4) - Seat according to claim 3, characterized in that  the means for adjusting the lateral arms in a plane  horizontal, can be achieved by supports  seat arms having lights in which  feels fixed the adjustment screws. 5) - Seat according to claim 1, in that the regulations  lumbar backrest, lateral arm height  width of the seat, the width between the side arms  of the head office, are independent of each other.