U.S. patent application number 10/571742 was filed with the patent office on 2006-12-28 for device for adjusting the inclination and consequently the height of the arms with respect to the plane of the seat of a chair.
Invention is credited to Rinaldo Zuccato.
Application Number | 20060290190 10/571742 |
Document ID | / |
Family ID | 34260047 |
Filed Date | 2006-12-28 |
United States Patent
Application |
20060290190 |
Kind Code |
A1 |
Zuccato; Rinaldo |
December 28, 2006 |
Device for adjusting the inclination and consequently the height of
the arms with respect to the plane of the seat of a chair
Abstract
The invention concerns a device for adjusting the inclination
and, consequently, the height of the arms (2) with respect to the
plane of the seat of a chair. Such a device is suitable for being
applied in particular to office chairs and is characterized in that
it consists of a gas spring (5), coupled with a lever arm (6), so
as to form a link mechanism fitted between the arm and the
back.
Inventors: |
Zuccato; Rinaldo; (Carre',
IT) |
Correspondence
Address: |
BUCKNAM AND ARCHER
1077 NORTHERN BOULEVARD
ROSLYN
NY
11576
US
|
Family ID: |
34260047 |
Appl. No.: |
10/571742 |
Filed: |
September 1, 2004 |
PCT Filed: |
September 1, 2004 |
PCT NO: |
PCT/EP04/09719 |
371 Date: |
March 13, 2006 |
Current U.S.
Class: |
297/411.36 |
Current CPC
Class: |
A47C 1/03 20130101 |
Class at
Publication: |
297/411.36 |
International
Class: |
A47C 7/54 20060101
A47C007/54 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 9, 2003 |
IT |
V12003A000173 |
Claims
1. Device for adjusting the inclination and, consequently, the
height of the arms with respect to the plane of the seat of a
chair, to be applied in particular to office chairs, consisting of
a gas spring, coupled with a lever arm, so as to form a link
mechanism fitted between the arm and the back, said two elements
being hinged together at their end points (7), the device wherein
the pins (8, 9) of said two elements are idly fitted on the rigid
wall (3) of the back (4).
2. Device, according to claim 1, wherein it supports the arched
structure (2), which supports one or both of the arms.
3. Device, according to claim 2, wherein the arched structure (2)
is applied and supported on the lever arm (8), in a position
opposite the spring (5) through the screws (10), outside the wail
(3) and partially penetrating into the back through the opening
(11) made on said wall.
4. Device, according to claim 3, wherein with the variation in
stroke of the spring (5), i.e. with the variation in distance
between the two pivot points (7, 8) of the spring itself, the
rotation of the lever arm (6) on the pin (9) and therefore the
desired inclination of the arms (2) is carried out.
5. Device, according to claim 1, wherein the actuation of the gas
spring (5) is obtained mechanically through a flexible wire (12)
connected to a button (13), arranged on one of the arms.
6. Device, according to claim 1, wherein the actuation of the gas
spring (5) is carried out with an electronic command.
Description
[0001] The present finding concerns a device for adjusting the
inclination and, consequently, the height of the arms with respect
to the plane of the seat of a chair.
[0002] Seats for office use or for resting, equipped with devices
that are used to increase the comfort of the user are well
known.
[0003] In the current state of the art such devices are applied to
the chair with the function of adjusting the inclination of the
back whereas, usually, the arms remain fixed to the seat and whilst
being height-adjustable, they are integral with the seat and,
consequently, with the support frame of the chair itself.
[0004] Such a construction, in chairs with variable inclination of
the back, gives the drawback of a variation in the angle defined
between the resting zone of the forearm and the person's back, to
the great detriment of comfort.
[0005] To overcome such a drawback various mechanisms have been
devised including, for example, patent document no. VI2002A000227,
filed on 22, Oct. 2002, to the same applicant, where a chair is
described equipped with a device for moving the arms consisting of
a bracket, applied to the back, on which are idly fitted a block
that supports the structure of the arms and a threaded pin that
that engages with a threaded bush idly inserted onto the body of
said block: said two elements are hinged together at an
articulation point consisting of a sleeve idly mounted on said
block and on which the shank of said pin is screwed.
[0006] The purpose of the present finding is that of making a chair
in which the arms can be adjusted in height with respect to the
plane of the seat and in which it is possible to keep the angle
formed between the forearm and the back of the person unchanged as
the inclination of the back varies; the relative moving device must
be simple to construct, it must be made up of a limited number of
elements and it must not require any maintenance.
[0007] Such a purpose is obtained with a device that simply
consists of a gas spring, coupled with a lever arm, so as to form a
link mechanism between the arm and the back.
[0008] Operatively, with the variation in stroke of the gas spring,
carried out by the user through a manual command, of the mechanical
or electronic type, the rotation of the link mechanism and
therefore the rotation/inclination of the arm is determined.
[0009] The small size of the entire device allows it to be
positioned on the back without compromising the seating comfort of
the person sat down.
[0010] The characteristics of the finding shall become clearer
through the description of a possible embodiment thereof, given
only as a non-limiting example, with the help of the attached
tables of drawings, where:
[0011] FIG. 1 (Table I) represents an overall view of a chair
equipped with the device according to the finding;
[0012] FIG. 2 (Table II) represents a front elevated section view
of the back equipped with the device according to the finding;
[0013] FIG. 3 represents a detailed view, according to the
direction "X" of FIG. 2;
[0014] FIG. 4 (Table III) represents a lower perspective view of
the back according to FIG. 2;
[0015] FIG. 5 (Table IV) represents a front perspective view of the
back according to FIG. 2.
[0016] As can be seen in the figures, the device according to the
finding, wholly indicated with reference numeral 1, supports the
arched structure 2 of the arms and is applied to the inner part of
the rigid wall 3 of the back 4.
[0017] The device 1 is in the form of an articulated link mechanism
made up of a gas spring 5 and a lever arm 6 hinged together at
their end points 7; said link mechanism is idly fitted onto the
wall 3, with the pin 8, at the spring and with the pin 9 at the
lever arm, respectively.
[0018] Moreover, on the lever arm 6, in a position opposite the
spring 5, the arched structure 2 is applied and supported, outside
the wall 3 and partially penetrating into the back through the
opening 11 made on said wall.
[0019] Operatively, as can easily be seen by observing the figures,
with the variation in stroke of the spring 5, i.e. with the
variation in distance between the two pivot points 7 and 8 of the
spring itself, the rotation of the lever arm 6 on the pin 9 and
therefore the desired inclination of the arms 2 is carried out.
[0020] The actuation of the gas spring 5 can, in a preferred
embodiment, be obtained mechanically through a flexible wire 12
connected to a button 13, arranged on one of the arms.
[0021] Of course, embodiments that are different from the one
described are possible, according to the size and type of back of
the chair, without, for this reason, departing from the scope of
the claims, defined hereafter.
* * * * *