U.S. patent number 3,602,548 [Application Number 04/867,556] was granted by the patent office on 1971-08-31 for upholstery construction for adjustable chairs.
This patent grant is currently assigned to Surgical Mechanical Research, Inc.. Invention is credited to Guenter A. Grams.
United States Patent |
3,602,548 |
Grams |
August 31, 1971 |
UPHOLSTERY CONSTRUCTION FOR ADJUSTABLE CHAIRS
Abstract
An upholstery construction particularly adapted for chairs used
by doctors' patients, such chairs having a head-back support, a
seat support and a leg support which are pivotally interconnected
for relative angular movement between a position in which the
patient is supported in a sitting position and a position in which
the patient is supported in a reclined position, the upholstery
having corresponding cushions which are interconnected and
relatively movable to conform to the chair; the upholstery
including a longitudinally extending centrally disposed strap
construction connected to the upholstery cushions to permit limited
longitudinal movement and is yieldably secured to the head-back,
seat and leg supports to permit change in the relative position of
the cushions to correspond to change in angular relation of the
supports.
Inventors: |
Grams; Guenter A. (Costa Mesa,
CA) |
Assignee: |
Surgical Mechanical Research,
Inc. (Newport Beach, CA)
|
Family
ID: |
25350014 |
Appl.
No.: |
04/867,556 |
Filed: |
October 20, 1969 |
Current U.S.
Class: |
297/452.16;
297/410; 297/452.62; 5/932 |
Current CPC
Class: |
A47C
7/18 (20130101); A47C 31/11 (20130101); Y10S
5/932 (20130101) |
Current International
Class: |
A47C
31/00 (20060101); A47C 7/18 (20060101); A47C
31/11 (20060101); A47c 007/02 (); A47g
009/00 () |
Field of
Search: |
;312/454-457 ;5/341 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Gilliam; Paul R.
Claims
I claim:
1. An upholstery construction for patients' chairs having a
head-back supporting member, a seat member and a leg-supporting
member, said members being rigid, spaced from each other and
relatively movable between a position to receive a patient in a
seated position and a position to receive the patient in a reclined
position, said upholstery construction comprising:
a. a padded cushion means extending the combined lengths of the
chair members, said cushion means having foldable portions of
reduced thickness spanning the space between the chair members to
permit folding of the cushion means in conformity to the chair
members throughout the range of their relative movement; and
b. a strap structure extending lengthwise of and secured to said
cushion means and having stretchable portions extending between
adjacent edges of the chair members, over said edges to the back
sides of said chair members and attached thereto, said stretchable
portions yieldably securing the cushion means to the chair members
to compensate for changes in angular relation and spacing of the
chair members.
2. An upholstery construction, as defined in claim 1, wherein:
a. the strap structure further includes a guide portion exposed at
the outer side of the cushion covering the head-back member and
extending over the top thereof for attachment thereto;
b. and a headrest is slidably adjustable on the guide portion.
3. An upholstery construction, as defined in claim 1, wherein:
a. said strap structure includes a guide strap inserted through the
midportion of the head-back cushion to the front side thereof and
extending over the head portion thereof for attachment to the
chair;
b. and a headrest is slidably supported by the guide strap.
4. An upholstery construction, as defined in claim 1, wherein:
a. the foldable juncture between the seat and leg cushions includes
portions folded into confronting relation to permit limited
movement of the seat and leg cushions to and from each other.
Description
BACKGROUND AND SUMMARY OF THE INVENTION
This invention is directed to upholstery which is particularly
adapted for use in conjunction with my copending application, Ser.
No. 824,819, filed May 15, 1969, for a Patient's Chair, in which
the chair elements, comprising a head-back support, seat support
and a leg support are interconnected for relative angular movement
between a position in which a person is supported in a seated
position and a position in which the person is supported in a
reclined position.
The invention is summarized in the following objects:
First, to provide an upholstery construction for foldable chairs
such as are used in doctors' offices in which three cushions,
corresponding to the three supporting portions of the chair, at
least a pair of which is joined together by special foldable
portions which permit limited change in the spatial relation of the
cushions as the chair is folded or extended.
Second, to provide an upholstery construction of the type indicated
in the preceding object which incorporates a novel strap structure
extending the length of the connected cushions, centrally thereof,
the strap construction including stretchable loop elements adapted
to extend between and under selected ends of the chair elements to
secure the cushions in place, yet permit the limited movement with
respect to the chair elements.
Third, to provide an upholstery construction for patients' chairs
which may be readily attached thereto or removed therefrom.
Fourth, to provide an upholstery construction as indicated in the
preceding objects which incorporates a novelly arranged headrest
which is slidably mounted on a portion of the strap structure.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view of the upholstery construction, shown in its
flat condition, separated from the chair on which it is
mounted.
FIG. 2 is an edge view thereof.
FIG. 3 is a bottom view thereof.
FIG. 4 is an enlarged longitudinal fragmentary sectional view of
the head-back cushion, taken through 4--4 of FIG. 1, the cushion
being shown attached to the head-back supporting member of the
chair, and also showing an attachment strap in edge elevation.
FIG. 5 is a similar enlarged fragmentary longitudinal sectional
view of the head-back cushion and the seat cushion, taken through
5--5 of FIG. 1, and showing the cushion mounted on the head-back
supporting member and the seat member of a patient's chair, and
also showing the securing strap in edge elevation, the members of
the patient's chair being shown in their relative positions assumed
when the chair is arranged to support a patient in a seated
position.
FIG. 6 is a fragmentary sectional view, similar to FIG. 5, showing
the cushion and the chair members in the position assumed when
supporting a patient in a reclined position.
FIG. 7 is another enlarged fragmentary sectional view of the seat
cushion and leg cushion, shown mounted on the seat member and
leg-supporting member of a patient's chair, also with the securing
strap shown in edge elevation.
FIG. 8 is a fragmentary sectional view, similar to FIG. 7, showing
the cushions and the chair members in their relative positions
assumed when the patient is supported in a reclined position.
FIG. 9 is a fragmentary bottom view, taken from 9--9 of FIG. 6,
showing one of the attachment loops and its manner of connection to
a member of the chair.
The upholstery construction is intended primarily to be mounted on
the patient's chair more fully described in the aforementioned
copending application. The upholstery construction includes a
head-back cushion 1, intended to cover the head-back-supporting
member 2 of the patient's chair. The cushion 1 includes a narrow
end portion 3 which underlies the neck and head of a patient.
The cushion 1 is joined to a seat cushion 4, which overlies the
seat member 5 of a patient's chair. Adjacent margins of the
cushions 1 and 4 form connecting portions 6, joined by a seam
7.
A leg cushion 8 is provided which overlies the leg supporting
member 9 of the patient's chair. Adjacent margins of the seat
cushion 4 and leg cushion 8 are provided with confronting folded
connecting portions 10, joined by a seam 11.
As indicated in FIG. 1, each of the cushions 1, 4 and 8 includes a
bottom sheet 12 and a top sheet 13, preferably formed of plastic
material. The sheets receive therebetween foamed plastic padding
14. In forming the cushions, portions of the two sheets are pressed
together to form a predetermined pattern and the intervening foamed
plastic padding is compressed in these regions to produce a quilted
effect. The two sheets and the padding are bound together by
heat-sealing or by use of appropriate adhesives.
The upholstery construction is provided with a longitudinally
extending strap structure which includes a headrest guide strap 15,
which is essentially nonstretchable. The headrest strap emerges
from the head-back cushion through a slit 16 located midway between
the ends of the cushion and centered relative to the lateral edges
thereof. The exposed portion of the headrest strap 15 extends over
the upper end of the head-back supporting member 2 and is secured
thereto by a clamp 17. Slidably mounted on the guide strap is a
headrest 18 which comprises a base 19 and a padding 20, having a
suitable covering. Attached to the base 19 is a cross strap 21,
which fits underneath the guide strap 15.
The lower end of the guide strap which is under the head-back
cushion is joined to an elastic strap 22, secured by stitching 23
to the seat cushion 4. The elastic strap has sufficient extra
length that it may be folded into a loop 24, illustrated in FIGS. 5
and 6. The loop 24 is folded under the lower edge of the
head-back-supporting member 2 and receives a transverse retainer
pin 25, secured by screws 26.
The elastic strap continues under the seat cushion 4 and the leg
cushion 8 and is joined to the leg cushion by additional stitching
23. The elastic strap 22 is provided with an intermediate loop 27
which may be integral therewith or attached thereto. The
intermediate loop is adapted to pass under the forward edge of the
seat member 5 and is provided with a second retainer pin 25,
secured by screws 26. The elastic strap is provided with a terminal
loop 28, which may be stitched thereto or integral therewith. The
terminal loop passes under the lower or extended margin of the
leg-supporting member 9 and is secured thereto by a third retainer
pin 25 and screws 26. To retain the lower margin of the leg cushion
8 in place, a cross strap 29 is provided, through which the elastic
strap 22 extends.
The cushions 1, 4 and 8 may be mounted directly on the respective
chair members 2, 5 and 9, which may be formed of wood or of
high-strength plastic material; or, underpads 30, 31 and 32 may be
interposed.
Operation of the upholstery construction is as follows:
The upholstery is easily secured to a chair of the type shown in my
copending application by placing the cushions on the chair and
securing the end of the headrest strap 15 by the clamp 17. The
retainer pins 25 are inserted in the 24, 27 and 28, then by
stretching the loops the extremities of the loops may be snapped
behind the pairs of screws 26.
It will be noted that the connecting portions 6 have narrow
quilting to increase the flexibility in the adjacent regions of the
cushions 1 and 4. The connecting portions 10 likewise have narrow
quilting.
It is desirable, as indicated in the copending application, that
the head-back supporting member 2, seat member 5 and leg-supporting
member 9 be transversely concave. This poses no problem in the
connection between the head-back and seat members because the
connecting portions 6 fold inwardly. However, the connecting
portions 9 fold outwardly; consequently, when the upholstery is in
the flat condition shown in FIGS. 1, 2 and 3, the portions 10 are
folded into confronting relation and increase in width toward their
lateral margins. Thus, the cushions 4 and 8 conform to the
concave-transverse contours of the seat member 5 and leg-supporting
member 9 and move slightly to and from each other as the members 5
and 9 move angularly, the side margins of the cushions having
greater relative movement than the center.
It will be noted that the headrest strap 15 bears against the
underlying cushion to provide sufficient frictional restraint on
the cross strap 21, that the headrest 18, while readily adjustable,
remains wherever positioned.
The present embodiment of this invention is to be considered in all
respects as illustrative and not restrictive.
* * * * *