U.S. patent number 3,909,061 [Application Number 05/448,307] was granted by the patent office on 1975-09-30 for portable collapsible high chair.
Invention is credited to Michael J. Johnson.
United States Patent |
3,909,061 |
Johnson |
September 30, 1975 |
Portable collapsible high chair
Abstract
A portable collapsible chair structure which, when erected,
provides a full sized high chair for a small child, and when
collapsed, folds into a compact, case-like package for handling and
for storage. The enclosure of the case-like structure is useful for
carrying articles normally required for the care of a child. The
structure includes means permitting the chair back to be adjusted
in height, and the tray and armrests may be retained in their
stored position in the seat back when not required as when the seat
is used by a larger child.
Inventors: |
Johnson; Michael J.
(Gloversville, NY) |
Family
ID: |
23779771 |
Appl.
No.: |
05/448,307 |
Filed: |
March 5, 1974 |
Current U.S.
Class: |
297/17 |
Current CPC
Class: |
A47C
4/52 (20130101); A47D 1/004 (20130101); A47D
1/002 (20130101); A47D 1/023 (20170501) |
Current International
Class: |
A47D
1/00 (20060101); A47C 4/00 (20060101); A47D
1/02 (20060101); A47C 4/52 (20060101); A47C
004/00 () |
Field of
Search: |
;297/17,139,153,353 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Mitchell; James C.
Attorney, Agent or Firm: Stemple, Jr.; Dayton R. Bean; James
L.
Claims
What is claimed is:
1. A collapsible portable high chair structure comprising, in
combination, first and second shallow open topped box members each
including a generally rectangular bottom panel and side walls
mounted on and extending upwardly from the side edges of the bottom
panel, hinge means joining said boxes together along one side edge
adjacent the open tops thereof for movement between a closed
position in side-by-side relation with the two open tops overlying
one another and an open position extending at substantially right
angles to one another, a first closure panel hingedly mounted on
said first box for closing the open top thereof and defining a
seating surface, said first closure panel and said first box
cooperating to define a seat assembly having a storage compartment
under the seating surface, a second closure panel hingedly mounted
on said second box and defining a backrest surface for the chair,
said second tray and said second closure panel cooperating to
define a chair back assembly having a storage compartment therein,
a removable tray, means mounting said tray on said back assembly
and said seat assembly, said tray being adapted to be stored in one
of said storage compartments, and foldable legs mounted on said
seat assembly for movement between a collapsed position lying along
said seat assembly and an erected position projecting downwardly
from the corners thereof.
2. A high chair as defined in claim 1 further comprising means for
adjusting the height of said back assembly when said back and said
seat are in the open position.
3. The high chair as defined in claim 2 wherein said means
adjusting said back comprises a generally U-shaped bracket having
its base portion hingedly mounted on said seat assembly and having
its opposed arm portions extending along the side walls of said
back assembly, and guide means mounted on said back assembly and
slidably engaging said arms for supporting said back on said
bracket.
4. The high chair as defined in claim 4 further comprising
releasable latching means normally interlocking said guide means at
said arms, said latching means being operable to release said guide
and said arms to permit relative movement therebetween.
5. The high chair as defined in claim 2 wherein said folding legs
each comprise a pair of telescoping tubular members, and releasable
detent means for interlocking said tubular member against
telescoping movement relative to one another.
6. A collapsible portable high chair comprising, in combination,
generally rectangular back and seat portions, hinge means joining
said seat and back portions together adjacent the back of the seat
and the bottom of the back for movement between a collapsed
position wherein said seat and back are disposed in generally
parallel overlying relation and an erected position wherein they
extend at substantially right angles to one another, at least one
of said portions being in the form of a shallow box-like structure
having rigidly joined bottom and side panels and a closure panel
hingedly joined to and normally closing the open top thereof to
form a closed storage compartment in said at least one portion, a
removable tray assembly, means removably mounting said tray
assembly on said back and said seat, said tray assembly being
adapted to be stored in said storage compartment, and folding,
longitudinally telescoping legs mounted on said seat one at each
corner thereof.
7. The high chair as defined in claim 6 wherein said telescoping
legs are mounted for pivotal movement between an erected position
extending downwardly from said seat to support the chair and a
collapsed position extending along the bottom of said seat.
8. The collapsible portable high chair as defined in claim 6
further comprising adjusting means joining said hinge means and
said back, said adjusting means being operable to permit adjustment
of the height of said back.
9. The collapsible portable high chair as defined in claim 6
wherein both said back and said seat comprise shallow box-like
structures having a closure panel hingedly mounted thereon whereby
a storage compartment is formed in both said seat and said
back.
10. The collapsible portable high chair as defined in claim 9
wherein the closure panel on said seat defines the seating surface
of the chair and the closure panel on said back defines the
backrest surface of the chair.
11. The collapsible portable high chair as defined in claim 6
wherein said hinge means comprises a generally U-shaped bracket
having generally parallel arm portions extending along the side
edges of said back, said arm portions having their lower ends
joined by a generally straight portion hingedly joined to said seat
along the back edge thereof, guide means mounted on the side edges
of said back and slidably engaging said arms, and releasable latch
means for releasably joining said guide means to said arms at
selected positions therealong.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to collapsible portable chairs, and more
particularly to an improved collapsible portable high chair
structure for children.
2. Description of the Prior Art
Collapsible and folding chairs are well-known and widely used, the
most common of these being of the type having a seat portion which
pivots up either from the front or rear, thereby folding the entire
chair into a flattened condition having a height substantially
equal to or greater than the chair in its unfolded condition.
Folding high chairs for use by small children are also known, an
example of such a prior art device being found, for example, in
U.S. Pat. No. 2,971,570. A collapsible baby seat adapted to be
positioned on a conventional chair for use is found in U.S. Pat.
No. 2,089,090. The prior art collapsible high chairs, however, have
not met with widespread acceptance for various reasons. For
example, the complete chairs have generally not been capable of
folding into a neat, compact package which is convenient to carry,
pack for travelling, or to store when not in use. Further, they
have been relatively complicated and difficult to manipulate
between the unfolded and folded conditions, and generally have not
won the confidence of parents.
SUMMARY OF THE INVENTION
The foregoing and other disadvantages of the prior art are overcome
by the high chair of the present invention in which the seat
portion and the back portion are constructed as opposed
complimentary halves of a generally rectangular case similar to an
attache case or a small suitcase having a handle to facilitate
carrying. The back portion is mounted in a generally U-shaped
bracket which, in turn, is hingedly mounted on the back edge of the
seat portion. In the erected position, the back may be adjusted
vertically between the arms of its supporting bracket to adjust the
height of the chair back.
The seat and back portions are each constructed as shallow
drawer-like box structures both of which are normally closed by
hinged closure panels to form closed storage compartments in the
chair seat and back. The closure panel which is hingedly mounted on
the seat portion forms the seating surface of the chair, while the
panel hinged on the back portion forms the backrest surface. A
foldable tray and armrest assembly is normally stored in the back
storage compartment, and may be removed and quickly assembled onto
the U-shaped bracket and supported on the sides of the seat
assembly. A folding, telescoping leg is mounted at each corner of
the seat assembly, with the legs being adapted to fold along the
respective side edges of the seat bottom when not in use.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other features and advantages of the invention
will become apparent from the detailed description contained
herein, taken in conjunction with the drawings in which:
FIG. 1 is a side elevation view of a high chair according to the
present invention, shown in the erect condition and with the chair
back illustrated in an alternate position in phantom lines;
FIG. 2 is a front elevation view of the structure shown in FIG.
1;
FIG. 3 is a perspective view of the chair in the fully collapsed
condition;
FIG. 4 is a sectional view taken on line 4--4 of FIG. 3;
FIG. 5 is a view of the structure of FIG. 4 shown in the partially
erected position;
FIG. 6 is a bottom plan view of the collapsed chair;
FIG. 7 is a top plan view of the collapsed chair;
FIG. 8 is a side view, on an enlarged scale of the collapsed chair,
with certain portions broken away to more clearly illustrate other
parts;
FIG. 9 is a fragmentary sectional view taken on line 9--9 of FIG.
8; and
FIG. 10 is a fragmentary sectional view taken on line 10--10 of
FIG. 9.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings in detail, a collapsible, portable
high chair according to the present invention is indicated
generally by the reference numeral 10 and includes a seat assembly
12 and a backrest assembly 14 supported on a plurality of foldable,
telescoping legs 16 mounted on the bottom of seat assembly 12. A
folding tray assembly 18 is mounted on the chair and may be removed
and collapsed for storage in the backrest assembly 14. The backrest
14 includes a generally U-shaped mounting bracket having a bottom
beam portion 20 mounted, by hinge 22 on the back edge of the seat
assembly 12. The bracket also includes a pair of parallel side arms
24, 26 which are generally C-shaped in cross section forming a
track which slidably supports an elongated guide member 28 mounted
one on each side wall 30 of the backrest assembly 14.
The backrest assembly 14 consists of a shallow drawerlike box
structure made up of the two side walls 30, end walls 32, 34, and a
bottom wall 36 which defines the top surface of the chair in the
collapsed condition shown in FIGS. 3 and 7, and forms the rearmost
surface of the chair back in the erected position. The open end of
the box is normally closed by a panel 38 mounted, by hinge 40 on
the bottom wall 34, which panel is normally retained in a closed
position by a spring catch indicated generally at 42. The panel 38
normally forms the backrest surface of the chair, and cooperates
with a divider 46 to divide the interior of the backrest assembly
into an upper storage compartment 44 which houses the tray 18 and a
lower compartment 45 for storing the tray support arms 48 and 102,
as well as other articles normally required for the care of a small
child. A flexible carrying strap 50 mounted on the top wall 32 is
provided for carrying the collapsed chair.
The seat assembly 12 also consists of a shallow drawer-like box
structure having a bottom wall 52 with front and back walls 54, 56
and side walls 58, 60 projecting upwardly from the side edges of
the bottom wall to define a structure substantially complimentary
to the box structure of the backrest assembly. Also, the seat
assembly is provided with a top panel 62 mounted along its rear
edge by a hinge 64 to the back wall 56 and normally retained in
position closing the open top of the structure by the spring clip
assembly 66. The panel 62 defines the seating surface of the high
chair and forms a closure cover for the storage compartment 68 in
the seat assembly 12. A plurality of feet 69 are mounted on the
wall 56 and the bracket portion 20 to support the chair on a
surface when the chair is in the collapsed condition. The feet 69
are arranged in opposing pairs, one on member 20 and one on wall
54, and engage one another to act as stops to limit relative
movement of the seat and back portions of the chair as best seen in
FIG. 5. A conventional luggage latch, or lock 61 may be employed to
releasably retain the chain in the collapsed condition.
Four U-shaped brackets 70 are mounted on the bottom panel 52, one
adjacent each corner thereof, and a pin 72 extending through the
downwardly depending legs of the brackets 70 pivotally support the
upper ends of the telescoping leg assemblies 16. The respective
legs 16 each comprise an upper larger tubular portion 74 and a
smaller lower portion 76 telescoping into the portion 74. A spring
loaded detent pin 78 releasably retains the two portions 74, 76 in
the expanded position shown in FIGS. 1 and 2, and may be manually
depressed to permit the legs to be telescoped together to the
position shown in FIGS. 4-6 for storage and transportation.
As best seen in FIGS. 1 and 2, the respective legs 16 are retained
in the erected position by an over-center linkage assembly
consisting of a angle bracket 80 mounted on the bottom surface of
panel 52 and a pair of arms 82, 84 having one end pivotally
connected by a pin 86. The arm 82 has its other end pivotally
connected by a pin 88 to the angle bracket 80, and the arm 84 has
its other end pivotally connected by a pin 90 to the tubular leg
portion 74. A tab 92 integrally formed on the arm 82 permits the
linkage to be forced over-center before stopping further pivotal
movement between the two arms, thereby retaining the legs against
collapse until the linkage is again forceably moved back through
the over-center position to permit the linkage to collapse. This
structure, per se, is conventional and various modifications and
alternate constructions will be apparent.
Referring again to FIGS. 1 and 2, the tray assembly 18 consists of
a substantially flat panel 94 having a pair of open-ended channel
members 96 mounted on its bottom surface, one along each end
thereof. Each of the channels 96 support one end of the sliding
support arms 48, and the arms 48 each have a contoured opening 98
formed in the opposite ends thereof for receiving the englarged
head of a tray support pin 100. The forward end of the tray
assembly is supported by a pair of elongated rod members 102 each
having a hook-shaped portion 104 on one end adapted to be passed
through and aperture 106 in the wall members 58, 60 and having its
other end adapted to extend horizontally through an aperture in the
forward end of the tubular channel members 96. If desired, the arms
102 may be permanently attached to the tubular members 96, in which
case the hook portion 104 might consist of a simple inwardly turned
horizontal portion adapted to be fit through the aperture 106.
The arms 48 are preferably adapted to be completely removed from
the channels 96 for storage, and a spring biased detent button 110
mounted on the side of channel 96 is adapted to cooperate with
openings 112 in the forward end of the arms 48 to permit adjustment
of the panel 94 toward and away from the backrest assembly 14. Arms
48 may be completely withdrawn from the channels 96 for storage
within the lower compartment 45 of the backrest assembly. Arms 102
are also stored within the chamber 45 when not permanently attached
to the channels 96.
Referring now to FIGS. 8-10, the structure for adjusting the height
of the backrest assembly will be described. The sliding guide
member 28 is mounted on the wall 30 by suitable fasteners such as
rivets 114 extending through the inwardly turned flange portion 116
of the guide. A pair of brackets 118, 120 are mounted, as by spot
welding, within the hollow interior of the channel-shaped guide 28,
with the brackets 118, 120 supporting and acting as guides for an
elongated rod 122. The rod 122 is resiliently urged in the upward
direction as seen in FIG. 8 by a spring 124 positioned between the
bracket 118 and a washer 126 mounted on and fixed against upward
movement on the rod 122. A button 128 is provided on the end of rod
122 projecting above the guide 28 in position to be manually
depressed, against the force of spring 124.
The bottom end of rod 122 has a horizontal opening 130 extending
therethrough for receiving a laterally extending rod 132. A latch
member 134 is mounted for limited pivotal movement on each end of
the rod 132 by a pin 136. A pair of washers 140 are mounted on each
end of the rod 132, one adjacent the rod 122 and one adjacent the
bracket 134, and a coil spring positioned therebetween urges the
two washers away from one another to resiliently bias the bracket
so that its bottom surface 142 is in the horizontal position as
seen in FIG. 10 when the chair back is in the upright position. In
this position, the ends of the brackets 134 project through an
opening 144 in the side wall of guide member 28 and into one of a
plurality of vertically spaced openings 146 of the respective arms
24, 26 of the U-shaped bracket 20.
Again referring to FIG. 8, it is seen that, by depressing the
button 128 to thereby force the rod 122 downward, the brackets 134
will be cammed upward about their respective pivots 136 by contact
of the bottom surface 142 with the opening 144. This pivotal
movement withdraws the brackets 134 from the openings 146, thereby
permitting relative sliding movement between the respective guide
members 28 and the cooperating arms 24, 26, and permitting the
height of the backrest to be adjusted as desired. Release of the
button 128 will permit the rod 122 to be returned by spring 124 to
its fully raised position, thereby permitting the springs 141 to
pivot the brackets 134 about the pins 136 to project the brackets
into an opening 146 as soon as such an opening is aligned with the
opening 144.
It is also contemplated that the general mode of operation of this
backrest adjustment assembly may be reversed so as to operate when
the button 128 is lifted to pivot the brackets downward. This
latter arrangement may be preferred when the backrest assembly is
constructed of relatively heavy material, the weight of which would
tend to force the brackets 134 downward in the embodiment just
described, which tendence could result in unintentional lowering of
the backrest.
While I have disclosed and described a preferred embodiment of my
invention, I wish it understood that I do not intend to be
restricted solely thereto, but that I do intend to include all
embodiments thereof which would be apparent to one skilled in the
art and which come within the spirit and scope of my invention.
* * * * *