US3909061A

US3909061A - Portable collapsible high chair

Info

Publication number: US3909061A
Application number: US448307A
Authority: US
Inventors: Michael J Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1974-03-05
Filing date: 1974-03-05
Publication date: 1975-09-30
Anticipated expiration: 1992-09-30

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.

Description

United States Patent [1 1 Johnson PORTABLE COLLAPSIBLE HIGH CHAIR [76] Inventor: Michael J. Johnson, 37 Highland Ter., Gloversvillc, NY. 12078 [22] Filed: Mar. 5, 1974 [21] Appl. No.: 448,307

[52] US. Cl. 297/17 [51] Int. Cl. A47C 4/00 [58] Field of Search 297/17, 139, 153, 353

[56] References Cited UNITED STATES PATENTS 1,673,988 6/1928 Nitti 297/17 X 2,091,733 8/l937 Hemminger et al. 297/353 2,971,570 2/l961 Vander Bush 297/17 3.516.709 6/1970 Nader 297/ l 53 14 1 Sept. 30, 1975 Prinulry E.\'aminer-.lames C. Mitchell Attomey, Agent, or Firm-Dayton R. Stemple, Jr.; James L. Bean 57 1 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, caselike 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.

11 Claims, 10 Drawing Figures U.S. Pateant Sept. 30,1975 Sheet 1 of3 3,909,061

r- F I I US. Patent Sept. 30,1975 Sheet 2 of3 3,909,061

U.S. Patent Sept. 30,1975 Sheet 3 of3 3,909,061

PORTABLE COLLAPSIBLE HIGH CHAIR BACKGROUND OF THE INVENTION l. 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 ofa 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 ofa 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.

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 l010 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'inthe 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

sidewalls

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 l2 A plurality of feet 69 are mounted on the wall 56 and the bracket portion 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 FlGS. 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 84has 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 overcenter 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 hookshaped 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 scribed. 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 laterallyextending 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 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, 26of 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.

lt 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 1 have disclosed and described a preferred embodiment of my invention, I wish it understood that 1 do not intend to be restricted solely thereto. but that 1 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.

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- shapcd 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 10 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

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 releasablyjoining said guide means to said arms at selected positions there-

Claims

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.

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.

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.

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.