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Publication numberUS3345959 A
Publication typeGrant
Publication dateOct 10, 1967
Filing dateAug 11, 1966
Priority dateAug 11, 1966
Publication numberUS 3345959 A, US 3345959A, US-A-3345959, US3345959 A, US3345959A
InventorsRobert S Linstead
Original AssigneeStructo Division
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Portable foldable table
US 3345959 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Oct. 10, 1967 R. s. LINSTEAD 3,345,959

PORTABLE FOLDABLE TABLE Filed Aug. 11, 1966 2 Sheet-Sheet 1 Oct. 10, 1967 PORTABLE FOLDABLE TABLE Filed Aug. 11, 1966 2 Sheets-Sheet 2 INVENTOR ROBERT S L 57540 C 03g fiat v R. s. LINSVTEAD I 3,345,959

3,345,959 PDRTABLE FOLDABLE TABLE Robert S. Linstead, Rockford, 111., assignor to Structo Division, King-Seeley Thermos Co., Freeport, 111., a corporation of Michigan Filed Aug. 11, 1966, Ser. No. 571,861 6 Claims. (C1. 108-119) This invention relates to a portable foldable table, and has for its principal object the provision of such a table, which, when folded, is much more easily portable than any previous designs in a home or on a patio, where storage space for such an item is usually rather limited, a further important feature being the ease with which the table can be folded after use and unfolded again when it is to be set up for use, the positive locking action obtainable with the present unique design making certain that when the table is set up for use it cannot possibly collapse and, when folded, is equally well locked up.

Among the features of the present invention that are considered of special importance are:

(1) Double use of a hook on the bottom of the table top to engage the cross portion on the upper end of one of the U-shaped legs of the supporting X-frame, for good support in set-up position and to snap over a flexible c-rossrod intermediate the ends of the other U-shaped leg of the X-frarne to lock the table top and folded legs in folded position, and

(2) Use of the cross-portion of one of the U-shaped legs of the supporting X-frame (a) as a foot for support of the grill in set-up position, or (b) as a handle in carrying the table in folded condition to and from the place of use, or (c) as a cross-member in hanging up the table in folded condition on a hook or nail on a wall.

The invention as illustrated in the accompanying drawings, in which FIG. 1 is a combination side view and perspective of the portable foldable table of my invention, as it appears when set up for use;

FIG. 2 is a side view taken from the left-hand side of FIG. 1;

FIG. 3 is a vertical section on the line 33 of FIG. 2;

FIG. 4 is an enlargement of the upper right-hand corner portion of FIG. 3, to better illustrate the locking action;

FIG. 5 is a side view of the table in folded condition;

FIG. 6 is a vertical section on the line 6-6 of FIG. 5,,

and

FIG. 7 is an enlargement of the central portion of FIG. 6, to better illustrate the locking action.

The 'same reference numerals are applied to corresponding parts throughout the views.

Referring to the drawings, the foldable portable table of my invention comprises a top 8 having cross-pieces 9 and 10 fastened to the under side thereof, the top being adapted to be supported on an X-frame 11-12, as shown in FIG. 1, and the X-frame being foldable substantially to parallel relationship to the top 8 as shown in FIGS. 5 and 6.

The longer leg 11 of the X-frame is generally U- shaped with its lower cross portion 13 adapted to rest on the floor or ground 14, while the upper ends 15, which are flattened in parallel planes, as indicated at 16, are pivoted at 17 to brackets 18 fastened, as at 19, to the bottom of the cross-piece 9. The other leg 12 of the X- frame is also generally U-shaped with its cross-portion 20 disposed uppermost and engaged in a double-pronged hook 21 mounted on and extending downwardly from the bottom of the other cross-piece 10, while the lower end of the arms 22 of this leg have rubber or plastic crutch tips 23 mounted thereon for non-skid engagement with the floor or ground 14. Small, generally triangular, brack- United States Patent 0 3 ,345,959 Patented Oct. 10, 1967 ets 24 riveted to the opposite side portions of leg 11 intermediate the ends thereof, as indicated at 25, carry a somewhat flexible and resilient cross-rod 26, which, at its opposite ends, extends through bearing holes 27 provided therefor in the opposite side portions of leg 11 to pivotally connect the legs 11 and 12 and permit the folding and unfolding of the table. Nuts 28 of a self-tapping type are applied to the projecting ends of the rod 26.

In operation, the hook 21 is designed to snap over the flexible and resilient cross-rod 26 in moving to and from the folded position shown in FIGS. 5 and 6, the operator using the cross-portions 13 and 20 as hand grips to spread the legs 11 and 12 apart in unfolding the table and to move these parts together in the folding operation. When the table is folded, as seen in FIGS. 5 and 6, the antiskid crutch tips 23 prevent slippage with respect to the floor if one chooses to lean the folded table against 'a wall for support. Usually, the cross-portion 13 is used as a handle in carrying the folded table about from one place to another, although the cross-portion 20 can also be used as a handle for that purpose more conveniently by a shorter person. In hanging the folded table up on a hook or nail on the wall, the cross-portion 13 is usually used. When the table is unfolded, it is a simple matter to insert the cross-portion 20 of leg 12 with a snap fit into the double pronged hook 21 for good rigid support of the table in its unfolded condition. The unique construction of the double pronged hook 21 accounts for the secure hold and the snap action in locking the cross-portion 20 in the hook, the hook being made from a single strip of spring steel, bent to a U-shape, the generally rectangular cross-portion -29 of the U serving as its attaching portion and having a single hole provided therein at the forward end through which a screw 30, the rounded head of which projects downwardly to serve as a detent located directly over the front end portions 31 of the two prongs of the hook, as clearly appears in FIG. 4, so that as one enters the rounded cross-portion 20 of the leg 12 into the hook 21 the rounded head of the screw 30 riding on the top of the cross-portion 20 of the leg 12 causes the book 21 to be sprung downwardly, as indicated in dotted lines in FIG. 4, relative to the front end of its cross-portion 29 held by the screw 30, enough to admit the cross-portion 20, after which the hook 21 snaps back into place, holding the cross-portion 20 securely locked behind the rounded head of the screw 30. In the hooking of the two pronged hook 21 over the cross-rod 26, the inclined outer edge portions 32 on the free end portions 31 of the two prongs of the hook slidably engaging the cross-rod 26 as the two legs 11 and 12 are being forced together, cause the rod 26 to be sprung downwardly enough to pass the free ends 31 of the two prongs whereupon the cross-rod 26 snaps upwardly into place behind these prongs, as seen in FIG. 7, securely locking the table in folded condition. To unfold the table, one need only pull the cross-portions 13 and 20 of the legs 11 and 12 apart, and there again the hook 21 is sprung outwardly relative to the front end of its cross-portion held by screw 30 enough to allow the crossrod 26 to move from behind the two prongs of the hook, or, if desired, one may press downwardly on the mid-portion of the cross-rod 26 with one hand while pulling outwardly on the cross-portion 13 of leg 11 with the other hand to facilitate unlocking of the legs from their folded position, and, of course, in that event there is less need for springing outwardly of the hook 21 relative to its fastened front end portion held by screw 30.

It is believed the foregoing description conveys a good understanding of the objects and advantages of my invention. The appended claims have been drawn to cover all legitimate modifications and adaptations.

I claim:

1. A foldable portable table comprising a top and a foldable X-frame thereunder for support thereof in its horizontal operative position, said X-frame comprising two generally U-shaped legs, the first of which has the upper ends of the arms thereof pivotally connected to the under side of said top on'one side of its center while the substantially horizontal cross-portion of the U at the lower end of this leg rests on the ground or floor, the second leg being of inverted U-form pivotally connected intermediate the ends of the arms thereof to the respective arms of the first leg intermediate the ends thereof, the lower ends of the arms of the second leg providing support of the top on the ground or floor While the substantially horizontal crossportion of this U at the upper end is detachably engaged in a substantially vertical hook provided on the under side of the top on the other side of its center and facing the pivotal connection of the first leg with the top, the X-frame upon disconnection of said hook from the cross-portion of said second leg being foldable to substantially flat form into compact substantially parallel relation to the top so that the cross-portion of one of said legs serves as a handle for portability of the folded table while the hook is detachably engaged over a substantially horizontal projection provided on one of said legs.

2. A foldable table as set forth in claim 1 wherein a substantially horizontal cross-rod extending through registering bearings provided on the arms of said two generally U-shaped legs forms the pivotal connection between said legs besides providing the last named substantially horizontal projection for detachable engagement with said hook in the folded condition of said table.

3. A foldable table as set forth in claim 1 wherein a substantially horizontal cross-rod extending through registering bearings provided on the arms of said two generally U-shaped legs forms the pivotal connection between said legs besides providing the last named substantially horizontal projection for detachable engagement with said hook in the folded condition of said table, said rod being flexible and resilient and engaging the hook at a point intermediate the ends of said rod, and said hook having a cam surface thereon for deflection of said rod preparatory to its snapping onto the hook.

4. A foldable table as set forth in claim 1 wherein the hook is of a double pronged type, the same comprising a generally U-shaped body of spring steel sheet material bent to generally U-shape providing an elongated generally rectangular attaching portion adapted to be fastened to the under side of the table top and downwardly bent side portions of hook form defining the prongs both facing one end portion of said cross-portion, which is the end portion fastened to the under side of the table top by a fastener having a downwardly projecting rounded head located directly over the outer ends of said prongs, the body portion being flexible downwardly by flexing of the attaching portion relative to the fastener, whereby the rounded head of said fastener serves as a detent for detachably securing the cross-portion of the second leg in the hook when the said cross-portion is snapped into place therein past said head.

5. A foldable table as set forth in claim 2 wherein the hook is of a double pronged type, the same comprising a generally U-shaped body of spring steel sheet material generally U-shape providing an elongated generally rectangular attaching portion adapted to be fastened to the under side of the table top and downwardly bent side portions of hook form defining the prongs both facing one end portion of said cross-portion, which is the end portion fastened to the underside of the table top by a fastener having a downwardly projecting rounded head located directly over the outer ends of said prongs, the body portion being flexible downwardly by flexing of the attaching portion relative to the fastener, whereby the rounded head of said fastener serves as a detent for detachably securing the cross-portion of the second leg in the hook when the said cross-portion is snapped into place therein past said head, said rod being flexible and resilient and engaging the prongs of the hook intermediate the ends of said rod, said prongs having cam surfaces defined on their outer ends on their under sides for deflection of said rod preparatory to its snapping onto the hook.

6. A foldable table as set forth in claim 2 wherein the hook is of a double pronged type, the same comprising a generally U-shaped body of spring steel sheet material bent to generally U-shape providing an elongated generally rectangular attaching portion a-dapted to be fastened to the under side of the table top and downwardly bent side portions of hook form defining the prongs both facing one end portion of said cross-portion, which is the end portion fastened to the under side of the table top by a fastener, the body portion being flexible downwardly by flexing of the attaching portion relative to the fastener, whereby to enable easy disconnection of said rod from said hook in unfolding the legs, said rod being flexible and resilient and engaging the prongs of the hook intermediate the ends of said rod, said prongs having cam surfaces defined on their outer ends on their under sides for deflection of said rod preparatory to its snapping onto the hook.

References Cited UNITED STATES PATENTS 415,841 11/1889 Lee 108-121 X 1,412,314- 4/1922 Pandolfo 108-119 2,514,735 7/1950 Wilson et a1 108-119 2,957,736 10/1960 Olander et al 108-119 X 3,083,006 3/1963 Bedol 108-50 3,103,900 9/1963 Lippmann 108-119 3,139,845 7/1964 Kolinski 108-119 3,191,554 6/1965 Zierhut 108-118 DAVID J. WILLIAMOWSKY, Primary Examiner.

G. O. FINCH, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US415841 *May 4, 1889Nov 26, 1889 Folding table
US1412314 *May 20, 1920Apr 11, 1922Samuel C PandolfoTable
US2514735 *Mar 31, 1948Jul 11, 1950William H AlexanderFoldable tray-table unit
US2957736 *Oct 15, 1958Oct 25, 1960Clark J R CoStop for folding support frame
US3083006 *Aug 23, 1957Mar 26, 1963American Mach & FoundryWorkholding device having means for angular cutoff
US3103900 *Jun 11, 1962Sep 17, 1963Harwood Electronics Co IncCollapsible table and slide sorter
US3139845 *Sep 26, 1962Jul 7, 1964John Kolinski JosephCollapsible stool
US3191554 *Apr 8, 1964Jun 29, 1965Cal Dak CompanyTable
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4354436 *Jun 16, 1980Oct 19, 1982Anritsu Electric Company LimitedStand for supporting items of electronic equipment
US7934494 *Oct 10, 2003May 3, 2011Donna Gail SchneiderCollapsible heating apparatus
Classifications
U.S. Classification108/119
International ClassificationA47B3/02
Cooperative ClassificationA47B3/02, A47B2003/025
European ClassificationA47B3/02