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Publication numberUS1709928 A
Publication typeGrant
Publication dateApr 23, 1929
Filing dateAug 3, 1926
Priority dateAug 3, 1926
Publication numberUS 1709928 A, US 1709928A, US-A-1709928, US1709928 A, US1709928A
InventorsGeorge E Whitney
Original AssigneeSamuel Zimmer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Service tray
US 1709928 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

April 23, 1929. G. E. wmN-EY SERVICE TRAY Original Filed Aug. 3, 192

Patented Apr.Y '23, 19.29.





Applieationiled August 3, 1926, Serial No. 126,866. I .Renewed February 1, 1929.

This invention relates to service trays, but Amore particularly to devices of this descrip- Ltion which are equipped with two pairs of foldable legs one at each end of the bottom portion of the tray. 1 U

The object of the present inventlon 1s to.

maintain the legs in closed or opened positions without the aid of any special'lixtures. h

In the accompanying vdrawings whlch form a part of this application- Figure 1 is a perspective View of the bottom of a tray equipped with this improvement, the legs being shown in opened position.

Figure 2 is a broken perspective view, on an ,enlarged scale, of 'one end of the bottom portion of the tray with the leg closed.

Figure 3A is a section at theline 3 3 of Figure 1.

Figure 4 is a section at the line 4 4 of Figure 2, and

Figure 5 is a vview similar to Figure 2 but showing a modified form of the inven-z tion.

Similar numerals of reference vdenote likel each leg consisting of a continuous wireformed into a cross rod 4 at the inner porl tion of the leg, which rod is pivotally swung l5 from hangers 5 secured to the strip 2, the wire immediately beyond the hangers being bent at right angles to form the. legs proper and fashioned into feet '6 and then prefer ably welded intermediate the feet at the .0 point 7. f

The cross rods 4 have their central portions deflected so as to form cams 8 which, when the legs are folded, extend outwardly and are in contact with the strip 2, the con- `5 tact surfaces of the cams being flattened as shown at 9, andwhen the legs are opened these cam portions will extend inwardly and will contact the strip 2 at the flattened portions 10. 'p 0 The swinging of the legs from opened to closed position will cause the cams 8 to operate against the strips 2, thereby causing the rods 4 to yield resiliently, so" that when the legs are folded against the bottom of the tray the recovery of the rods and the disposition of the cams will cause the legs to be securely held in folded position, particularly since the cams will contact the strips 2 along the flattened portion'9. When' the legs are opened the -cams will also con-u tact .the strips 2 and cause the legs to yield resiliently and to recover when the legs are, fully opened with the cams extending inwardly, and contacting the strips 2 at the attened portions 10. i

In order to prevent the overthrow of the legs when they are opened the rods near one end have a bight 11 formed therewith which operates as a shoulder to strike against the strips 2 when the le s are fully opened.

But instead of thls bight the legs may be ,formed with the free ends 12 of the wire bent as shown at Figure 5, in which instance an extra hanger 13 secured to the strip 2 is provided through' which one end of the wire pivotally extends. f

The strip 2 greatly reenforces the tray and offers such resistance to the action of the cams, thatconsiderable force is necessary both in opening and closing the legs, thus greatly contributing toward their security in both folded and opened positions.

1. A service tray comprising a tray pro er having at each end of its bottom `portion an elongated metal strip, hangers secured to said strip, cross rods pivotally swung in said hangers and having formed at their central portions cams, said rods immediately beyond the hangers being bent at' right angles to constitute the legs proper and then fashioned into feet,'the rods being provided with shouldered portions to limit the outward throw of -the legs.

2. A construction as in claim 1 in which thc surfaces of the cams that Contact the strips are flattened.A

In testimony whereof I aiix my signature hereto. y


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2490318 *Apr 18, 1947Dec 6, 1949Padon Preston MFolding table legs with actuator gravity lock
US2501580 *Mar 5, 1947Mar 21, 1950Nellie ReidChair arm table
US2514735 *Mar 31, 1948Jul 11, 1950William H AlexanderFoldable tray-table unit
US2556261 *Dec 22, 1947Jun 12, 1951Emma Dubach LenaCombined serving tray and reading rack
US2626845 *Dec 24, 1949Jan 27, 1953Emma Dubach LenaFolding tray
US2669495 *Feb 18, 1952Feb 16, 1954Foote Wilma LClamp-on table for the arms of chairs or the like
US2690942 *Apr 9, 1952Oct 5, 1954Benjamin MarcusFolding tray leg structure with spring lock
US2886186 *Aug 24, 1953May 12, 1959Hamilton Mfg CorpServing tray and cart
US3086767 *Sep 4, 1959Apr 23, 1963Boser Herman GeorgePlumber's helper
US3094080 *Mar 13, 1961Jun 18, 1963Shannon William RCollapsible desk for beds
US3734595 *Aug 6, 1971May 22, 1973Cities Service CoFolding highway emergency device
US4128912 *Jun 2, 1976Dec 12, 1978Conklin Harold EGarden tray with pivoted handle
US4557200 *Aug 15, 1983Dec 10, 1985New Products I, Ltd.Tray with folding legs
US4953473 *Jan 18, 1990Sep 4, 1990Tomaka Leonard PCombination serving tray, bed tray and bathtub tray
US5284100 *Jan 31, 1992Feb 8, 1994Hunt Holdings, Inc.Folding table system and apparatus
US5368537 *Apr 25, 1991Nov 29, 1994Coin Acceptors, Inc.Exercise apparatus
US6561107 *May 18, 2001May 13, 2003Lockermate CorporationFoldable shelf assembly
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US7461602Dec 4, 2006Dec 9, 2008Lifetime Products, Inc.Table with foldable legs
US7461603Aug 27, 2007Dec 9, 2008Lifetime Products, Inc.Table including a plastic table top and an attached frame
US7464654Oct 30, 2006Dec 16, 2008Lifetime Products, Inc.ITable with integral receiving members
US7533619Oct 31, 2007May 19, 2009Lifetime Products, Inc.Table with spaced depressions
US7536961Oct 31, 2007May 26, 2009Lifetime Products, Inc.Table including a plastic table top and attached frame
US7571686Oct 31, 2007Aug 11, 2009Lifetime Products, Inc.Table with molded plastic table top
US7806060Oct 31, 2007Oct 5, 2010Lifetime Products, Inc.Table top with a plurality of closely spaced depressions
US8042476May 25, 2009Oct 25, 2011Lifetime Products, Inc.Table with molded plastic table top
US8069796Aug 10, 2009Dec 6, 2011Lifetime Products, Inc.Table with molded plastic table top
US8074582May 18, 2009Dec 13, 2011Lifetime Products, Inc.Table with a table top including a plurality of integrally formed depressions
US8176855Aug 20, 2009May 15, 20121 Mustard Seed, LLCFood and beverage tray
US8375871Oct 4, 2010Feb 19, 2013Lifetime Products, Inc.Table top with a plurality of closely spaced depressions
US8381665Oct 24, 2011Feb 26, 2013Lifetime Products, Inc.Table top constructed from molded plastic
US8381666Dec 5, 2011Feb 26, 2013Lifetime Products, Inc.Table top constructed from molded plastic
US8438982Dec 12, 2011May 14, 2013Lifetime Products, Inc.Table with a table top constructed from molded plastic
US8739707Feb 26, 2013Jun 3, 2014Lifetime Products, Inc.Table top
US8904623Feb 26, 2013Dec 9, 2014Lifetime Products, Inc.Table
US20060000394 *Jul 11, 2005Jan 5, 2006Stanford Carl RTable with foldable legs
U.S. Classification108/18, 108/129, 294/144, 108/132
International ClassificationA47B23/00
Cooperative ClassificationA47B23/001, A47B2200/0033, A47B3/0815
European ClassificationA47B3/08D4, A47B23/00B