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Numéro de publicationUS1709928 A
Type de publicationOctroi
Date de publication23 avr. 1929
Date de dépôt3 août 1926
Date de priorité3 août 1926
Numéro de publicationUS 1709928 A, US 1709928A, US-A-1709928, US1709928 A, US1709928A
InventeursGeorge E Whitney
Cessionnaire d'origineSamuel Zimmer
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Service tray
US 1709928 A
Résumé  disponible en
Images(1)
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Revendications  disponible en
Description  (Le texte OCR peut contenir des erreurs.)

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

Patented Apr.Y '23, 19.29.

UNITED STATES PATENT 1 OFFICE."

GEORGE E. WHITNEY, F BRIDGEPORT, CONNEGTIC'UT, ASSIGNOB T0 SAMUEL ZIMMER,

' 0F BRIDGEPORT, CONNECTICUT.

SERVICE TRAY.

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

` GEORGE E. WHITNEY.

Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US2490318 *18 avr. 19476 déc. 1949Padon Preston MFolding table legs with actuator gravity lock
US2501580 *5 mars 194721 mars 1950Nellie ReidChair arm table
US2514735 *31 mars 194811 juil. 1950William H AlexanderFoldable tray-table unit
US2556261 *22 déc. 194712 juin 1951Emma Dubach LenaCombined serving tray and reading rack
US2626845 *24 déc. 194927 janv. 1953Emma Dubach LenaFolding tray
US2669495 *18 févr. 195216 févr. 1954Foote Wilma LClamp-on table for the arms of chairs or the like
US2690942 *9 avr. 19525 oct. 1954Benjamin MarcusFolding tray leg structure with spring lock
US2886186 *24 août 195312 mai 1959Hamilton Mfg CorpServing tray and cart
US3086767 *4 sept. 195923 avr. 1963Boser Herman GeorgePlumber's helper
US3094080 *13 mars 196118 juin 1963Shannon William RCollapsible desk for beds
US3734595 *6 août 197122 mai 1973Cities Service CoFolding highway emergency device
US4128912 *2 juin 197612 déc. 1978Conklin Harold EGarden tray with pivoted handle
US4557200 *15 août 198310 déc. 1985New Products I, Ltd.Tray with folding legs
US4953473 *18 janv. 19904 sept. 1990Tomaka Leonard PCombination serving tray, bed tray and bathtub tray
US5284100 *31 janv. 19928 févr. 1994Hunt Holdings, Inc.Folding table system and apparatus
US5368537 *25 avr. 199129 nov. 1994Coin Acceptors, Inc.Exercise apparatus
US6561107 *18 mai 200113 mai 2003Lockermate CorporationFoldable shelf assembly
US7143702 *11 juil. 20055 déc. 2006Lifetime Products, Inc.Table with foldable legs
US72072906 déc. 200424 avr. 2007Jim Quentin NicholsAdjustable elevated serving tray for pets
US74345222 oct. 200614 oct. 2008Lifetime Products, Inc.Table top with a plurality of closely spaced depressions
US74616024 déc. 20069 déc. 2008Lifetime Products, Inc.Table with foldable legs
US746160327 août 20079 déc. 2008Lifetime Products, Inc.Table including a plastic table top and an attached frame
US746465430 oct. 200616 déc. 2008Lifetime Products, Inc.ITable with integral receiving members
US753361931 oct. 200719 mai 2009Lifetime Products, Inc.Table with spaced depressions
US753696131 oct. 200726 mai 2009Lifetime Products, Inc.Table including a plastic table top and attached frame
US757168631 oct. 200711 août 2009Lifetime Products, Inc.Table with molded plastic table top
US780606031 oct. 20075 oct. 2010Lifetime Products, Inc.Table top with a plurality of closely spaced depressions
US804247625 mai 200925 oct. 2011Lifetime Products, Inc.Table with molded plastic table top
US806979610 août 20096 déc. 2011Lifetime Products, Inc.Table with molded plastic table top
US807458218 mai 200913 déc. 2011Lifetime Products, Inc.Table with a table top including a plurality of integrally formed depressions
US817685520 août 200915 mai 20121 Mustard Seed, LLCFood and beverage tray
US83758714 oct. 201019 févr. 2013Lifetime Products, Inc.Table top with a plurality of closely spaced depressions
US838166524 oct. 201126 févr. 2013Lifetime Products, Inc.Table top constructed from molded plastic
US83816665 déc. 201126 févr. 2013Lifetime Products, Inc.Table top constructed from molded plastic
US843898212 déc. 201114 mai 2013Lifetime Products, Inc.Table with a table top constructed from molded plastic
US873970726 févr. 20133 juin 2014Lifetime Products, Inc.Table top
US890462326 févr. 20139 déc. 2014Lifetime Products, Inc.Table
US92378019 déc. 201419 janv. 2016Lifetime Products, Inc.Table top with a plurality of closely spaced depressions
US20060000394 *11 juil. 20055 janv. 2006Stanford Carl RTable with foldable legs
US20060130769 *6 déc. 200422 juin 2006Nichols Jim QAdjustable elevated serving tray for pets
US20070034123 *2 oct. 200615 févr. 2007Stanford Carl RTable top with a plurality of closely spaced depressions
US20070051287 *30 oct. 20068 mars 2007Stanford Carl RTable with integral receiving members
US20070089650 *4 déc. 200626 avr. 2007Stanford Carl RTable with foldable legs
US20080022906 *27 août 200731 janv. 2008Stanford Carl RTable including a plastic table top and an attached frame
US20080105170 *31 oct. 20078 mai 2008Stanford Carl RTable
US20080105171 *31 oct. 20078 mai 2008Stanford Carl RTable
US20080110378 *31 oct. 200715 mai 2008Stanford Carl RTable top with a plurality of closely spaced depressions
US20080110379 *31 oct. 200715 mai 2008Stanford Carl RTable
US20090223424 *18 mai 200910 sept. 2009Stanford Carl RTable
US20090229499 *25 mai 200917 sept. 2009Stanford Carl RTable
US20110017109 *4 oct. 201027 janv. 2011Stanford Carl RTable top with a plurality of closely spaced depressions
Classifications
Classification aux États-Unis108/18, 108/129, 294/144, 108/132
Classification internationaleA47B23/00
Classification coopérativeA47B23/001, A47B2200/0033, A47B3/0815
Classification européenneA47B3/08D4, A47B23/00B