Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2296848 A
Publication typeGrant
Publication dateSep 29, 1942
Filing dateDec 16, 1939
Priority dateDec 16, 1939
Publication numberUS 2296848 A, US 2296848A, US-A-2296848, US2296848 A, US2296848A
InventorsWalter A Gueffroy
Original AssigneeAmerican Can Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Container
US 2296848 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

Sept. 29, 1942. I w. A. GUEFFRIOY' 2,295,848

l CONTAINER Filed Dec. 16, 1939 INVENTOR Patented Sept. 29, 1942 comme Walter A.' Gueffroy, San Francisco, Calif., assignor to American Can Company, New a corporation ofNew Jersey York, N. Y.,

Application December 16,1939, serial No. 869,668

' 1 claim. (ci. 2426-1) 'I'he present invention relates to containers or cans and has particular reference to a permanently deformable section f-or indicating spoilage of the contents in the can.

perishable products such as, for example, frozen foods when packed in cans are subject to spoilage and fermentation when not constantly maintained under proper refrigeration. Ferpressure in the can and may sometimes burst the can if not detected soon enough.

The present invention-contemplates providing a permanently deformable section in the can which may be inflated by the internal gases of fermentation to visibly indicate the condition of the product and which will readily show that of the can in Fig. 1, the View showing the deformable section in an inflated condition; and

mentation of the product creates considerable such inflation has taken place even though the section has been punctured and the gases 'have escaped. p A

An object, therefore, of the invention is the provision of a sheet metal can having a deformable section wherein excessive vpressure created within the can will permanently expand the deformable section beyond repair and thereby visibly indicate the condition of the contents of the can even though the expanded section has been punctured with the consequent escape' of the pressure.

Another object is the provision in such a can of a deformable section wherein a thin v panel side Wall section permanently deformable metallic disc is secured over avent hole in a wall of the can so that internal pressures will expand and permanently f stretch the disc out `of shape so that it will visibly-indicate the pressure condition in the can and so that it cannot be pressed down again even if it'has been purposelypunctured to relieve the pressure, without visibly showing vthat such afraudulent act has been practiced.

' Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accompanying drawing, discloses a preferred embodiment thereof. Referring to the drawing: Figure 1 is a side elevation of a filled can embodying the instant invention, the upper portion vof the can being broken away land shown in` section;

Fig. 2 is an enlarged fragmentary sectional view of the upper end of the can shown in Fig. 1, the view'showing in detail the construction of the deformable section of the can;

Fig. 3 is a sectional view'of the upper portion fOOdS.

vention the drawing illustrates a sheet metall container which is adapted to contain perishable drical body II having top and bottom closure members I2, I3 respectively secured thereto in suitable seams I4 suchas the conventional double 'seam shown in the drawing.

The top closure member I2 is formed with -a preferably circular shaped sunken panel I6. (Fig. 2) having a iiatbottom wall section I1 which is pierced with asingle vent hole I8. The bottom wall section I1 merges into a' surrounding I9 which extends up into These panel side walls IB are slightly curved to form an annular recess 2|. The panel I6 contains a thin circular metallic disc 22 which constitutes the deformable section of the can. This disc is preferably made of aluminum or may be made of any other metal which readily bends or stretches. The disc lies flat against the panel bottom wall section I1 on the the top closure wall.

outside of the can and. over the vent. hole I8.

preferably The outer edges of the disc are T 23. These hemmed as indicated by the numeral hemmed edges fit tightly within the annular recess 2I in the panel side walls I9 and are secured in place with solder 24 or other suitable cementing material. This disc thus hermetically seals permit this inflation and is thereby permanently deformed beyond repair. In this inated condition the disc visibly indicates the pressure condition within the can and the can thereupon should be rejected.

If the inflated disc is fradulently punctured to permit escape of the gases therefrom, the disc will l nevertheless remain iny its distorted condition. Even when pressed down flat against the can top, the once ydistorted disc will unduly wrinkle and clearly show .that such fraudulent action has been lview similar to Fig. 3 and showing I Such al can preferably includes a cylinsubjected to an internal pressure condition.-

If sufficient pressure is created within the can before being noticed the deformable disc 22 may rupture or blow out as shown in Fig. 4. Such excessive pressure may even break the solder hold on the hemmed edgelof the discand cause a rupture along this edge. In any case the excess pressure will break through the metallic d isc and thereby permanently destroy it as well 'as visibly indicate that such a pressure condition once existed in the can.

It is thought that thevinvention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement o the parte withl out departing from the spirit and scope oi' .the invention or sacriiicing all oiits material arivantages, the form hereinbeore described seing merely a preferred embodiment thereof.

A container having a deformable section for indicating spoilage oi the contents, Winch com practiced and that the can at one time had been prises a body member, a closure member secured to an end of said body member, said closure member having a substantially central sunken panel section dened by a peripheral side wall terminating at its lower portion in an annular recess, the bottom dened by said wall being substantially flat, said panel section also having a centrally disposed vent hole therein, and a normally flat thin sheet metal deformable element disposed over said vent hole on the outside of said container in close engagement with said sunken panel section, the outer periphery of said deformable element having a hemmed portion of double thickness engaging said annular recess and tightly soldered to the peripheral wall of said sunken panel section, the central portion of said deformable element being adapted to be pressed outwardly by pressure vapors emitted from the container contents through said vent hole as a resuit of spoilage and permanently deformed from its normal iiat state to visibly indicate such spoilage condition.

WALTER, A. GUEFFROY.,

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2449186 *Feb 17, 1945Sep 14, 1948Ind Patent CorpSelf-opening container
US2461557 *Apr 17, 1944Feb 15, 1949Lo Vico RosarioPreset pressure can for frozen foods or the like
US2732873 *Nov 1, 1948Jan 31, 1956 treiber
US3094239 *Nov 18, 1960Jun 18, 1963Standard Thomson CorpPressure device
US3193130 *Apr 10, 1961Jul 6, 1965Continental Can CoNon-spill vented closure for hot cups
US3736899 *Oct 28, 1971Jun 5, 1973Minnesota Mining & MfgPressure change indicator
US3938519 *Feb 26, 1974Feb 17, 1976American Hospital Supply CorporationMedical liquid container with a toggle film leak tester and method of leak testing with same
US4952498 *May 6, 1988Aug 28, 1990Waters John RMethod and apparatus for detecting microorganism activity
US5051360 *Apr 24, 1990Sep 24, 1991Abo, Inc.Sampling, incubation and detection of the pressure change
US5337910 *Dec 1, 1992Aug 16, 1994Dart Industries Inc.Food processing container
US7107928May 12, 2004Sep 19, 2006Ball CorporationSelectively deformable container end closure
EP0368456A1 *Sep 19, 1989May 16, 1990RICHARDSON, Margaret PamelaTamper or damage-indicating members
WO1990003632A1 *Sep 19, 1989Apr 5, 1990Margaret Pamela RichardsonTamper- or damage-indicating members
WO2004101369A2 *May 12, 2004Nov 25, 2004Ball CorpSelectively deformable container end closure
Classifications
U.S. Classification220/600, 220/624, 426/131, 426/118, 220/530, 116/270, 206/459.1, 220/DIG.160, 426/87, 220/89.2
International ClassificationB65D79/00
Cooperative ClassificationY10S220/16, B65D79/005
European ClassificationB65D79/00B