US1771123A - Insulated container - Google Patents

Description

July 22, 1930. E. s. JOHNSON INSULATED CONTAINER um uw. 1s. 192e vPatented `luly 22, 1.930

UNITED STATES PATENT OFFICE ERNEST S. JOHNSON, OF WEBSTER CITY, IOWA, ASSIGNOR T KNAPP-MONABCH COMPANY, 0F ST. LOUIS, MISSOURI, A .CORPORATION 0F MISSOURI INSULATED CONTAINER Application led November 13, 1926. Serial No. 148,136.

This invention relates to containers which Referring now in greater detail to the are adapted to maintain their contents at an drawing, a shell generally indicated as l surunchanging temperature for a considerable rounding a receptacle 2 is provided with inperiod of time after the container is sealed. sulating material 3 to prevent the transmis- 5 One of the objects of this invention is to sion of heat from the receptacle outwardly produce a container having a construction or from the outside atmosphere inwardly to which is new in the art and which is by the receptacle. reason of that construction better adapted There are two manners illustrated for the than its predecessors to maintain the temattachment of the top of the shell to the io perature of its contents in an unchanged lleCk 4: 0f the I`Cp3C1e- In Fig- 3 it Will 00 condition :for a long period of time. be observed that a circumferential bead or Another object of this invention is to proprojection 5 is provided on the receptacle. duce an insulated container having sealing This projection may be designed in a continmeans which will not readily conduct heat u0 l1s circle. The top portion of the conand which will effectively seal the container tainer may then be crimped about the bead 65 with unimpairedeiiiciency regardless of pro- 1n the manner illustrated. In Fig. 2 a relonged u se of the device. silient material 6, such as rubber or other Another object of'this invention is to prosuitable material is illustrated as being induce an insulated container having the above 'rpOSed between the crimped edge, or spun 2o advantages and so constructed as to lend itedge, of the shell in order to effectively seal 70 self to e lower cost of production, the ]o1nt against the entrance of air or wa.-

Further objects, advantages and capabiliter. This material 6 may be used or not as ties will later appear and are inherently posdeSlledsessed by this invention, In Figs. 4 and 5 another manner of attache5 My invention further resides in the combiing the shell to. the receptacle is illustrated. 75 nation, construction and arrangement of Instead O the pIOJection 5 on the receptacle parts illustrated in the accompanying drewa depresslon 7 1s provlded and a collar, such ing, and while I have shown therein e, pre as a metal collar, 1s spun into rigid and sealed fer-red embodiment of my invention, I Wish connection wlth the depression 7. This colit understood that the same is susceptible of la? then .may be attached t0 the top of the ao modification without departing from the shell or 1t may be, if desirable, continuous spirit of my invention, and integral with the shell.

Referring now to the drawings, Fig 1 is A cap enerally indicated as 8 is provided e, vertical sectional view through the, center and 1s suited to be attached to the container of the container, whether the construction shown in Fig. 3 or S5 Fig. 2 is a fragmentary view in section F 4 iS used- The Cap 8 may be provided showing the manner of attaching the shell Wlth threads 9 Whch Win engage the COOP' to the receptac1e erating threads l0 on the receptacle as shown Fig 3 is a fragmentary view in Section in Flg. 3, or 1f the construction of Fig. 4 is 4o illustrating the manner of applying the sealused, instead of the cooperating threads 1() 00 ing means and securing the cap to the reon the receptacle, a cooperating thread 11 ce tec1e will be provided on the shell which surig. 4 is another detail in section showing rOllIlClS the IleCk 4 Of the receptacle. In another manner of attaching the shell to the either manner, it iS plain that the cap may receptacle and providing threads for the be firmly Secured to the container. This 95 calg on the exterior of the shell. cap provides an eiicient drinking cup.

ig. 5 is similar to Fig. 4 except that the In order to provide an eiiicient means for uppermost portion of the shell has not yet sealing the open end of the container, I have been spun into engagement with a corredesigned a stopper or heat insulating elespending groove in the receptacle. ment generally indicated as l2. This stopper may be of cellular construction having a single cell or a'plurality of cells and may or may not contain heat insulating material. It will be observed that the bottom surface 13 of this stopper is substantially spaced apart from the top surface 14 of the stopper in order to provide suflicient room for an adequate heat insulating means. This stopper is provided with a reduced portion 15 which may be constructed in the manner illustrated or in any other suitable manner. In order to effect the sealing of the open end of the receptacle, this reduced portion 15 is interposed between a shoulder 16 on the cap and the open end of the receptacle. W'hen the cap is screwed down this portion will be forced against the top of the receptacle and will effectively seal it. If desired, a resilient material 17, such as rubber, cork or other Suitable material, may be interposed adjacent to the reduced portion 15 in order to aid in sealing the opening of the receptacle.

The cap and the stopper are so designed as to contact with each other only near the periphery of the stopper as is illustrated in Figs. 1 and 3. A considerable space is left between the top surface 14 of the stopper and the top 18 of the cap 8. This space will prevent conduction of heat from the stopper to the cap. In prior constructions which have employed stoppers and caps the central portion of the stopper and the central portion of the cap are ordinarily in contact, the cap thus operating to force the stopper into sealing engagement with the receptacle.

The manner in which I attach my shell to the receptacle very effectively retains the receptacle in its proper position within the shell and at the same time seals the joint effectively. l

The manner in which the cap and the stopper cooperate results in the cap exerting its pressure only on the reduced and solid portion of the stopper at the point where both the stopper and the cap are most strong. It can he seen that this combination of cap and stopper is erfectly adapted to long life, whereas if t e cap pressed upon the stopper at or near the center of both, one of them or ,both of them would in time become distorted and the sealing apparatus would then be rendered less eflicient and perhaps entirely ineffective.

Having thus described my invention, I claim:

V1. An insulated container comprising an inner receptacle having a neck, an outer shell generally spaced apart from the receptacle, heat insulating material disposed between the receptacle and shell, a circumferential projection on the neck of the receptacle, an extension on said shell cooperating with said projection to rigidly connect the shell and receptacle and a cap adapted to t over said extension.

2. An insulated container comprising an inner receptacle having a reduced neck portion, an outer shell disposed about the receptacle and having an extension engaged with said neck, means connected with said receptacle for rigidly connecting said shell and receptacle and a cap adapted to lit over said connecting means. l

3. An insulated container comprising an inner receptacle and having a reduced neck portion, an outer shell disposed about the receptacle and having a reduced portion, means connected with said receptacle for rigidly connecting said shell and receptacle and a cap adapted to fit over said connecting means.

4. An insulated container comprising an inner receptacle having a neck, an outer shell disposed about the receptacle and having a reduced portion, a circumferential projection on said neck engaged with said portion for effecting a sealed and rigid connection between said receptacle and shell and a cap adapted to lit over said connection.

5. An insulated' container comprising an inner receptacle having a reduced neck portion,'an outer shell disposed about said receptacle and having a reduced portion, correspondingly curved means on said neck and the reduced portion of said receptacle for effecting a sealed and rigid connection between said shell and receptacle and a cap fitting over said connection.

6. In an insulated container, a receptacle having a port, a stopper having flanged portions engaging with the margin of said port to seal the receptacle, and a cap provided with a shoulder portion, said shoulder portion being adapted to press downwardly on the flanged portions of the stopper for retaining the stopper in said engagement.

7 A container comprising an inner receptacle having a reduced neck portion, an outer receptacle generally spaced apart from the inner receptacle excepting at a point of attachment, and an annular projection on said reduced neck portion snugly engaged with an annular recess on the outer're'ceptacle for securing the two receptacles together.

8. In an insulated container, a receptacle having an open end, a cap provided with a peripheral shoulder portion, and a heat insulating element relatively thick at its central portion to provide substantial heat insulating means in said open end and having' peripheral flanges adapted to abut said open end, the shoulder of said cap engaging said flanges for sealing said receptacle.

In witness whereof, I hereunto subscribe my name to this specification.

ERNEST S. JOHNSON.

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