US3232468A

US3232468A - Vacuum bottles having plastic liner

Info

Publication number: US3232468A
Application number: US299892A
Authority: US
Inventors: Robert M Rownd
Original assignee: Aladdin Industries LLC
Current assignee: Aladdin Industries LLC
Priority date: 1963-08-05
Filing date: 1963-08-05
Publication date: 1966-02-01
Anticipated expiration: 1983-02-01
Also published as: LU46661A1; CH420535A; AT266380B; NL6408909A; BE651377A; GB1016815A; ES302795A1

Description

Feb. l, 1966 R. M. RowND VACUUM BOTTLES HAVING PLASTIC LINER 2 Sheens-Sheeil 1 Filed Aug. 5, 1963 rrys.

Feb. 1, 1966 R. M. ROWND VACUUM BOTTLES HAVING PLASTIC LINER 2 Sheets-Sheet 2 Filed Aug. 5, 1963 (0% 5 so 2s 9| JV 3 United States Patent O 3,232,468 VACUUM BOTTLES HAVNG PLASTIC LNER Robert M. Rownd, Nashville, Tenn., assigner to Aladdin industries, Incorporated, Chicago, Ill., a corporation of Illinois Filed Aug. 5, 1963, Ser. No. 299,892 14 Ciaims. (Si. 21S- 13) This invention relates to vacuum bottles of the general 'type having a double walled vacuum insulated receptacle which is received within a protective jacket made of plastic, metal or the like.

One object of the present invention is to provide a new and improved vacuum bottle having a plastic liner which is formed integrally with an annular upper portion having a pouring lip thereon.

A further object is to provide such a new and improved vacuum bottle in which the plastic liner covers the entire inside of the vacuum insulated receptacle or filler so as to prevent the filler from being scratched, broken or otherwise damaged.

Another object is to provide such a new and improved vacuum bottle in which the liner, with its pouring lip portion, is entirely impervious to uids, so that the liner contains the uids which are placed in the vacuum bottle, the liner being effective to prevent any iluids from coming into direct contact with the vacuum insulated ller. In this way, the liner protects the ller from any possible breakage due to heat shock. Moreover, the liner obviates any possibility that uids will leak between the vacuum insulated filler and the protective outer jacket.

A further object is to provide a new and improved vacuum bottle in which means are provided to form a fluid-tight seal between the upper annular portion of the liner and the upper portion of the protective jacket, so as to prevent any leakage of tluids between the liner and the jacket.

Another object is to provide such a new and improved vacuum bottle in which the seal between the liner and the jacket is formed on the outside of `the upper annular portion of the liner, well below the pouring lip, so that the iluids poured into or out of the vacuum bottle do not come in contact with the seal.

A further object is to provide a new and improved vacuum bottle which is fully submersible in water for cleaning purposes, without any danger that water will leak Vinto the space within the protective jacket.

Another object is to provide a new and improved vacuum bottle of the foregoing character in which the upper annular portion of the liner is provided with screw threads or other means for securing a closure to the liner, and an annular seat portion adapted to be engaged by the closure for retaining fluids which may be placed in the vacuum bottle.

Another object is -to provide such a new and improved vacuum bottle in which screw threads or other means are provided for securing the upper annular portion of the liner to the upper portion of the protective jacket, the liner being adapted to be inserted into the vacuum insulated filler and screwed onto the jacket in the initial assembly of the vacuum bottle.

lt is a further object to provide such a new and improved vacuum bottle having means for preventing the liner from being unscrewed accidentally from the protective outer jacket so that the closure may be unscrewed from the liner without causing the liner to be unscrewed from the protective outer jacket.

A further object is to provide such a new and improved vacuum bottle in which an G-ring seal is provided between the upper portion of the liner and the protective outer jacket.

3,232,458 Patented Feb. 1, 1966 ice Another object is to provide a new and improved vacuum bottle in which locking, nonretrograde screw threads are provided between the liner and the protective outer jacket.

A further object is to provide a new and improved vacuum bottle in which the bottom of the jacket is removable so that the vacuum insulated filler may be replaced through the bottom of Ithe jacket without disturbing the seal between the liner and the jacket.

Another object is to provide a new and improved vacuum bottle in which the Jdller may alternatively be replaced by removing the O-ring from the joint between the liner and the jacket, whereupon the liner can be unscrewed from the jacket.

In some aspects, the present invention is an improvement upon the invention disclosed and claimed in the 'Bramming Patent No. 3,016,159, patented January 9', 1962, and assigned to the same assignee as the present application.

Further objects and advantages ofthe present invention will `appear from the following description, taken with the `accompanying drawings, in which:

FIG. 1 is a general elevational view of a vacuum bottle to be described as an illustrative embodiment of lthe present invention.

FIG. 2 is a fragmentary elevational section taken centrally through the vacuum bottle of FIG. 1.

FIG. 3 is a bottom view of an insert mounted in the 'bottom of the protective jacket.

FIG. 4 is a top view of the bottom member of the protective jacket.

FIG. 5 is a greatly enlarged fragmentary section showing the locking means for the screw threads between the liner and the protective outer jacket, the view being taken generally along a line 5 5 4in FIG. l.

-FlG. 6 is a general elevational view -of a modied vacuum bottle embodying the present invention.

FlG. 7 is an elevational section taken centrally through the vacuum bottle of FIG. 6.

FlG. 8 is a fragmentary enlarged view corresponding to the upper left-hand portion of FIG. 2.

As already indicated, FIG. 1 illustrates a vacuum bottle 1 of the general type comprising a vacuum insulated ller Z which is received within a protective outer jacket 3. As shown, the jacket is made `of plastic, but it may be made of metal or any other suitable material which is suiiiciently strong to protect the ller 2. Normally, the filler 2 is made of glass. The illustrated filler 2 is of the usual type having inner and outer walls d and 5 with an evacuated space 6 therebetween. The upper ends of the inner and outer walls 4 and 5 are joined together by a rounded upper rim 7.

The walls 4 and S have generally cylindrical

side wall portions

8 and 9 which ar-e closed at their lower ends by generally cup-shaped lower wall portions 10 and 11. The upper end of the inner wall 8 is formed with an open mouth 12. As illustrated, the filler 2 is of the widemouthed type, in that the diameter of the mouth 12. is approximately the same as the diameter of the side wall portion 8. Thus, the vacuum bottle 1 is particularly well adapted for holding food materials such as soups, stews and the like, having a solid content, as well as a liquid or uid content. When such food materials are to be consumed, a spoon or other utensil may readily be inserted into the vacuum bottle through the wide mouth 12. Of course, the vacuum bottle may also be employed to hold hot or cold liquids, such as coffee, milk, or the like.

The bottom portion 11 of the outer wall 5 is formed with a centrally disposed, downwardly projecting tubulation or tip 13 which is generally nipple-shaped. The

tubulation 1-3Yconstitutes the sealed off vestige of the tube through which the sp-ace 6 between the walls 4 and 5 was evacuated during the manufacture of thefiller 2. In this case, the' fragile tubulation or tip 13v is protected by a generally cup-shaped tip protector 14 which may be made of metal, plastic, or other suitable materials. The tip protector 14 is normally secured to the botom wall 11, around the tubulation 13, byv a layer of cement 1S.

As illustrated, the-protective outer jacket 3 has a generally cylindrical side wall portion 16 which, however, tapers upwardly to a slight extent in the illustrated construction. A series of annular grooves 17 are formed in the sidewall 16 so that the user of the vacuum bottle may have a more secure grip upon the jacket 3'. The grooves 17 also have a decorative effect. In this case, a handle 18 is mounted on the side' wall 16 of the jacket 3. The illustrated handle 18 is formed integrally with the side wall-16. As shown, the handle 18 comprises two vertically spaced

horizontal posts

19 and 20 which project outwardly from the side wall 16, and a bar portion 21 extending vertically between the

posts

19 and 20. The bar portion 21 also projects above the post 19 and below the post 2d to provide a better grip.

The illustratedA jacket 3 also comprises a reduced upper collar or neck portion 22 which in this case is formed integrally with the side wall portion 16. The collar portion 22 surrounds the upper portion of the ller 1. As shown, the collar portion 22 is generally cylindrical in shape.

A cup 23 is adapted to be removably mounted in an inverted position over and around the collar portion 22, of the jacket 3. The illustrated cup 23 has a generally cylindrical wall portion 24 and a substantially flat generally disk-shaped end wall 25. The cup 23 may be made of plastic, as shown, or any other suitable material.

Screw

threads

26 and 27 or other suitable means are formed on the collar portion 22 and the side wall portion 24 for disengageably securing the cup 23 to the jacket 3. As shown, the screw threads 26 project outwardly from the collar portion 22 while the screw' threads 27 project inwardly from the side wall portion 24 of the cup- 23.

As shown, the outside of the side wall portion 24 of the cup 23 is of substantially the same diameter as the side wall portion 16 of the jacket 3, so that` the outside of the cup 23 is flush with the outside of the side wall 16. As shown, an upwardly facing shoulder 23 is formed on the jacket 3 between the side wall portion 16 and the collar portion 22. The shoulder 28 is engageable by the end surface or rim 29 ofthe side wall portion 24 on the cup 23. The lower end of the collar 22 is formed with an enlarged portion or bead 30, extending upwardly from the shoulder 28. The bead 30 is received within the lower end of the side wall portion 24 of the cup 23 to center the side wall 24 and maintain it in a circular condition, as disclosed and claimed in the Bramming Patent No. 2,989,203, patented June 20,. 1961.

The illustrated jacket 3 has a removable bottom closure member 31 which provides for removal and replacement of the filler 2 through the bottom of the jacket. As shown, the bottom closure member 31 is generally cup-shaped and is formed with a generally cylindrical side wall 32 which projects upwardly from a generally circular flat diskshaped bottom wall 33. A rounded annular bead 34 projects downwardly from the bottom wall 33 around the outer edge thereof for engagement with a table top or other supporting surface.

The side wall portion 32 of the bottom closure member 31 is preferably received around a reduced lower end portion 35 on the side wall 16 of the jacket 3. In this case, the outside diameter of the side wall portion 32 corresponds to the outside diameter of the side wall 16 so that the outside of the side wall portion 32 is substantially ush with the outside of the side wall 16.

Screw threads 36 and 37 or other suitable means are formed on the side wall portion 32 and the reduced portion 35 for disengageably securing the bottom closure member 31 to the side wall 16 of the jacket 3. As shown, the screw threads 36 project inwardly from the side Wall portion 32 while the screw threads 37 project outwardly from the reduced portion 35. As shown, the bottom closure member 31 is made of plastic, but it may be made of metal.

Means are provided to form a fluid-tight seal between the bottom closure member 31 and the side wall 16, so that water and other uids will not be able to leak into the space within the jacket 3. As shown, an O-ring seal 38 is provided between the side wall portion 32 of the closure member 31 and the side wall 16. The O-ring 38 is made of rubber, synthetic rubber, various plastics, or other soft resilient rubberlike materials. The O-ring 33 is received around the reduced portion 35, above the screw threads 36 and 37, and against a downwardly facing shoulder 39 which is formed on the side wall 16 above the reduced portion 35, The upper end of the side wall portion 32 is formed with an annular internal beveled surface 40 for engaging the O-ring 38 so as to compress the O-ring into the corner between the reduced portion 35 and the shoulder 39. When the bottom member 31 is screwed fully onto the side wall 16, the upper end of the side wall portion 32 engages the shoulder 39, and the O-ring 38 is fully concealed between the side wall portion 32 and the side wall 16.

The tip protector 14 at the lower end of the ller 2 is supported in the general manner disclosed and claimed in the Bramming Patent No. 2,963,187, patented December 6, 1960. Thus, the tip protector 14 is formed with a reduced lower end portion 41, around which a soft resilient sleeve or tube 52 is snugly received. The upper end of the sleeve 42 engages a downwardly facing shoulder 43 on the tip protector 14. The sleeve 42 is preferably made of rubber or synthetic rubber, but may be made of various plastics or other soft resilient rubberlike materials. It will be seen that the sleeve 42 is adapted to be compressed endwise, whereupon the sleeve bulges outwardly from its original cylindrical shape into a barrel shape. Thus, the sleeve 42 acts as a resilient support for the tip protector 14.

The lower end of the resilient sleeve 42 is received within a socket or opening 44 formed in an annular seat member 45. The illustrated socket 44 tiares upwardly for easy insertion of the resiiient sleeve 42 into the socket. A generally horizontal ange 46 projects inwardly from the seat member 45 at the lower end of the socket 44.

In the illustrated construction, the seat member 45 is in turn received within a socket or recess 47 formed in a circular disk-like insert 4S which is mounted within the bottoni closure member 31 and is supported by the lower wall 33 thereof. The socket 47 has a at circular bottom wall 49 and a downwardly tapering side wall 5? which facilitates the insertion of the seat member 45 into the socket 47.

As shown, the insert 48 has a sloping frustoconical annular wall 51 which extends from the upper end of the side wall Sil to the circular outer margin of the insert. A plurality of radial reinforcing ribs or ins,32 preferably are provided between the frustoconical wall 51 and the side wall 5t).

The insert 4S is preferably molded in one piece from a suitable plastic material, such as polystyrene, nylon, or the like, but metal or other suitable materials may be employed. The seat member 45 is also preferably molded in one piece from suitable plastic material, such as polystyrene.

In this case, the lower wall 33 of the bottom closure member 31 is formed with a plurality of posts or lugs 53 which project upwardly into the spaces between the ns or ribs 52. Each of the illustrated posts 53 has a sloping upper surface 54 which engages the under side of the sloping wall 51 on the insert 48. The posts 53 engage the ribs 52 and cause the insert 48 to rotate with the bottom `closure member 31 when the closure member is screwed onto or olf the sidewall 16.

In accordance with the present invention, the vacuum bottle 1 is provided with a liner 55 which is received within the filler 2 so as to cover and protect the inner wall 4 thereof. As shown, the liner 55 corresponds rather closely in shape to the inner wall 4. Thus, the liner 55 has a generally cylindrical side wall 56 and a cup-shaped bottom wall 57. As shown, a small clearance space 58 is provided between the liner 55 and the inner wall 4 of the vacuum insulated filler 2. This space 58 makes it easy to slip the filler 2 out of the jacket 3 when the bottom closure member 31 is removed.

The liner 5S is preferably made of plastic, but metal or other suitable materials may be employed. Polyethylene and polypropylene are preferred plastic materials for the liner 55.

The liner 55 is completely impervious to fluids so that it actually contains any uids which are poured into the vacuum bottle. The liner prevents any fluids from coming into direct contact with the vacuum insulated filler 2.

It is preferred to form the liner 55 with an integral annular upper portion 59 which may be arranged to perform a number of important functions. Thus, as shown, the annular upper portion 59 is formed at its upper end with an annular pouring lip 66 over which the uids are caused to flow when such uids are poured from the vacuum bottle. The pouring lip 60 includes a frustoeonical upper surface 61 which flares upwardly and outwardly from the inside surface 62 of the upper portion 59. Such inside surface 62 is generally cylindrical. A cylindrical outer surface 63 is formed on the upper portion 59 just below the pouring lip 6l).

Screw threads

64 and 65 or other means are formed on the annular collar portion 22 of the jacket 3 and the upper portion 59 of the liner 55, for disengageably securing the liner to the jacket. ly from the collar portion 22, while the screw threads 65 project outwardly from the annular portion 59. Means are provided to form a seal between the upper annular portion 59 of the liner 55 and the collar portion 22 of the jacket 3. As shown, an O-ring seal or gasket 66 is positioned between the upper end surface 67 of the collar member 22 and a downwardly facing shoulder 68 on the outside of the annular member 59 below the pouring lip 6l). The upper surface 67 of the collar 22 is inwardly beveled to compress the O-*ing 66 inwardly. The G-ring 66 is received around a cylindrical portion 69 of the annular member 59. The outside diameter of the cylindrical portion 69 corresponds to the inside diameter of the annular collar portion 22 so that the portion 69 is adapted to be slidably received within the collar portion 22. It will be seen that the outside diameter of the cylindrical portion 69 is less than that of the cylindrical surface 63, which corresponds in diameter to the outside diameter of the collar member 22. When the liner 59 is screwed downwardly, the upper end surface 67 of the collar member 22 compresses the O-ring 66 into the corner between the shoulder 68 and the cylindrical surface 69. It will be noted that the sealing ring 66 is below and outside the pouring lip 66 so that iiuids do not pass over the sealing ring when they are poured out of the vacuum bottle.

Means are provided to prevent the liner 55 from .being unscrewed accidentally from the collar member 22. Thus, the illustrated

threads

64 and 65 are provided with locking

elements

76 and 71 which prevent retrograde movement of the threads after they have been tightened. As shown in FIG. 5,

such locking elements

70 and 71 take the form of a plurality of saw-toothed serrations similar to ratchet teeth. Thus, the

teeth

70 and 71 have substantially vertical shoulders 72 and 73 which are adapted to interlock to prevent retrograde movement of the thread 65 relative to the thread 64. The teeth 7@ and 71 have gently sloping

surfaces

74 and 75 extending between the abrupt shoulders 72 and 73.

The upper annular member 59 of the liner 55 also provides means whereby a closure 76 may be mounted The screw threads 64 project inwardon the vacuum bottle so as to retain fluids in the liner 55. The illustrated closure 76 comprises a hollow cup-shaped stopper member 77 having a generally flat disk-like bottom wall 7S. A Haring wall portion 79 extends upwardly and outwardly from the .bottom wall 78. The upper end of the flaring wall portion 79 connects with a cylindrical side wall $6. At its upper end, the side wall Si! is formed with an outwardly projecting horizontal liange 81 which serves as a hand grip. The top of the closure 76 is closed by a circular disk-like member 82 which is received within a cylindrical bore or opening 83 formed within the wall 80. The disk 82 may be cemented, heat sealed or otherwise bonded to the Wall 80. The stopper member 77 and the closure disk 82 are preferably made of plastic, but other suitable materials may be employed. Preferred plastics include polyethylene and polypropylene.

Screw threads S4 and 85 or other means are employed for disengageably securing the closure 76 to the annular member 59 at the upper end of the liner 55. As shown, the screw threads 84 project inwardly from the annular member 59 on the liner 55, while the screw threads 85 project outwardly from the side wall 8) of the stopper member 77.

The Haring wall portion 79 of the stopper member 79 is adapted to seat against an annular shoulder portion 86 which is formed on the liner 55 between the cylindrical side wall 56 and the upper annular portion S9. The engagement between the flaring portion 79 and the shoulder 86 forms a seal which retains liquids in the liner 5S.

In the illustrated vacuu-m bottle 1, a pad S7 is provided between the inside of the side wall 16 on the jacket 3 and the outer wall 5 4of the vacuum insulated filler 2. The pad 87 lmay be ring-shaped and may be made of a Soft material such as foam rubber or the like.

When the vacuum bottle 1 is to be used, the cup 23 and the closure 76 are removed. The cup 23 is unscrewed from the collar member 22, while the closure member 76 is unscrewed from the upper annular member 59 of the liner 55. The

thread locking serrations

70 and 71 prevent the liner 55 from being unscrewed when the closure 76 is unscrewed.

The vacuum bottle may be lled with any desired hot or cold beverage or food. Due to the wideness of the mouth 12, the vacuum bottle is particularly well suited for holding hot foods such as soups, stews or the like.

The liner 55 actually contains the fluids or other material placed in the vacuum bottle and prevents any direct contact between the tiuids and the vacuum insulated filler 2. Thus, the liner 55 protects the iiller 2 from breakage due to heat shock or impact.

When the food or beverage in the vacuum bottle 1 is to be consumed, a spoon or other implement may be inserted into the vacuum bottle. lt is particularly advantageous to use a spoon for removing hot foods such as soups or stews. The liner 55 prevents any direct contact between the spoon or other implement and the inner Wall of the vacuum insulated ller 2, so that the liner prevents the filler from being scatched, broken or otherwise damaged by the spoon or other implement.

If fluids are poured from the vacuum bottle, the fluids pass over the annular upper portion 59 of the liner 55, without contacting the vacuum insulated ller 2 or the sealing ring 66. The pouring lip 66 prevents the uids from running down the outside of the jacket 3. Inasmuch as the l-iner S5 is impervious to fluids, there is no possibility that iiuids will leak between the liner and the vacuum insulated receptacle 2. The O-ring 66 prevents any uids from leaking between the liner 55 and the jacket 3.

The vacuum bottle may be closed by screwing the closure 76 into the upper portion 59 of the liner 55. The tapering lower wall portion 79 of the stopper 77 seats against the tapering shoulder 86 on the liner 55 to prevent any luids from leaking.

When the vacuum bottle 1 is to be cleaned, it may be completely immersed in Water and washed like an ordinary dish in a dishpan. The O-

ring seals

38 and 66 prevent any leakage of water into the space within the jacket 3.

If the filler 2 is broken due to some accident, so that the lfiller needs to be replaced, it may readily be removed lby removing the bottom closure 31 of the jacket 3. The filler may then be slipped out of the jacket without disturbing the position of the liner 55 or the seal between the liner and the jacket 3. A new filler may be inserted and the bottom closure 31 may be replaced.

To remove the liner 5S, it is necessary to extract the O-ring 66 from its position between the end surface 67 and the shoulder `63. This may be done by spearing the O-ring 66 with a sharp-pointed instrument, such as a pin, whereupon the O-ring may be pulled outwardly. When this is done, the O-ring tends to be stretched permanently, so that it may be necessary to provide a new O-ring when the liner 55 is replaced. However, normally, it Should not be necessary to remove the liner from the vacuum bottle 1 of FIGS. 1 and 2, inasmuch as the filler can be removed and replaced through the bottom of the jacket 3.

FiGS. 6 and 7 illustrate a slightly modified vacuum bottle 83 which has a jacket S9 differing in certain respects from the jacket 3 of F168. 1 and 2. A vacuum insulated ller 99 is enclosed within the jacket 89. The filler 90 is essentially the same as the filler 2 although of a somewhat greater capacity. Accordingly, the various elements of the filler 99 will be identified by the same reference characters as in FIG. 2, so that it will not be necessary to describe the filler 90 in detail.

Similarly, the vacuum bottle 88 comprises a cup 91, a liner )2, and a closure 93 which are essentially the same as the corresponding

components

23, 55 and 76 of FIG. 2. The various components of the cup 91, the liner 92 and the closure 93 will lbe given the same reference characters as applied to the corresponding components in FIG. 2.

The illustrated jacket 89 of FIGS. 6 and 7 comprises a side wall 94 and a bottom wall 95 which are formed integrally, so that the bottom of the jacket is not removable. As shown, the side wall 94 is generally cylindrical, but tapers downwardly to -a slight extent. The bottom wall 9S is circular and generally disk-shaped, but arches upwardiy between its edge and central portions. Thus, the bottom wall 95 is convex upwardly. A downwardly projecting bead 96 is formed around the outer edge of the bottom wall 95.

Instead of utilizing the separate inserts 45 and 48, as in FIG. 2, the bottom wall 95 of FG. 7 is provided with an integral annular upwardly projecting rib or tlange vwhich forms a downwardly tapering socket 98 for the resilient filler supporting sleeve 42, which is the same as in FIG. 2.

The jacket S9 of FIGS. 6 and 7 is formed with a handle 99 which is essentially the same as the handle 13 of FlGS. 1 and 2.

The jacket 89 of FIGS. 6 and 7 has an upper annular collar member 100 which is essentially the same as the collar member 22 of FIG. 2, except that the collar member 100 is formed as a separate piece, rather than being formed integrally with the side wall 94. The lower end of the collar 100 is secured to the upper end of the side wall 94. As shown, the lower end of the collar 106 is formed with a shoulder 101 which is engageable with the upper end surface 102 of the side wall 94. The lower end of the collar 100 is provided with a reduced end portion 193 which is snugly received within the upper end of the side wall 94. The lower end of the collar may be cemented, heat sealed, welded or otherwise secured to the upper end of the side wall 94. Preferably, the side wall 94 and the collar 160 are made of plastic materials, although other materials may be employed. It is preferred to secure the collar 100 to the side wall 94 by a spin welding operation, which may be regarded as a form of heat sealing. In the spin welding operation, the collar 10@ is mounted on the side wall 94 and is spun relative to the side wall, with the result that the joint between the collar 100 and the side wall 94 is heated by friction. Sufficient heat may easily and quickly be developed in this manner to weld the collar 109 to the side wall 94.

The vacuum bottle 88 of FIGS. 6 and 7 is used in the same manner as the vacuum bottle 1 of FIGS. 1 and 2, except that the bottom of the jacket 89 cannot be removed, so that the filler 90 cannot be removed and replaced through the bottom of the jacket. To replace the Iiller 90, it is necessary to unscrew the liner 92 from the collar 100. This may be accomplished by extracting the O-ring 66 with a sharp pointed implement, as previously described. The extraction of the O-ring loosens the engagement between the

threads

64 and 65 so that the threads can be unscrewed without interference between the saw-

toothed serrations

70 and 71. When the vacuum bottle SS is rully assembled, the O-ring 66 prevents any leakage of fluids into the space within the jacket $9, so that the entire vacuum bottle may be immersed in water for washing purposes. As before, the liner 92 protects the vacuum insulated filler 9) from damage due to heat shock or the insertion of a spoon or other implement into the liner. The liner 92 affords a pouring lip 6) and also provides threads 84 which secure the closure 93 to the vacuum bottle. It will be recognized that the liner adds greatly to the utility and value of the vacuum bottle.

Various other modications, alternative constructions and equivalents may be employed without departing from the true spirit and scope of the invention, as exemplified in the foregoing description and defined in the following claims.

I claim:

1. In a vacuum bottle,

the combination comprising a wide-mouthed vacuum insulated filler,

a protective jacket mounted around said filler,

a plastic liner slidably received within said filler and covering the entire inner surface thereof,

said liner having an upper annular portion formed integrally therewith,

a pouring lip formed on said upper annular portion,

a collar portion on said jacket and received around said upper annular portion of said liner,

screw threads on said upper annular portion and said collar portion for disengageably securing said liner to said collar portion of said jacket,

an O-ring seal disposed between said upper annular portieri and said collar portion,

said O-ring seal being positioned outside said upper annular portion and below said pouring lip so that fluids poured from said liner will not come into contact with said O-ring seal,

nonretrograde serrations on said screw threads for preventing accidental unscrewing of said liner from said collar portion of said jacket,

a closure disengageably received in the upper annular portion of said liner and movable into sealing engagement therewith,

additional screw threads on said closure and said upper annular portion of said liner for disengageably securing said closure t0 said liner,

a bottom closure member on said jacket,

and additional screw threads on said bottom closure member and said jacket for disengageably securing said bottom closure member to said jacket so that said bottom closure member may be removed whereby said filler may be removed and replaced through the bottom of said jacket.

2. in a vacuum bottle,

the combination comprising a wide-mouthed vacuum insulated filler having inner and outer glass receptacle walls with an evacuated space therebetween,

a protective jacket mounted around the outside of said filler,

a plastic liner slidably received within said iiller and covering the entire inner wall thereof to protect said filler against damage while preventing any direct contact between said filler and the contents or said vacuum bottle,

said liner having an upper annular portion formed integrally therewith,

a pouring lip formed on said upper annular portion,

a collar portion on the upper end of said jacket and received around said upper annular portion of said liner,

mating screw threads on said upper annular portion and said collar portion for disengageably securing said liner to said collar portion of said jacket,

an O-ring seal disposed between said upper annular portion and said collar portion,

said O-ring seal being positioned outside said upper annular portion and below said pouring lip so that liquids poured from said liner will not come into Contact with said O-ring seal,

non-retrograde s-errations on said screw threads for preventing accidental unscrewing of said liner from said collar portion of said jacket,

a closure disengageably received in said upper annular portion of said liner and movable into sealing engagement thereof,

additional screw threads on said colsure and said upper annular portion of said liner for disengageably securing said closure to said liner,

said jacket having an upper member and a lower member which is removable from said upper member,

and additional mating screw threads on said upper and lower members of said jacket for disengageably securing said lower member to said upper member so that said lower member may be removed from said upper member to provide for removal of said filler from said jacket.

3. In a vacuum bottle,

the combination comprising a wide-mouthed vacuum insulated ller having inner and outer glass receptacle walls with an evacuated space therebetween,

a protective jacket mounted around the outside of said ller,

a plastic liner slidably received within said filler and covering the entire inner wall thereof to protect said tiller against damage while preventing any direct contact between said filler and the contents o said vacuum bottle,

said liner having an upper annular portion formed integrally therewith,

a pouring lip formed on said upper annular portion,

non-retrograde serrations on said screw threads for preenting accidental unscrewing of said liner from said collar portion of said jacket,

additional screw threads on said closure and said upper vacuum insulated filler having inner and outer glass receptacle walls with an evacuated space therebetween,

a protective jacket mounted around the outside of said iiller,

a resinous plastic liner corresponding closely in shape to said inner receptable wall and closely received therein for protecting said tiller against damage while preventing any direct contact between said tiller and the contents of said vacuum bottle,

a closure disengageably receivable in the upper end portion of said liner,

mating screw threads on said closure and said liner for disengageably securing said closure to said liner,

additional mating screw threads on said jacket and said liner for disengageably securing said liner to said jacket,

and serrations disposed between said jacket and said liner for preventing accidental unscrewing Aof said liner from said jacket,

whereby said closure may be removed and replaced without disturbing the threaded engaged between said liner and said jacket.

5. In a vacuum bottle, the combination comprising a vacuum insulated liller having inner and outer glass rev ceptacle walls with an evacuated space therebetween,

a protective jacket mounted around the outside of said filler,

a resinous plastic liner corresponding closely in shape to said inner receptable wall and closely received therein for protecting said ller against damage while preventing any direct contact between said liller and the contents of said vacuum bottle,

a closure disengageably receivable in the upper end portion of said liner,

additional mating screw threads on said jacket and said liner for disengageabiy securing said liner to said jacket,

mating serrations on said mating screw threads between said jacket and said liner for preventing accidental unscrewing of said liner from said jacket,

and a soft resilient sealing ring disposed between said liner and said jacket to for-m a seal therebetween while also resilently urging said serrations int-o mating engagement whereby said closure may be removed and replaced without disturbing the threaded engagement between said liner and said jacket.

6. In a vacuum bottle,

the combination comprising a vacuum insulated filler having inner and outer glass receptacle walls with an evacuated space therebetween,

said inner receptacle wall having a wide mouth corresponding closely in size to the maximum internal size of said inner Wall,

a resinous plastic liner corresponding closely in shape to said inner receptacle wall and closely received therein for protecting said filler against damage while also preventing any direct contact between said iiller and the contents of said vacuum bottle,

said liner being freely removable from said filler through said wide mouth,

and a protective jacket received around the outside of said liller,

said jacket having a top portion with an opening therein larger than the maximum outside diameter of said filler whereby said filler may be removed from said jacket through said opening,

said jacket having internal screw thereads thereon within said opening,

said liner having an integral annular shoulder projecting outwardly therefrom near the upper end thereof and extending over the upper end of said ller,

said liner having an enlarged upper annular member formed integrally therewith and projecting upwardly from the outside of said shoulder,

said enlarged annular member having external screw threads thereon for disengageably mating with said internal screw threads on said jacket whereby said liner may be unscrewed from said jacket and removed from said ller whereupon said filler may readily be removed from said jacket.

7. In a vacuum bottle, the combination comprising a vacuum insulated filler having inner and outer glass receptacle walls with an evacuated space therebetween,

a protective jacket mounted around the outside of said tiller,

a resinous plastic liner corresponding closely in shape to said inner receptacle wall and closely received therein for protecting said ller against damage while preventing any direct contact between said filler and the contents of said vacuum bottle,

a closure disengageabiy receivable in the upper end portion of said liner,

and disengageable anti-retrograde elements disposed between said jacket and said liner for preventing accidental unscrewing of said liner from said jacket,

whereby said closure may be removed and replaced without disturbing the threaded engagement between said liner and said jacket.

8. In a vacuum bottle,

a protective jacket mounted around the outside of said iiller,

a resinous plastic liner corresponding closely in shape to said inner receptacle wall and closely received therein for protecting said filler against damage while preventing any direct contact between said ller and the contents of said vacuum bottle,

a closure disengageably receivable in the upper end portion of said liner,

additional mating screw threads on said jacket and said liner for disengageably securing said liner to said jacket,`

mating anti-retrograde elements on said mating screw threads between said jacket and said liner for preventing accidental unscrewing of said liner from said jacket,

and a soft resilient sealing ring disposed between said liner and said jacket to form a seal therebetween while also resiliently urging said anti-retrograde elements into mating engagement whereby said closure may be removed and replaced without disturbing the threaded engagement between said liner and said jacket.

9. In a vacuum bottle,

the combination comprising a Vacuum insulated ller having inner and outer glass receptacle walls with an evacuated space therebetween,

said inner receptacle wall having a wide mouth corresponding closely in size to lthe maximum internal size of said inner wall,

a resinous plastic liner corresponding closely in shape to said Vinner receptacle wall and closely received therein for protecting said ller against damage while also preventing any direct contact between said iiller and the contents of said vacuum bottle,

said liner being freely removable from said Eller through said wide mouth,

and a protective jacket received around the outside of said iiller,

said jacket having a top portion with an opening therein larger than the maximum outside diameter of said iiller whereby said filler may be removed from said jacket through said opening,

said liner having yan integral annular shoulder projecting outwardly therefrom near the upper end thereof and extending over the upper end of said iiller,

said enlarged annular member and said jacket having mating screw threads thereon whereby said liner may be unscrewed from said jacket and removed from said filler whereupon said ller may readily be removed frorn said jacket.

10. In a vacuum bottle,

a protective jacket mounted around the outside of said ller,

a resinous plastic liner corresponding closely in shape to said inner receptacle wall and closely received therein for protecting said filler against damage while also preventing any direct contact between said filler and the contents of said vacuum bottle,

an upstanding annular flange formed integrally with said liner at the upper end thereof and forming a pouring lip on said liner,

said ange projecting substantially above said liner and said jacket,

and means forming a joint between the outside of said liner and the upper end of said jacket at a point below the upper end of said flange whereby said flange prevents the passage of any liquid over said joint when liquids are poured out of said liner.

11. In a vacuum bottle,

a protective jacket mounted around the outside of said ller,

said flange projecting substantially above said liner and said jacket,

and means forming a joint between the outside of said liner and the upper end of said jacket,

said flange projecting above said joint in overhanging relation thereto and being eective to prevent the passage of any liquid over said joint when liquids are poured out of said liner.

12. In a vacuum bottle,

a protective jacket mounted around the outside of said ller,

said ilange projecting substantially above said line1 and said jacket,

said flange having an upper annular surface which flares upwardly and outwardly to an outer annular edge from which said flange extends downwardly at a sharp angle,

said ilange extending above said joint in overhanging relation thereto for preventing the passage of any liquid over said joint when liquids are poured out of said liner.

13. In a vacuum bottle,

a protective jacket mounted around the outside of said filler,

a resinous plastic liner corresponding closely in shape to said inner receptacle wall and closely received therein for protecting said ller against damage while also preventing any direct contact between said ller and the contents of said vacuum bottle,

an upstanding annular ilange formed integrally with said liner at the upper end thereof and forming a pouring lip on said liner,

said flange projecting substantially above said liner and said jacket,

means connecting the outside of said liner to the upper end of said jacket at a point below the upper end of said ange,

a closure disengageably receivable in said opstanding annular flange to close said liner,

and mating screw threads on said closure and said ilange for disengageably securing said closure to said flange.

14. In a vacuum bottle,

a protective jacket mounted around the outside of said filler,

a resinous plastic liner corresponding closely in shape to said inner receptacle wall and closely received therein for protecting said filler against damage while also preventing any direct contact between said ller and the contents of said vacuum bottle,

said liner having an annular shoulder formed integrally therewith at the upper end thereof and projecting outwardly therefrom over the upper end of said llller,

an upstanding annular ilange formed integrally with said shoulder and projecting upwardly from the outer portion thereof to form a pouring lip on said liner,

said flange extending substantially above said liner and said jacket,

means connecting the outside of said liner to the upper end of said jacket at a point below the upper end of said ilange,

a closure disengageably receivable in said upstanding annular tlange and having a lower end portion movable into and out of sealing engagement with said shoulder for closing said liner,

and mating screw threads on said flange and said closure for disengageably securing said closure to said liner.

References Cited by the Examiner UNITED STATES PATENTS 1,721,311 7/ 1929 Munchen 21S-13 2,162,880 6/1939 Brown 215-43 2,419,291 4/ 1947 Senter 220-9 2,480,247 8/ 1949 Jamison et al. 21S-13 2,484,309 10/1949 Noeth 21S-13 2,954,888 10/1960 Bramming 21S-13 2,963,187 12/1960 Bramming 215-13 3,016,159 1/1962 Bramming 215-13 3,032,224 5/1962 Lou 215-13 3,071,273 l/1963 Bell 215-13 3,110,408 11/1963 Bramming 215--13 FOREIGN PATENTS 796,253 6/ 1958 Great Britain.

FRANKLIN T. GARRETT, Primary Examiner.

Claims

1. IN A VACUUM BOTTLE, THE COMBINATION COMPRISING A WIDE-MOUTHED VACUUM INSULATED FILLER, A PROTECTIVE JACKET MOUNTED AROUND SAID FILLER, A PLASTIC LINER SLIDABLY RECEIVED WITHIN SAID FILLER AND COVERING THE ENTIRE INNER SURFACE THEREOF, SAID LINER HAVING AN UPPER ANNULAR PORTION FORMED INTEGRALLY THEREWITH, A POURING LIP FORMED ON SAID UPPER ANNULAR PORTION, A COLLAR PORTION ON SAID JACKET AND RECEIVED AROUND SAID UPPER ANNULAR PORTION OF SAID LINER SCREW THREADS ON SAID UPPER ANNULAR PORTION AND SAID COLLAR PORTION FOR DISENGAGEABLY SECURING SAID LINER TO SAID COLLAR PORTION OF SAID JACKET, AN O-RING SEAL DISPOSED BETWEEN SAID UPPER ANNULAR PORTION AND SAID COLLAR PORTION, SAID O-RING SEAL BEING POSITIONED OUTSIDE SAID UPPER ANNULAR PORTION AND BELOW SAID POURING LIP SO THAT FLUIDS POURED FROM SAID LINER WILL NOT COME INTO CONTACT WITH SAID O-RING SEAL, NONRETROGRADE SERRATIONS ON SAID THREADS FOR PREVENTING ACCIDENTAL UNSCREWING OF SAID LINER FROM SAID COLLAR PORTION OF SAID JACKET, A CLOSURE DISENGAGEABLY RECEIVED IN THE UPPER ANNULAR PORTION OF SAID LINER AND MOVABLE INTO SEALING ENGAGEMENT THEREWITH, ADDITIONAL SCREW THREADS ON SAID CLOSURE AND SAID UPPER ANNULAR PORTION OF SAID LINER FOR DISENGAGEABLY SECURING SAID CLOSURE TO SAID LINER, A BOTTOM CLOSURE MEMBER ON SAID JACKET, AND ADDITIONAL SCREW THREADS ON SAID BOTTOM CLOSURE MEMBER AND SAID JACKET FOR DISENGAGEABLY SECURING SAID BOTTOM CLOSURE MEMBER TO SAID JACKET SO THAT SAID BOTTOM CLOSURE MEMBER MAY BE REMOVED WHEREBY SAID FILLER MAY BE REMOVED AND REPLACED THROUGH THE BOTTOM OF SAID JACKET.