US RE26724 E
Description (OCR text may contain errors)
Nov. 25, 1969 R. PAQUIN 26,724
REFRIGERATED TUMBLER Original Filed May 2. 1966 Fig.1. 23
2o m J: f i 4/ 2 IN VEN TOR ATTORNEYS ROGER L. P4 l/V BY Q United States Patent Int. Cl. F25d 3/08 US. Cl. 62-457 2 Claims Matter enclosed in heavy brackets If] appears in the original patent but forms no part of this reissue specification; matter printed in italics indicates the additions made by reissue.
ABSTRACT OF THE DISCLOSURE A double walled tumbler which can be used without a persons lip becoming frozen thereto by providing a lip of insulating material such as polyethylene extending above the refrigerant hermetically sealed therein.
This invention relates to an improved double-walled tumbler for serving drinks requiring refrigeration.
Drinks such as iced tea, soft drinks, and many warmclimate beverages, especially in tropical climates, need refrigeration after being served, either to cool them then or to keep them cool after serving, if they have been previously cooled. Double-walled tumblers with a refrigerant liquid between walls enable such refrigeration without having to dilute the drink, as occurs when ice is put directly into the glass.
When refrigerant in a double-walled tumbler is frozen prior to use, it keeps the beverage cool or cools a warm beverage. However, it is difficult to drink directly from such a tumbler because the edge of the tumbler is too cold. For example, the drink may be about 40 F., but the refrigerant may be about 20 F.a temperature which can even cause a persons lip to stick to the tumbler.
The present invention solves this problem and provides a double-walled refrigerant-employing tumbler which can safely and comfortably be drunk directly from. it does this by providing, as an integral part of the tumbler, a lip that extends a substantial distance above the refrigerant, so that the persons mouth is insulated from the cold refrigerant and even from the beverage below the lip.
This and other objects, advantages, and features of the invention will appear from the following description of a preferred embodiment thereof.
In the drawings:
FIG. 1 is a view in elevation and partly in section of a tumbler embodying the principles of the invention.
FIG. 2 is a fragmentary enlarged view in elevation and in section of an upper portion of the tumbler of FIG. 1 before the two receptacles are sealed together.
FIG. 3 is a fragmentary enlarged view in elevation and in section of a bottom portion of the tumbler in FIG. 1.
FIG. 4 is a bottom plan view of the tumbler of FIG. 1.
The drawings show a round tumbler comprising an inner receptacle 11 and an outer receptacle 12, with a refrigerant liquid 13 between them.
The inner receptacle 11 has a generally vertical side wall 14 which preferably tapers inwardly at about 6 from its upper end to a bottom wall 15. At the upper end of the side wall 14 is a radially outwardly extending flange 16. The flange 16 has a flat lower face 17 surrounding :1 depending annular projection 18. A curved portion 19 of the flange 16 connects it to the side wall 14 and to a lip 20 which extends from the upper end of the side wall 14 for a substantial distance above the flange 16.
Re. 26,724 Ri$$l18d Nov. 25, 1969 The lip 20, like the rest of the receptacle 11 with which it is integral, is made from an insulating plastic such as polyethylene. It is substantially cylindrical, preferably tapering inwardly toward the top about 1 on each of its inner and outer surfaces 21 and 22. It preferably has a smoothly rounded upper edge 23. This lip 20 serves to insulate the user's lips from the refrigerant liquid 13, so that the tumbler is comfortably used.
The outer receptacle 12, also made from a suitable plastic, such as polyethylene and preferably from the same plastic as the inner receptacle 11, also has a generally vertical side wall 24 that preferably slopes in and down at about 4 to the vertical to a bottom wall 25. At its upper edge the receptacle 11 has a flange 26 whose upper surface 27 is initially provided with a plurality of annular ribs 28. Also, the upper part of the side wall 25 is provided with a plurality of vertical ribs 29, so that they can be engaged by a chuck of a spin-weld machine.
In assembly, the first step is to spin-weld the two receptacles 11 and 12 together at their flanges 16 and 26. With the ribs 29 in a chuck, the relative movement of the flanges 26 and 16 and the friction of their contact melts the ribs 28 and fuses the faces 17 and 27 together to seal and secure them to each other. Then the assembly is inverted, and the space between the receptacles 11 and 12 is filled with the refrigerant 13.
For this purpose, the bottom wall 25 is provided with an integral inlet fitting 30 having a cylindrical wall 31 extending up to support a thickened portion 32 of the bottom wall 15. A plurality of slots 33 enable the refrigerant to pass in from the inlet 30 to the space between the receptacles. The space is preferably filled about of a suitable refrigerant liquid 13, such as a mixture of water with glycerine or a glycol. Then the bottom opening is closed by a suitable plug 35, which may be spin-welded to the fitting 30, especially if made from the same plastic.
To provide insulation for the tumbler 10, a stretch knit sock 40 may be placed around the side wall 24 of the outer receptacle 12. The tubular sock 40 preferably has an elastic 41 built into its upper end and an elastic 42 built into its lower end. The sock 40 may be provided in a variety of colorful and decorative designs. It is quite eflective in its insulation, not only extending the period over which the refrigerant 13 is effective but also giving the user a more comfortable feel, by not being disagreeably cold to the touch. It also prevents condensation of moisture and the formation of frost.
The tumbler 10, before use, is placed upside down in a freezer to freeze the refrigerant 13, and is then inverted and a drink poured into the inner receptacle 11, up to about the level of the flange 16. Very rapid heat transfer is provided between the beverage and the refrigerant 13, so that a room temperature beverage almost immediately is made palatably cool and is kept cool for an extended period. It can be refilled several times before losing its cooling power.
To those skilled in the art to which this invention relates, many changse in construction and widely differing embodiments and applications of the invention will suggest themselves without departing from the spirit and scope of the invention. The disclosures and the description herein are purely illustrative and are not intended to be in any sense limiting.
1. A double-walled drink-refrigerating tumbler, including in combination:
an inner receptacle [of insulating plastic] for holding a beverage, having a generally vertical first side wall and a first bottom wall, a radially outwardly extending first flange at the top of said first side wall and having a lower face, and a generally cylindrical vertical lip of insulating plastic extending upwardly from said first side wall, a substantial distance above said first flange,
the faces being secured by molten concentric ribs on one face fused with the other face, said insulating plastic being polyethylene, and
an outer receptacle of insulating plastic having a a stretch-knit sock covering said second side wall up generally vertical second side wall higher than said to said second flange and having elastic retainers at first side wall, a second bottom wall, and a radially each end, one just beneath said second flange and outwardly extending second flange at the upper end one at the bottom of said second walL] of said second side wall, the second flange having 2. The device of claim 1 further including a plurality [and having] an upper face secured to said lower of ribs 0n the outer wall of the outer receptacle below and face of said first flange to provide an uninterrupted contiguous the second flange, and said insulating plastic fluid seal between said inner and outer receptacles, being polyethylene. [and sealed to said lower face of said first flange to secure said inner and outer receptacles together,] said second side wall thereby being spaced outwardly from said first side wall and said first bottom wall 15 being spaced above said second bottom wall, to pro- References Cited The following references, cited by the Examiner, are of record in the patented file of this patent or the original patent. vlde a fluid-tight refrlgerant-contammg space, and a refrigerant liquid filling most of said space and lying UNITED STATES PATENTS below said flanges and serving, after being initially 2 622 415 12/1952 Landers et a1 62 4S7 cooled to a desired temperature, to cool and keep 20 2926'5O8 3/1960 Moon 62 457 cool for a period of time a beverage contained in 3205678 9/1965 Stoner 62 457 said inner receptacle up to the height of said flanges, 3269l44 8/1966 Pods 62,457 said lip enabling a user to drink the beverage while 3:302:427 2/1967 'gi 62 457 being insulated from the refrigerant liquid. [a plurality of ribs on the outer wall of the outer re- 25 LLOYD L. KING, Primar Examine ceptacle below and contiguous the second flange, y r