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Insulator sleeve for a thermos bottleInsulator sleeve for a thermos bottle description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080017654, Insulator sleeve for a thermos bottle. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001]1. Field of the Invention [0002]This invention relates to an insulator sleeve for a thermos bottle, more particularly to an insulator sleeve having a folded insulator wall covered by a surface layer. [0003]2. Description of the Related Art [0004]FIGS. 1 and 2 illustrate a conventional insulator sleeve for a thermos bottle. The insulator sleeve includes a cylindrical body 101 and a base 102 stitched to a bottom end of the cylindrical body 101. The cylindrical body 101 includes annular inner and outer surface layers 12, 13 and an annular insulator wall 11 of a foamed material sandwiched between the inner and outer surface layers 12, 13. The cylindrical body 101 is formed from two symmetrical halves that are stitched together. The conventional insulator sleeve is disadvantageous in that a top end of the insulator wall 11 is exposed from the inner and outer surface layers 12, 13, which results in an adverse effect on the appearance of the insulator sleeve. SUMMARY OF THE INVENTION [0005]The object of the present invention is to provide an insulator sleeve that can overcome the aforesaid drawback of the prior art. [0006]According to one aspect of this invention, there is provided an insulator sleeve that comprises: a seamed cylindrical body having top and bottom open ends respectively defining top and bottom openings, the seamed cylindrical body including an annular folded insulator wall of an insulator material, and an annular folded surface layer attached to the folded insulator wall, the folded insulator wall extending from the top open end to the bottom open end of the seamed cylindrical body, and having an outer surface, a folded end, and two free ends that are substantially flush with each other, the folded surface layer covering the outer surface of the folded insulator wall, and having a folded end that cooperates with the folded end of the folded insulator wall to define the top open end of the seamed cylindrical body; and a base secured to the bottom open end of the seamed cylindrical body for covering the bottom opening of the seamed cylindrical body. [0007]According to another aspect of this invention, there is provided a method for making an insulator sleeve. The method comprises: attaching a surface layer to an insulator sheet of an insulator material; folding the assembly of the surface layer and the insulator sheet into symmetrical halves such that the folded halves of the insulator sheet are sandwiched between the folded halves of the surface layer; scrolling and stitching the folded symmetrical halves of the assembly of the surface layer and the insulator sheet into a cylindrical body; and securing a base to a bottom open end of the cylindrical body. BRIEF DESCRIPTION OF THE DRAWINGS [0008]Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment of this invention, with reference to the accompanying drawings, in which: [0009]FIG. 1 is a perspective view of a conventional insulator sleeve; [0010]FIG. 2 is a sectional view of the conventional insulator sleeve; [0011]FIG. 3 is a perspective view of the preferred embodiment of an insulator sleeve according to this invention; [0012]FIG. 4 is a sectional view of the preferred embodiment; [0013]FIGS. 5A to 5E are perspective views to illustrate consecutive steps of the first preferred embodiment of a method for forming an insulator sleeve according to this invention; [0014]FIGS. 6A to 6E are perspective views to illustrate consecutive steps of the second preferred embodiment of the method according to this invention; and [0015]FIGS. 7A to 7E are perspective views to illustrate consecutive steps of the third preferred embodiment of the method according to this invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0016]FIGS. 3 and 4 illustrate the preferred embodiment of an insulator sleeve for a thermos bottle according to this invention. The insulator sleeve includes: a seamed cylindrical body 5 having top and bottom open ends respectively defining top and bottom openings 510, 520, the seamed cylindrical body 5 including an annular folded insulator wall 4 of an insulator material, and an annular folded surface layer 3 attached to the folded insulator wall 4, the folded insulator wall 4 extending from the top open end 51 to the bottom open end 52 of the seamed cylindrical body 5, and having an outer surface, a folded end 41, and two free ends 42 that are substantially flush with each other, the folded surface layer 3 covering the outer surface of the folded insulator wall 4, and having a folded end 31 that cooperates with the folded end 41 of the folded insulator wall 4 to define the top open end 51 of the seamed cylindrical body 5; and a base 6 secured to the bottom open end 52 of the seamed cylindrical body 5 for covering the bottom opening 520 of the seamed cylindrical body 5. [0017]In this embodiment, the folded insulator wall 4 includes annular inner and outer wall portions 43, 44 that respectively define the free ends 42 of the folded insulator wall 4 and that are stacked and are adhesively bonded together. [0018]The base 6 and the seamed cylindrical body 5 are stitched together. The base 6 includes a circular two-layered insulator wall 61 of the insulator material, and inner and outer surface layers 62, 63. The two-layered insulator wall 61 of the base 6 has inner and outer wall surfaces 611, 612. The inner and outer surface layers 62, 63 are respectively attached to the inner and outer wall surfaces 611, 612 of the two-layered insulator wall 61 of the base 6. A vent hole 65 is formed in the base 6 for facilitating insertion of the thermos bottle into the insulator sleeve. [0019]FIG. 5A to 5E illustrate consecutive steps of the first preferred embodiment of a method for making the insulator sleeve of this invention. The method includes the steps of: attaching a surface layer 3' to an insulator sheet 4' of an insulator material (see FIGS. 5A and 5B); folding the assembly of the surface layer 3' and the insulator sheet 4' along a folding line 70 into symmetrical halves such that the folded halves of the insulator sheet 4' are sandwiched between the folded halves of the surface layer 3' (see FIG. 5C); scrolling and stitching the folded symmetrical halves of the assembly of the surface layer 3' and the insulator sheet 4' into a cylindrical body 5' (see FIG. 5D and FIG. 5E); and securing a base 6' to a bottom open end of the cylindrical body 5' by stitching techniques (see FIG. 4). Note that the folded symmetrical halves of the surface layer 3' and the insulator sheet 4' may have a large size so as to be cut into different sizes for preparation of the cylindrical body 5 and the base 6. [0020]In this embodiment, the folded halves of the insulator sheet 4' are adhesively bonded together prior to the scrolling operation. Continue reading about Insulator sleeve for a thermos bottle... Full patent description for Insulator sleeve for a thermos bottle Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Insulator sleeve for a thermos bottle patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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