Tethered two piece nestable bottle

Abstract

A plastic bottle formed of two tethered parts having relatively large threaded open ends facilitating hand or machine washing of the unthreaded bottle parts thereby facilitating repeated reuse of the bottle. This two part plastic bottle reduces use of materials, such as petroleum used for producing plastic bottles, and reduces land fill. The bottle is suitable for refrigerator storage of various beverages as well as juices and smoothies.

1 . A reusable bottle, comprising:
 a lower tumbler part having
 a substantially flat bottom and 
 a frusto-conical wall extending upwardly at increasing diameter from said bottom to a radially outward flared upper end with a radially outward opening circumferential groove and terminating in an upper cylindrical end concentric with said frusto-conical wall and having external threads and 
   an upper cover part having
 a narrow annular drinking neck extending upwardly at its upper end and 
 a cylindrical band at its lower end concentric with said annular neck including internal threads adapted for threaded engagement with said external threads on said lower part and a 
 tether having an end rigidly secured to said lower end of said upper cover part and a resilient loop adapted for stretch fit in said circumferential groove. 
   
   
   
       2 . The reusable bottle of  claim 1  wherein said lower parts are stackable within one another and said upper parts are stackable within one another with said parts tethered. 
   
   
       3 . The reusable bottle of  claim 2  wherein said drinking neck is externally threaded and a cap with internal threads is in threaded engagement with said neck. 
   
   
       4 . The reusable bottle of  claim 4  wherein said cap includes a resealable sipping opening.