Extensible straw assembly for beverages
OwnerKoichi Inabainventor
Life of this patent
Estimating the term…
Abstract
A telescopic straw assembly has an outer straw with a collar of reduced diameter at one end through an inner straw of smaller diameter can be withdrawn to increase the length of the straw with a minimum resistance. The inner end of the inner straw has an intermediate portion adjacent its inner end of a larger diameter which is designed to be pulled telescopically into the outer straw's collar portion and in so doing expand the collar portion to provide an airtight seal and firmly hold the straws together. The straws have additional interengaging features to further stabilize them both axially and radially when in extended position.
Claims17
An extensible straw for beverages having inner and outer telescopically interfitted straws, the outer one of said straws having an elongated main portion, the outer end of which is formed into a collar portion providing a throat of reduced internal cross section;
- an inner straw telescopically received within said outer straw and when fully retracted into said outer straw the outer end thereof projects beyond said collar portion, said inner straw having a main portion of an outer diameter such that it will easily slide through said collar portion without requiring radial expansion thereof, the inner end of said inner straw having an intermediate section adjacent the inner end thereof of an outer diameter greater than the inner diameter of said collar portion, outwardly tapered complementary transition sections on both said inner and outer straws positioned to engage to limit outward extension of said inner straw and radially inwardly extending stop means formed in the walls of said outer straw for engaging the inner end of said inner straw when said transition sections are engaged for preventing retraction of said inner straw into said outer straw.
An extensible straw for beverages having inner and outer telescopically interfitted straws, the outer one of said straws having an elongated main portion, the outer end of which is formed into a collar portion providing a throat of reduced internal cross section;
- said inner straw telescopically received within said outer straw and when fully retracted into said outer straw the outer end thereof projecting beyond said collar portion, said inner straw having a main portion of an outer diameter such that it will easily slide through said collar portion without requiring radial expansion thereof, said inner straw having an intermediate section adjacent the inner end thereof of an outer diameter greater than the inner diameter of said collar portion whereby said intermediate section causes radial extension of said collar portion for forming an airtight seal between said straws when the inner straw is fully extended, stop means for preventing further extension of the straws when the collar portion and intermediate section are fully telescopically engaged.
Dependencies are inferred from the claim text.