Fluid sprinkling – spraying – and diffusing – Fountains or drinking tubes and straws – Drinking
Patent
1987-02-20
1989-07-25
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Fountains or drinking tubes and straws
Drinking
285260, 285302, A47G 2118
Patent
active
048505331
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a telescopic sucking tube usually known as a drinking straw made of a synthetic resin which is used for drinking fruit juices, milk, refreshing drinks or the like.
BACKGROUND ART
Most conventional drinking straws have a single slender, tubular shape. Such a straw used for sucking drinking water or the like requires a fixed length for suction in view of the depth of the container which is used, while a straw as short as possible is desirable for the storage thereof, carriage, transportation and sale together with a container for beverage onto which such straw is attached.
Double telescopic sucking tubes or drinking straws have been known for solving the above problems. That type of drinking straw or sucking tube consists of a tube section having a larger diameter and another tube section having a smaller diameter which has been inserted into the inside of said larger diameter tube section (hereinafter referred to simply as "larger tube"). In case of sucking use as a drinking straw, the samller diameter tube section (hereinafter referred to simply as "smaller tube") may be drawn out from the larger tube to extend the length of the tube, while the smaller tube may be inserted deeply in the larger tube in the case where such telescopic sucking tube is not extended for suction.
Furthermore, it is desirble in such a double drinking straw or sucking tube that slip-preventing force acts between the smaller and larger tube in order that the smaller tube does not slip out or separate easily from larger tube in the case when the tube is extended for suction. It is also desirable that air not be aspirated from and liquid does not leak from the joint portion between the tubes when in use for suction. In this respect, both the tubes asre arranged in such manner that one end of the smaller tube which remains in the larger tube in the case when both the tubes are used together for sucking a drink is expanded to form a trumpet shape. A convex edge portion of the trumpet-shaped tube is in tight contact with the inner surface of the larger tube.
In the telescoped drinking draw or double sucking tube described above, the smaller tube has one end formed into an annular convex portion such as a trumpet-shaped or knot-like convex portion, and the convex portion is tightly contacted with the inner surface of the larger tube. In the above construction, however, no other portion of the smaller tube comes in tight contact with the inner surface of the larger tube, so that the smaller tube is unstable with respect to the larger tube. As a result, a stable sliding operation as well as a tightly contacting state established between said larger and smaller tubes cannot be maintained.
DISCLOSURE OF THE INVENTION
An object of the present invention is to provide a telescopic drinking straw or sucking tube having a novel construction by which the problem arising from undesired air suction and liquid leakage due to shaking of the smaller tube can be solved through a mutually related construction between the larger tube and the smaller tube.
A further object of the present invention is to provide a telescopic drinking straw or sucking tube having a novel construction by which said problem can be solved by suitably selecting synthetic resin materials for producing the larger and smaller tubes. The object is to have a structure in which there is no shaking of the smaller tube in the larger tube.
In a telescopic drinking straw or sucking tube consisting of a larger diameter tube section and a smaller diameter tube section inserted in the hollow portion of said larger tube, the structure of the present invention comprises a flanged formed on one end of the smaller tube so as to be in tight contact with the inner surface of said larger tube, and an additional convex portion or guide formed on the inside of said larger tube in the vicinity of the end portion from which said smaller tube is drawn out in such a manner that said convex portion is always in contact with the outer surface of said smaller
REFERENCES:
patent: 2192037 (1940-02-01), Hamilton
patent: 2392479 (1946-01-01), Humbert
patent: 3346187 (1967-10-01), Mueller
patent: 3971578 (1976-07-01), Schemith
patent: 4152017 (1979-05-01), Abramson
patent: 4657182 (1987-04-01), Hoshi
patent: 4688721 (1987-08-01), Inaba
Banba Takeshi
Hoshi Katsumasa
Kamei Ryosuke
Nomura Yukihiro
Shibano Hiroshi
Forman Michael J.
Kashnikow Andres
Showa Denko Kabushiki Kaisha
LandOfFree
Telescopic drinking straw does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Telescopic drinking straw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telescopic drinking straw will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2351669