CA1222465A - Drinking straw - Google Patents
Drinking strawInfo
- Publication number
- CA1222465A CA1222465A CA000464302A CA464302A CA1222465A CA 1222465 A CA1222465 A CA 1222465A CA 000464302 A CA000464302 A CA 000464302A CA 464302 A CA464302 A CA 464302A CA 1222465 A CA1222465 A CA 1222465A
- Authority
- CA
- Canada
- Prior art keywords
- straw
- diameter portion
- parts
- narrowed
- outer part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G21/00—Table-ware
- A47G21/18—Drinking straws or the like
- A47G21/189—Drinking straws or the like telescoping
Abstract
Abstract:
An extensible drinking straw includes outer and inner parts. When extended, an enlarged-diameter portion formed at an end of the inner part slides within the outer part and engages a narrowed-diameter portion formed at an end of the outer part. This prevents the inner part from separating from the outer part. Even if the parts are slid in the opposite direction or the inner part is pushed into the outer part, they are prevented from separating by the fact that the projecting end of the inner part has an expanded-diameter portion. Alternatively, this result can be achieved by forming the end of the outer part located opposite its narrowed-diameter portion as a further reduced-diameter portion. In addition, an inwardly protruding portion is formed on the outer part to lock the inner part in position when the straw is in its extended state.
An extensible drinking straw includes outer and inner parts. When extended, an enlarged-diameter portion formed at an end of the inner part slides within the outer part and engages a narrowed-diameter portion formed at an end of the outer part. This prevents the inner part from separating from the outer part. Even if the parts are slid in the opposite direction or the inner part is pushed into the outer part, they are prevented from separating by the fact that the projecting end of the inner part has an expanded-diameter portion. Alternatively, this result can be achieved by forming the end of the outer part located opposite its narrowed-diameter portion as a further reduced-diameter portion. In addition, an inwardly protruding portion is formed on the outer part to lock the inner part in position when the straw is in its extended state.
Description
_ inking straw The present invention relates to a drinking straw, and more particularly to an expandable, double-structured drinking straw.
An expandable straw is designed to be freely lengthened and shortered by sliding and fitting together inner and outer straw parts. Such a straw can be adjusted to a suitable length when used and kept short for storage or transportation. T~is type of straw is disclosed in Japanese Patent Application Laid Open No. 1976 36364, Japanese Utility Model Patent Application Laid Open Nos.
1979-65784, 1984 21284, and 1984-66731 and also in United States Patents Nos. 2,192,036, 2,192,037, 3,776,458.
However, the prior art straws have not proved entirely satisfactory in practice.
The object of the present invention is to provide a new and improved drinking straw of this type, and particularly a straw that is simple in structure, low in cost, easy to handle and reliable in operation.
Another object o~ this invention is to provide a drink-ing straw in which the inner and outer parts are prevented from becoming separated from each other, not only during use but also during the process of placing the straws in bags or during transportation.
3~
An expandable straw is designed to be freely lengthened and shortered by sliding and fitting together inner and outer straw parts. Such a straw can be adjusted to a suitable length when used and kept short for storage or transportation. T~is type of straw is disclosed in Japanese Patent Application Laid Open No. 1976 36364, Japanese Utility Model Patent Application Laid Open Nos.
1979-65784, 1984 21284, and 1984-66731 and also in United States Patents Nos. 2,192,036, 2,192,037, 3,776,458.
However, the prior art straws have not proved entirely satisfactory in practice.
The object of the present invention is to provide a new and improved drinking straw of this type, and particularly a straw that is simple in structure, low in cost, easy to handle and reliable in operation.
Another object o~ this invention is to provide a drink-ing straw in which the inner and outer parts are prevented from becoming separated from each other, not only during use but also during the process of placing the straws in bags or during transportation.
3~
- 2 -In accordance with an aspect of the invention there is provided a drinking straw comprising: an outer straw part having an integrally narrowed-diameter portion at one end;
an inner straw part having a first integrally enlarged-diameter portion at one end, the inner straw part beingslidably fitted in the outer straw part; wherein the narrowed-diameter portion of the outer straw part and the enlarged-diameter portion of the inner straw part engage each other when the inner and outer straw parts are moved in one direction to an extended position to prevent the separation of the inner and outer straw parts; said inner straw part having a second integrally enlarged-diameter portion at its opposite end; wherein said second enlarged-diameter portion projects from said one end of said outer straw part and engages with the narrowed-diameter portion to prevent the separation of the outer straw part and the inner straw part when the inner and outer straw parts are moved in the opposite direction to a retracted position.
The drawings show preferred embodiments of this inver-tion, in which:
Figure l(a) is a side view showing the compressed state of a first embodiment;
Figure l(b) is a longitudinal section of Figure l(a);
Figure 2(a) is a side view showing the extended state thereof;
Figure 2(b) is a longitudinal section of Figure 2(a);
Figure 3(I) is a longitudinal section showing the compressed state of a second embodiment;
Figure 3(II) is a side view showing the extended state thereof;
Figure 4 (I) is a longitudinal section showing the compressed state of a third embodiment;
Figure 4(II) is a side view showing the lengthened state thereof;
'2~
- 2a -Figure 5(I) is a longitudinal section showing the compressed state of a fourth embodiment; and Figure 5(II) is a side view showing the extended state thereof.
In the figures numeral 1 is an inner straw part having an outside diameter d. One end of the inner part 1 is inserted in an outer straw part 2 and has an enlarged-diameter portion la of length L2 that can slide along the ; ~
224~
inside of the outer part 2 which has an inner diameter D.
The outer part also has a narrowed-diameter portion 2a of length Ll. The inner diameter of this narrowed-diameter portion 2a slidingly engages the inner part 1. When the straw is extended, the portions la and 2a engage each other in an air tight manner and prevent separation of the parts.
Furthermore, the outer end of the inner part 1 has an expanded-diameter portion Ib of a diameter larger than the diameter d of the main portion of the inner part 1. This portion lb ensures that the inner part 1 always projects somewhat from the outer part 2.
It is preferable that the sum of the lengths 1.1 and L2 be at least equal to the diameter D, i.e. Ll + L2 _ D.
This prevents the straw being loose and shaky when it is extended.
In the two parts of Figure 3, the numeral 1' is the inner part with the outside diameter d. As in Embodiment 1, one end la' of this inner part 1' is enlarged to slide inside the outer part 2' and engage a narrowed portion 2a'.
In addition, the end of the outer part 2' located opposite portion 2a' has a reduced-diameter portion 2b' with an inside diameter somewhat smaller than the diameter D. This portion 2b' prevents the straw parts from being separated. As to the lengths of the portions 2a' and la', the same requirement as in Embodiment 1 applies.
In Figure 4~ the internal surface of the outer part 2 is formed with a protruding ridge 3 to lock the inner and outer straws in the extended position. This protruding ridge 3 is shown as formed by pressing inward the whole circumference of the outer part 2. The protrusion can, alternatively, be provided in other different ways such as by three inwardly projected knobs arranged around the circumferential line. The essential requirement for this inward]y protruding portion 3 is that it allows the portion la of the inner part 1 to pass easily when the straw is ~'2;~6~
being extended but blocks or at least significantly retards return movement.
Figure 5 applies a similar protruding portion 3' to the embodiment o~ Figure 3.
In use, the straw is extended by holding and pulling the ends of the inner and outer parts with the fingers.
The enlarged-diameter portion of the inner part and the narrowed-diameter portion of the outer part engage each other in an air tight manner facilitating drinking and preventing the inner and outer parts becoming separated.
If, by mistake, the straw parts are pulled in the opposite direction, they cannot separate by virtue of either the expanded-diameter portion lb of the inner part 1 or the reduced-diameter portion 2b' of the outer part 2'. These portions also ensure that the inner part always projects to some extent from the outer part.
an inner straw part having a first integrally enlarged-diameter portion at one end, the inner straw part beingslidably fitted in the outer straw part; wherein the narrowed-diameter portion of the outer straw part and the enlarged-diameter portion of the inner straw part engage each other when the inner and outer straw parts are moved in one direction to an extended position to prevent the separation of the inner and outer straw parts; said inner straw part having a second integrally enlarged-diameter portion at its opposite end; wherein said second enlarged-diameter portion projects from said one end of said outer straw part and engages with the narrowed-diameter portion to prevent the separation of the outer straw part and the inner straw part when the inner and outer straw parts are moved in the opposite direction to a retracted position.
The drawings show preferred embodiments of this inver-tion, in which:
Figure l(a) is a side view showing the compressed state of a first embodiment;
Figure l(b) is a longitudinal section of Figure l(a);
Figure 2(a) is a side view showing the extended state thereof;
Figure 2(b) is a longitudinal section of Figure 2(a);
Figure 3(I) is a longitudinal section showing the compressed state of a second embodiment;
Figure 3(II) is a side view showing the extended state thereof;
Figure 4 (I) is a longitudinal section showing the compressed state of a third embodiment;
Figure 4(II) is a side view showing the lengthened state thereof;
'2~
- 2a -Figure 5(I) is a longitudinal section showing the compressed state of a fourth embodiment; and Figure 5(II) is a side view showing the extended state thereof.
In the figures numeral 1 is an inner straw part having an outside diameter d. One end of the inner part 1 is inserted in an outer straw part 2 and has an enlarged-diameter portion la of length L2 that can slide along the ; ~
224~
inside of the outer part 2 which has an inner diameter D.
The outer part also has a narrowed-diameter portion 2a of length Ll. The inner diameter of this narrowed-diameter portion 2a slidingly engages the inner part 1. When the straw is extended, the portions la and 2a engage each other in an air tight manner and prevent separation of the parts.
Furthermore, the outer end of the inner part 1 has an expanded-diameter portion Ib of a diameter larger than the diameter d of the main portion of the inner part 1. This portion lb ensures that the inner part 1 always projects somewhat from the outer part 2.
It is preferable that the sum of the lengths 1.1 and L2 be at least equal to the diameter D, i.e. Ll + L2 _ D.
This prevents the straw being loose and shaky when it is extended.
In the two parts of Figure 3, the numeral 1' is the inner part with the outside diameter d. As in Embodiment 1, one end la' of this inner part 1' is enlarged to slide inside the outer part 2' and engage a narrowed portion 2a'.
In addition, the end of the outer part 2' located opposite portion 2a' has a reduced-diameter portion 2b' with an inside diameter somewhat smaller than the diameter D. This portion 2b' prevents the straw parts from being separated. As to the lengths of the portions 2a' and la', the same requirement as in Embodiment 1 applies.
In Figure 4~ the internal surface of the outer part 2 is formed with a protruding ridge 3 to lock the inner and outer straws in the extended position. This protruding ridge 3 is shown as formed by pressing inward the whole circumference of the outer part 2. The protrusion can, alternatively, be provided in other different ways such as by three inwardly projected knobs arranged around the circumferential line. The essential requirement for this inward]y protruding portion 3 is that it allows the portion la of the inner part 1 to pass easily when the straw is ~'2;~6~
being extended but blocks or at least significantly retards return movement.
Figure 5 applies a similar protruding portion 3' to the embodiment o~ Figure 3.
In use, the straw is extended by holding and pulling the ends of the inner and outer parts with the fingers.
The enlarged-diameter portion of the inner part and the narrowed-diameter portion of the outer part engage each other in an air tight manner facilitating drinking and preventing the inner and outer parts becoming separated.
If, by mistake, the straw parts are pulled in the opposite direction, they cannot separate by virtue of either the expanded-diameter portion lb of the inner part 1 or the reduced-diameter portion 2b' of the outer part 2'. These portions also ensure that the inner part always projects to some extent from the outer part.
Claims
1. A drinking straw comprising:
an outer straw part having an integrally narrowed-diameter portion at one end;
an inner straw part having a first integrally enlarged-diameter portion at one end, the inner straw part being slidably fitted in the outer straw part;
wherein the narrowed-diameter portion of the outer straw part and the enlarged-diameter portion of the inner straw part engage each other when the inner and outer straw parts are moved in one direction to an extended position to prevent the separation of the inner and outer straw parts;
said inner straw part having a second integrally enlarged-diameter portion at its opposite end;
wherein said second enlarged-diameter portion projects from said one end of said outer straw part and engages with the narrowed-diameter portion to prevent the separation of the outer straw part and the inner straw part when the inner and outer straw parts are moved in the opposite direction to a retracted position.
an outer straw part having an integrally narrowed-diameter portion at one end;
an inner straw part having a first integrally enlarged-diameter portion at one end, the inner straw part being slidably fitted in the outer straw part;
wherein the narrowed-diameter portion of the outer straw part and the enlarged-diameter portion of the inner straw part engage each other when the inner and outer straw parts are moved in one direction to an extended position to prevent the separation of the inner and outer straw parts;
said inner straw part having a second integrally enlarged-diameter portion at its opposite end;
wherein said second enlarged-diameter portion projects from said one end of said outer straw part and engages with the narrowed-diameter portion to prevent the separation of the outer straw part and the inner straw part when the inner and outer straw parts are moved in the opposite direction to a retracted position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP84111607A EP0176608A1 (en) | 1984-09-28 | 1984-09-28 | Drinking straw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1222465A true CA1222465A (en) | 1987-06-02 |
Family
ID=8192183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000464302A Expired CA1222465A (en) | 1984-09-28 | 1984-09-28 | Drinking straw |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0176608A1 (en) |
| AU (1) | AU571583B2 (en) |
| CA (1) | CA1222465A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0237427Y2 (en) * | 1985-03-08 | 1990-10-09 | ||
| JPS62249616A (en) * | 1986-04-22 | 1987-10-30 | 三陽紙器株式会社 | Extensible straw for beverage |
| KR20020072316A (en) * | 2001-03-08 | 2002-09-14 | 임희봉 | Manufacture method and device of vinyl pack air injection consist of pipe |
| US8494654B2 (en) | 2010-09-22 | 2013-07-23 | Boston Scientific Neuromodulation Corporation | Systems and methods for making and using paddle leads with adjustable spacing between adjacent electrodes |
| US20150014431A1 (en) * | 2013-07-14 | 2015-01-15 | Tracy A. Whittaker | Drinking Straw and Embellishment System |
| US20170143946A1 (en) * | 2014-07-21 | 2017-05-25 | Roy J Martin | Foam applicator for in-ear use |
| US11298514B2 (en) | 2016-12-26 | 2022-04-12 | Roy J. Martin | Foam applicator for in-ear use |
| KR102248853B1 (en) * | 2018-12-04 | 2021-05-07 | 주식회사 서일 | Telescopic Paper Straw for Drinks |
| DE102019104588A1 (en) * | 2019-02-22 | 2020-08-27 | 5G Investment GmbH & Co. KG | Adjustable length drinking straw |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR622685A (en) * | 1926-02-08 | 1927-06-03 | Personal torch | |
| US2192037A (en) * | 1939-07-22 | 1940-02-27 | L Ray Schuessler | Sipper |
| US2288848A (en) * | 1940-11-04 | 1942-07-07 | Frank C Hamilton | Sipper |
| GB904010A (en) * | 1960-12-07 | 1962-08-22 | Yat Chuen Yuen | Improvements in or relating to drinking straws and drinking appliances |
| US3189171A (en) * | 1963-12-05 | 1965-06-15 | Ruth S Miller | Compact drinking straw |
| US3220587A (en) * | 1964-04-30 | 1965-11-30 | Anthony L Griffin | Bottle with self-contained drinking straw |
| US4340175A (en) * | 1980-04-17 | 1982-07-20 | Ladislav Danek | Mechanical straw pencil |
| EP0139074A3 (en) * | 1983-04-11 | 1985-06-05 | Sanyo Shiki Kabushiki Kaisha | Telescopic drinking straw |
| EP0172395A1 (en) * | 1984-07-27 | 1986-02-26 | Overbeck GmbH & Co. | Drinking straw with a variable length, and method and apparatus to manufacture it |
-
1984
- 1984-09-28 CA CA000464302A patent/CA1222465A/en not_active Expired
- 1984-09-28 EP EP84111607A patent/EP0176608A1/en not_active Withdrawn
- 1984-10-03 AU AU33813/84A patent/AU571583B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU3381384A (en) | 1986-04-10 |
| EP0176608A1 (en) | 1986-04-09 |
| AU571583B2 (en) | 1988-04-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |