EP0433532B1 - Cap for writing instruments containing ink - Google Patents
Cap for writing instruments containing ink Download PDFInfo
- Publication number
- EP0433532B1 EP0433532B1 EP19900104659 EP90104659A EP0433532B1 EP 0433532 B1 EP0433532 B1 EP 0433532B1 EP 19900104659 EP19900104659 EP 19900104659 EP 90104659 A EP90104659 A EP 90104659A EP 0433532 B1 EP0433532 B1 EP 0433532B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cap
- retaining clip
- clip
- axial
- safety
- 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 - Lifetime
Links
- 238000009423 ventilation Methods 0.000 claims description 16
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 206010003497 Asphyxia Diseases 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 230000009747 swallowing Effects 0.000 description 2
- 241000167880 Hirundinidae Species 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
- B43K23/08—Protecting means, e.g. caps
- B43K23/12—Protecting means, e.g. caps for pens
- B43K23/122—Protecting means, e.g. caps for pens with means for preventing choking
- B43K23/124—Protecting means, e.g. caps for pens with means for preventing choking comprising an air passage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
- B43K23/08—Protecting means, e.g. caps
- B43K23/12—Protecting means, e.g. caps for pens
- B43K23/126—Protecting means, e.g. caps for pens with clips
Definitions
- the invention relates generally to an improvement to caps for writing instruments containing ink and in particular to a cap with a safety ventilation device in order to facilitate an air flow along the cap, if the latter has lodged in a person's windpipe, for example of a child, when swallowed accidentally.
- a cap for a writing instrument containing ink having safety ventilation means enabling an air flow along the cap, if the cap has lodged in a person's windpipe when swallowed accidentally, said cap being closed on all sides with the exception of an insertion end, said safety ventilation means comprising at least one axial ventilation path on the outside of the cap, which along at least part of its axial extension has an open cross-sectional configuration, whereby when a covering is placed around the cap, a cross-sectionl area for ventilation in each radial plane is defined having a throughflow capacity corresponding to the air requirement of a person, said ventilation path comprising a space between a substantially plate-like retaining clip and the outer surface of the cap, said retaining clip being attached adjacent the closed axial end to the cap, in which the spring deflection of said clip being limited by a stop for maintaining a minimum spacing with respect to the cap, said clip in its base portion has a perforation aligned substantially axially to and communicating with said space between the cap
- the resilient connecting webs in the base portion also contribute to preventing injuries to the windpipe or gullet.
- a feature of the caps according to the present invention is the high sealing function resulting from the fact that the caps are closed on all sides, i.e. there are no perforations leading into the inside of the caps.
- the caps therefore corresponds in their sealing function to conventional caps used in writing instruments without a safety ventilation device.
- Existing caps can therefore readily be replaced by safety caps according to the invention.
- the construction of the safety ventilation device according to the invention has advantages both as regards manufacturing techniques, since it is not necessary to form any cavities which are not easily accessible, as well as an improved safety function, in that the portions of the caps, which are critical, can readily be checked at a glance as regards their functional state.
- a further advantage is the relatively high freedom as regards the design of the caps.
- the cap bears the general reference numeral 1.
- the cap 1 has a substantially tubular or cylindrical shape with an outer diameter of normally up to 16 mm.
- the cap is closed at one axial end, whereas the other axial end is provided with an insertion opening 4.
- the writing part 9 of the writing instrument 8 supporting the writing point 10 is inserted by way of the insertion opening 4.
- a retaining clip 2 extending coaxially to the cap 1 is attached by its base region 12 to the closed top of the cap 1.
- the base region 12 may be curved and contains a perforation 3 aligned substantially axially.
- the airway of the present embodiment comprises the perforation 3 and the gap 6 connected thereto between the retaining clip 2 and the outer surface of the cap 1.
- the airway should have a cross-sectional area of at least 3.4 mm 2 , preferably greater equal to 6.8 mm 2 , at any axial point along the cap.
- the retaining clip 2 extends along the outside of the cap 1 as far as a point close to the insertion opening 4. In order that an adequate airway is guaranteed between the edge of the insertion opening 4 and the free end of the retaining clip 2, the spacing m of the free axial end of the retaining clip 2 from the insertion opening 4 should amount to less than 2 mm.
- the reference numeral 5 relates to the inside of the cap, which when the writing part 9 is inserted, is sealed with respect to the atmosphere by a peripheral region of the writing instrument 8.
- the reference numerals 13 relate to web-like areas, which are formed by the perforation 3 provided in the base attachment region 12 of the retaining clip 2 and which connect the retaining clip 2 resiliently to the cap.
- the cap 1 with the inserted writing instrument 8 can be clipped to an article of clothing by means of the retaining clip 2.
- the perforation 3 in the base attachment region 12 and the gap 6 between the retaining clip 2 and outer surface of the cap 1 form an airway, so that the air passage necessary for the child to breathe is ensured and the danger of asphyxiation does not exist. Furthermore, since the retaining clip extends close up to the insertion opening 4 of the cap, even close to this end of the cap, the airway is not closed by the windpipe. Since the retaining clip is held resiliently by the connecting webs 13, even in the case of contact of the tip of the retaining clip 2 with the gullet or windpipe, the danger of asphyxiation is substantially reduced.
- the reference numeral 7 relates to a projection, which keeps the retaining clip at a suitable distance from the surface of the cap 1.
- the second embodiment of the invention is illustrated in Figures 5 to 8.
- the difference from the embodiment according to Figures 1 to 4 consists in that the retaining clip 2 is attached by way of a radial base attachment region 12 to the top of the cap 1.
- the retaining clip 2 extends along the cap 1.
- an axial perforation 3 Provided in the attachment base region 12 of the retaining clip 2 is an axial perforation 3, which is in axial alignment with the gap 6 between the retaining clip 2 and outer side of the cap, so that an airway is formed, which extends as far as the insertion opening 4 of the cap 1.
- resilient connecting webs 13 are formed in the base attachment region 12 of the retaining clip 2 on both sides of the perforation 3, which connecting webs facilitate clipping of the cap to air article of clothing and at the same time alleviate the danger of injury to the windpipe, if the cap is accidentally swallowed.
- the third embodiment of the invention is illustrated in Figures 9 to 12.
- This embodiment differs from the embodiment according to Figures 5 to 8 substantially solely in that between the gap 6 and the perforation 3 in the base attachment region 12, an enlarged air space 14 is provided at the top of the cap 1.
- the perforation 3 can consequently be offset somewhat radially with respect to the gap 6.
- the resilient connecting webs 13 are provided in the base region 12 at the sides of the perforation 3.
Landscapes
- Clips For Writing Implements (AREA)
- Coating Apparatus (AREA)
- Pens And Brushes (AREA)
Description
- The invention relates generally to an improvement to caps for writing instruments containing ink and in particular to a cap with a safety ventilation device in order to facilitate an air flow along the cap, if the latter has lodged in a person's windpipe, for example of a child, when swallowed accidentally.
- In writing instruments which contain no ink, such as pencils and the like, hitherto in order to prevent asphyxiation as a result of accidental swallowing, an opening may be provided in the top of the cap covering the point of the pencil, so that if the cap has lodged in a child's windpipe, air for breathing may continue to flow through the cap, until medical assistance is given (see for example JP-A-39592/1986 and 118038/1977). A transfer of this principle to a cap for writing instruments containing ink, in which an evaporation of the ink must be prevented and the writing tip must be kept continuously moist, is not readily possible, since due to this the function of the writing instrument is jeopardised. In caps which serve to seal the writing tip of writing instruments containing ink with respect to atmospheric air, the risk of asphyxiation therefore exists in the case of accidental swallowing, such as is to be feared in particular with children. Inter alia this risk has been expressed in a specification of the "British Standard Institution", which is under preparation and dated June 23rd 1989, document No. 89/38201.
- It has already been proposed (see EP-A-0204252, JP-A-11016/1986), to provide an airway in the cap, which however is sealed hermetically when the cap is fitted to the writing instrument. It is typical of this type of safety caps that one or more perforations are provided at one or more axial or peripheral portions of the cap wall, which perforations thus facilitate an exchange of air between the outside and inside of the cap. One drawback of this solution is the complicated arrangement for achieving a sufficiently tight encapsulation of the tip of the writing instrument, when the cap is fitted. It is also known (DE-A-3728896), to provide a separate tubular air passage with open axial ends and a cross-section closed peripherally all round, on the outside of the cap, in order to separate the safety function from the sealing function. This solution is not solely disadvantageous as regards the manufacturing difficulties connected therewith, but in addition conceals the risk that in the course of time the air passage is easily blocked by foreign bodies which have penetrated, such as food residues, dirt deposits and the like and therefore the safety function can be lost. According to EP-A-395 797 which falls under Art. 54(3)EPC the ventilation path can be formed by a pair of axial ribs on the outside of the cap, which are in a distance from each other which is greater than the diameter of the cap body. From EP-A-319 311 a safety cap is known which has also an axially extending ventilation path on the outside of the cap underneath a clip which is connected to the cap in a rigid, non-resilient manner.
- It is an object of the present invention to provide an improved safety cap having a simple construction, which prevents drying up of the writing part of writing instruments containing ink in an effective manner, and has improved safety properties to guarantee with a minimum risk of injuries of a person who swallowed the cap, sufficient air for breathing to flow along the cap.
- According to the invention this problem is solved by a cap for a writing instrument containing ink, having safety ventilation means enabling an air flow along the cap, if the cap has lodged in a person's windpipe when swallowed accidentally, said cap being closed on all sides with the exception of an insertion end, said safety ventilation means comprising at least one axial ventilation path on the outside of the cap, which along at least part of its axial extension has an open cross-sectional configuration, whereby when a covering is placed around the cap, a cross-sectionl area for ventilation in each radial plane is defined having a throughflow capacity corresponding to the air requirement of a person, said ventilation path comprising a space between a substantially plate-like retaining clip and the outer surface of the cap, said retaining clip being attached adjacent the closed axial end to the cap, in which the spring deflection of said clip being limited by a stop for maintaining a minimum spacing with respect to the cap, said clip in its base portion has a perforation aligned substantially axially to and communicating with said space between the retaining clip and the outer surface of the cap, in which a pair of web-like portions formed by said perforation in the base portion of the retaining clip resiliently connecting the clip to the cap.
- If a cap of this structure is swallowed in a position with the open insertion end ahead the clip may spread which effectively prevents the cap from further movement in the windpipe. The resilient connecting webs in the base portion also contribute to preventing injuries to the windpipe or gullet.
- A feature of the caps according to the present invention is the high sealing function resulting from the fact that the caps are closed on all sides, i.e. there are no perforations leading into the inside of the caps. The caps therefore corresponds in their sealing function to conventional caps used in writing instruments without a safety ventilation device. Existing caps can therefore readily be replaced by safety caps according to the invention. The construction of the safety ventilation device according to the invention has advantages both as regards manufacturing techniques, since it is not necessary to form any cavities which are not easily accessible, as well as an improved safety function, in that the portions of the caps, which are critical, can readily be checked at a glance as regards their functional state. A further advantage is the relatively high freedom as regards the design of the caps.
- The invention will be described in detail hereafter with reference to embodiments and the drawings. In the drawings, identical or similar parts bear the same reference numerals.
- Figure 1 is a longitudinal sectional view of a safety cap according to a first embodiment of the invention with an associated writing intrument in fragmentary view,
- Figures 2, 3 and 4 show the safety cap according to Figure 1 in general view, plan view and view from the left,
- Figure 5 is a longitudinal sectional view of a safety cap according to a second embodiment of the invention with an associated writing instrument in fragmentary view,
- Figures 6, 7, 8 show the safety cap according to Figure 5 in general view, plan view and view from the left,
- Figure 9 is a longitudinal sectional view of a safety cap according to a third embodiment of the invention,
- Figures 10, 11, 12 show the safety cap according to Figure 9 in general view, plan view and view from the left,
- Hereafter reference will be made to Figures 1 to 12, which show the first to third embodiments of the invention.
- In Figures 1 to 4, in which the first embodiment of the invention is illustrated, the cap bears the general reference numeral 1. The cap 1 has a substantially tubular or cylindrical shape with an outer diameter of normally up to 16 mm. The cap is closed at one axial end, whereas the other axial end is provided with an insertion opening 4. The
writing part 9 of the writing instrument 8 supporting thewriting point 10 is inserted by way of the insertion opening 4. Aretaining clip 2 extending coaxially to the cap 1 is attached by itsbase region 12 to the closed top of the cap 1. As shown, thebase region 12 may be curved and contains aperforation 3 aligned substantially axially. - The airway of the present embodiment comprises the
perforation 3 and thegap 6 connected thereto between theretaining clip 2 and the outer surface of the cap 1. The airway should have a cross-sectional area of at least 3.4 mm2, preferably greater equal to 6.8 mm2, at any axial point along the cap. The retainingclip 2 extends along the outside of the cap 1 as far as a point close to the insertion opening 4. In order that an adequate airway is guaranteed between the edge of the insertion opening 4 and the free end of theretaining clip 2, the spacing m of the free axial end of the retainingclip 2 from the insertion opening 4 should amount to less than 2 mm. - The
reference numeral 5 relates to the inside of the cap, which when thewriting part 9 is inserted, is sealed with respect to the atmosphere by a peripheral region of the writing instrument 8. Thereference numerals 13 relate to web-like areas, which are formed by theperforation 3 provided in thebase attachment region 12 of theretaining clip 2 and which connect the retainingclip 2 resiliently to the cap. - The cap 1 with the inserted writing instrument 8 can be clipped to an article of clothing by means of the
retaining clip 2. - If a child accidentally swallows the aforedescribed cap 1, then even if the cap penetrates the child's windpipe and becomes lodged there, the
perforation 3 in thebase attachment region 12 and thegap 6 between theretaining clip 2 and outer surface of the cap 1 form an airway, so that the air passage necessary for the child to breathe is ensured and the danger of asphyxiation does not exist. Furthermore, since the retaining clip extends close up to the insertion opening 4 of the cap, even close to this end of the cap, the airway is not closed by the windpipe. Since the retaining clip is held resiliently by the connectingwebs 13, even in the case of contact of the tip of the retainingclip 2 with the gullet or windpipe, the danger of asphyxiation is substantially reduced. - The reference numeral 7 relates to a projection, which keeps the retaining clip at a suitable distance from the surface of the cap 1.
- The second embodiment of the invention is illustrated in Figures 5 to 8. The difference from the embodiment according to Figures 1 to 4 consists in that the
retaining clip 2 is attached by way of a radialbase attachment region 12 to the top of the cap 1. Theretaining clip 2 extends along the cap 1. Provided in theattachment base region 12 of theretaining clip 2 is anaxial perforation 3, which is in axial alignment with thegap 6 between theretaining clip 2 and outer side of the cap, so that an airway is formed, which extends as far as the insertion opening 4 of the cap 1. As in the aforementioned embodiment, resilient connectingwebs 13 are formed in thebase attachment region 12 of the retainingclip 2 on both sides of theperforation 3, which connecting webs facilitate clipping of the cap to air article of clothing and at the same time alleviate the danger of injury to the windpipe, if the cap is accidentally swallowed. Reference can be made to the aforedescribed embodiment for further details. - The third embodiment of the invention is illustrated in Figures 9 to 12. This embodiment differs from the embodiment according to Figures 5 to 8 substantially solely in that between the
gap 6 and theperforation 3 in thebase attachment region 12, an enlargedair space 14 is provided at the top of the cap 1. Theperforation 3 can consequently be offset somewhat radially with respect to thegap 6. The resilient connectingwebs 13 are provided in thebase region 12 at the sides of theperforation 3.
Claims (3)
- A cap for writing instruments containing ink, having safety ventilation means enabling an air flow along the cap, if the cap has lodged in a person's windpipe when swallowed accidentally, said cap being closed on all sides with the exception of an insertion end (4), said safety ventilation means comprising at least one axial ventilation path on the outside of the cap, which along at least part of its axial extension has an open cross-sectional configuration, whereby when a covering is placed around the cap, a cross-sectionl area for ventilation in each radial plane is defined having a throughflow capacity corresponding to the air requirement of a person, said ventilation path comprising a space (6) between a substantially plate-like retaining clip (2) and the outer surface of the cap (1), said retaining clip (2) being attached adjacent the closed axial end to the cap, in which the spring deflection of said clip being limited by a stop (7) for maintaining a minimum spacing with respect to the cap, said clip in its base portion (12) has a perforation (3) aligned substantially axially and communicating with said space (6) between the retaining clip (2) and the outer surface of the cap (1), characterized by a pair of web-like portions (13) formed by said perforation (3) in the base portion (12) of the retaining clip (2) for resiliently connecting the clip to the cap.
- A cap according to Claim 1, characterized in that the free end of the retaining clip (2) is located on or at a short distance from the insertion end (4) of the of the cap (1).
- A cap according to claim 1 or 2, characterized in that the cross-sectional area of the ventilation path at any axial position of the cap (1) is greater than or equal to 3.4 mm2.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94113647A EP0630761B1 (en) | 1989-12-16 | 1990-03-12 | Cap for writing instruments containing ink |
EP95103513A EP0679538B1 (en) | 1989-12-16 | 1990-03-12 | Cap for writing instruments containing ink |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP324901/89 | 1989-12-16 | ||
JP1324901A JPH0825353B2 (en) | 1989-12-16 | 1989-12-16 | Writing instrument cap with built-in ink |
JP1325960A JP2539275B2 (en) | 1989-12-18 | 1989-12-18 | Ink built-in writing instrument cap |
JP1989144989U JP2512711Y2 (en) | 1989-12-18 | 1989-12-18 | Writing instrument cap with built-in ink |
JP144989/89 | 1989-12-18 | ||
JP325960/89 | 1989-12-18 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94113647.5 Division-Into | 1990-03-12 | ||
EP95103513.8 Division-Into | 1990-03-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0433532A1 EP0433532A1 (en) | 1991-06-26 |
EP0433532B1 true EP0433532B1 (en) | 1996-07-03 |
Family
ID=27318920
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94113647A Expired - Lifetime EP0630761B1 (en) | 1989-12-16 | 1990-03-12 | Cap for writing instruments containing ink |
EP95103513A Expired - Lifetime EP0679538B1 (en) | 1989-12-16 | 1990-03-12 | Cap for writing instruments containing ink |
EP19900104659 Expired - Lifetime EP0433532B1 (en) | 1989-12-16 | 1990-03-12 | Cap for writing instruments containing ink |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94113647A Expired - Lifetime EP0630761B1 (en) | 1989-12-16 | 1990-03-12 | Cap for writing instruments containing ink |
EP95103513A Expired - Lifetime EP0679538B1 (en) | 1989-12-16 | 1990-03-12 | Cap for writing instruments containing ink |
Country Status (3)
Country | Link |
---|---|
EP (3) | EP0630761B1 (en) |
DE (3) | DE69031741T2 (en) |
ES (3) | ES2111222T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR930008091Y1 (en) * | 1990-10-17 | 1993-12-08 | 가부시끼가이샤 돔보 엔삐쯔 | Safety pen cap |
DE9115124U1 (en) * | 1991-12-05 | 1992-04-02 | Pelikan Ag, 3000 Hannover | Cap for a writing instrument |
US5316402A (en) * | 1991-12-13 | 1994-05-31 | Tombow Pencil Co., Ltd. | Penholder cap |
US5632565A (en) * | 1995-09-07 | 1997-05-27 | Colleague Iowa, Inc. | Removable cap with fluid passage |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2174374B (en) * | 1985-04-12 | 1989-04-19 | Platignum Plc | Closure cap |
GB8728410D0 (en) * | 1987-12-04 | 1988-01-13 | Ashpole D E J | Caps for writing instruments |
JPH01169386U (en) * | 1988-05-21 | 1989-11-29 | ||
DE3914290C1 (en) * | 1989-04-29 | 1991-02-14 | A. W. Faber-Castell Gmbh & Co, 8504 Stein, De | |
DE3920463C1 (en) * | 1989-06-22 | 1991-01-31 | J. S. Staedtler Gmbh & Co, 8500 Nuernberg, De | Suffocation preventer for pen cap - consists of sleeve or ring with air passage |
DE8908065U1 (en) * | 1989-07-01 | 1989-09-14 | J. S. Staedtler GmbH & Co, 8500 Nürnberg | Writing instrument cap |
-
1990
- 1990-03-12 DE DE1990631741 patent/DE69031741T2/en not_active Expired - Fee Related
- 1990-03-12 EP EP94113647A patent/EP0630761B1/en not_active Expired - Lifetime
- 1990-03-12 ES ES94113647T patent/ES2111222T3/en not_active Expired - Lifetime
- 1990-03-12 ES ES90104659T patent/ES2088912T3/en not_active Expired - Lifetime
- 1990-03-12 EP EP95103513A patent/EP0679538B1/en not_active Expired - Lifetime
- 1990-03-12 DE DE1990631182 patent/DE69031182T2/en not_active Expired - Fee Related
- 1990-03-12 ES ES95103513T patent/ES2105796T3/en not_active Expired - Lifetime
- 1990-03-12 DE DE1990627657 patent/DE69027657T2/en not_active Expired - Fee Related
- 1990-03-12 EP EP19900104659 patent/EP0433532B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0433532A1 (en) | 1991-06-26 |
DE69027657T2 (en) | 1996-10-31 |
DE69031182D1 (en) | 1997-09-04 |
DE69031182T2 (en) | 1998-01-08 |
ES2111222T3 (en) | 1998-03-01 |
EP0630761A3 (en) | 1995-02-01 |
DE69031741T2 (en) | 1998-04-09 |
EP0630761A2 (en) | 1994-12-28 |
EP0630761B1 (en) | 1997-11-19 |
EP0679538B1 (en) | 1997-07-30 |
DE69031741D1 (en) | 1998-01-02 |
DE69027657D1 (en) | 1996-08-08 |
EP0679538A1 (en) | 1995-11-02 |
ES2105796T3 (en) | 1997-10-16 |
ES2088912T3 (en) | 1996-10-01 |
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