EP0481479A1 - Safety pen cap - Google Patents
Safety pen cap Download PDFInfo
- Publication number
- EP0481479A1 EP0481479A1 EP91117739A EP91117739A EP0481479A1 EP 0481479 A1 EP0481479 A1 EP 0481479A1 EP 91117739 A EP91117739 A EP 91117739A EP 91117739 A EP91117739 A EP 91117739A EP 0481479 A1 EP0481479 A1 EP 0481479A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cap
- cap body
- rib
- safety pen
- pen
- 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.)
- Granted
Links
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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
-
- 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
Definitions
- the invention relates to a safety pen cap, i.e. a cap for a writing instrument, which is adaped to avoid suffocation in case the cap is accidentally swallowed and lodged in a person's windpipe.
- caps exist (DE 3817248 C1, GB 2233607, JP 1-139595 U, JP 1-169385 U) which prevent evaporation of the ink of the pen by covering its pointed end in an air-tight manner when the pen is not in use.
- the cap comprises an outer cylindrical portion disposed around an inner cylindrical cap-like portion by which a space is formed between the inner and outer portions, which enables an air flow in the longitudinal direction of the cap.
- complicate molds are generally necessary for forming these caps which therefore are comparatively expensive.
- the space between the outer and inner portions can easily be clogged by foreign material.
- the invention serves to essentially avoid the drawbacks of the known safety pen caps.
- the invention is an improvement of a cap of a type which is known from applicant's EP 433532 A1.
- An object of the invention therefore is to provide a safety pen cap which can easily be easily formed in an integral manner with low cost, and in spite of a satisfactory air-tightening function is suitable to prevent in a reliable manner suffocation in case the cap is swallowed.
- the cap according to the invention comprises a cap body with closed and open axial ends, and further including at least one groove extending on the outer circumference of the cap body in the axial direction from the edge at the closed end towards an intermediate position of the cap body, and at least one rib projecting from the cap body and axially extending from a position near above the intermediate end of said groove up to the edge at the open end of the cap body.
- the cap can be formed in an integral manner by using a metallic mold having a simple design. Even if the cap is accidentally swallowed, an air passage is left to allow flow of air along the axial direction of the cap in all situations, since the cap comprises one or more grooves and ribs in which one end of each rib is extended on the grooves while the other end of the rib terminates at the open end edge of the cap. Further since a connecting or supporting web of the rib is disposed at a location away from a sealing part of the cap , the sealing or tightening part will not be affected during the formation of the cap by an incomplete formation of the rib, threreby the air-tightening function of the cap is perfectly assured.
- reference number 1 indicates a cap body having axial ends, namely an open end 2 and an opposite closed end.
- a top portion of a pen (see fig. 10) can be inserted from the open end 2 into the cap to cover the pointed end of the pen in an air-tight manner.
- Reference number 3 indicates a pair of ribs radially projecting from the outer circumference of the cap body 1 on diametral portions thereof and each extending from an intermediate position of the cap body 1 to the open end 2 thereof in the longitudinal direction. While a pair of ribs 3 is shown, also less or more than two ribs 3 could be provided.
- each rib 3 remote from the open end 2 of the cap extends on a pair of spaced parallel grooves 4 which are provided in the cap body 1 and extend in the longitudinal direction from the closed end of the cap up to nearly a location halfway the length of the cap.
- Reference number 5 indicates a surface of the cap body between the grooves 4.
- the first embodiment Since the first embodiment is constructed as mentioned above, it can be easily formed in an integral manner by means of an uncomplicated metallic mold. In case the cap is accidentally swallowed, in connection with the windpipe of a person an air passage extending in the axial direction of the cap is formed by the grooves 4 and the ribs 3. By proper dimensioning the grooves and ribs a sufficient cross section of the air passage to avoid suffocation can be assured.
- the ends of the grooves 4 of the pen according to the first embodiment are communicated with a circular groove 4' provided in the cap body 1 at about a central portion thereof, i.e. a portion of the pen into which either of the grooves 4 and ribs 3 extend.
- a circular groove 4' provided in the cap body 1 at about a central portion thereof, i.e. a portion of the pen into which either of the grooves 4 and ribs 3 extend.
- Other details of this embodiment correspond to that of the first embodiment.
- the second embodiment assures an air flow along the surface of the cap body 1 even if one or more of the longitudinal grooves 4 should become clogged in that the air can still flow from an open groove 4 along the circular groove 4' to the space beneath the ribs 3.
- Fig. 8 to 13 show a third embodiment of the invention.
- a cap body 1 On a cap body 1 a number of thin, rib-like partition walls or fins 5 is integrally formed between which comparatively long longitudinal grooves 4 are defined.
- the dimensions of the web portion 8 in the circumferential and longitudinal directions is less than that of the rib 3.
- a space is left between the underside of the rib and the surface of the cap body 1.
- the rib 3 extends along the cylindrical cap portion 6 from nearly the open end 2 of the cap body 1 to a position above the inner ends of the grooves 4.
- Reference number 7 indicates circumferentially spaced protrusions on the inner surface of the cylindrical cap portion 6 to engage an outer portion of a pen when it is inserted into the cap for aligning and sealing its pointed end (see fig. 10).
- Fig. 11 is a modification of the preceding embodiment in that the web-like connecting portion 8 is dislocated to a location near the partition walls 5. Further the axial positions of the protrusions 7 and an annular bead adadpted to engage an annular recess of the pen are interchanged, namely the annular bead 6 is disposed near the open end 2 of the cap while it is provided near the grooved portion of the cap in the embodiment according to fig. 8 to 10.
- Fig. 12 and 13 are cross-sectional views of different typs of arrangements of the rib-like partition walls 5.
- Fig. 12 shows an arrangement where a number of partition walls 5 is equally spaced along the circumference of the cap body 1.
- Fig. 13 shows an arrangement where a pair of partition walls 5 is provided on diametral portions of the cap body 1.
- Reference number 4 indicates the grooves defined between the rib-like partition walls 5.
- a cap according to the third embodiment can easily be formed by moving a metallic mold to the right and left side from the dotted line of fig. 8, thereby the metallic mold can have a simple design.
- the rib 3 is connected with the cap body 1 by means of a connecting portion 8 which is disposed on the outside at a suitable distance from the sealing protrusion 6 on the inside of the cap, thereby the air-tight or sealing effect of this part cannot be affected by defects as a result of an incomplete formation of the rib 3 during molding.
- the cap according to the embodiments shown in fig. 8 to 13 further prevents suffocation in case the cap is accidentally swallowed in a reliable manner.
- the invention enables the formation of caps in an integral and easy manner, avoids defects at the air-tightening part caused by incomplete formations, lowers the cost, and enables to make a plan on the length of a groove and a rib respectively and at one's will thus allows a plan with wide possibilities. Further it has outstanding effects on preventing suffocation caused by swallowing the cap accidentally.
Landscapes
- Coating Apparatus (AREA)
- Jib Cranes (AREA)
- Pens And Brushes (AREA)
Abstract
Description
- The invention relates to a safety pen cap, i.e. a cap for a writing instrument, which is adaped to avoid suffocation in case the cap is accidentally swallowed and lodged in a person's windpipe.
- So far caps exist (DE 3817248 C1, GB 2233607, JP 1-139595 U, JP 1-169385 U) which prevent evaporation of the ink of the pen by covering its pointed end in an air-tight manner when the pen is not in use. To assure a ventilation in case the cap is accidentally swallowed, the cap comprises an outer cylindrical portion disposed around an inner cylindrical cap-like portion by which a space is formed between the inner and outer portions, which enables an air flow in the longitudinal direction of the cap. However, complicate molds are generally necessary for forming these caps which therefore are comparatively expensive. Moreover the space between the outer and inner portions can easily be clogged by foreign material. There has also been proposed a cap (EP 330877 A2) having a number of vertical grooves provided side by side in the outer circumference and connected at its inner ends to an inside portion of the cap thus providing a ventilation path in the longitudinal direction of the cap which entends partly outside and partly inside the cap. An air passage of this type causes significant restrictions as to the use of the cap as well as to its production and design. In addition there are disadvantages with regard of the function of the cap to prevent evaporation of the ink of the pen.
- The invention serves to essentially avoid the drawbacks of the known safety pen caps. In particular the invention is an improvement of a cap of a type which is known from applicant's EP 433532 A1.
- An object of the invention therefore is to provide a safety pen cap which can easily be easily formed in an integral manner with low cost, and in spite of a satisfactory air-tightening function is suitable to prevent in a reliable manner suffocation in case the cap is swallowed.
- The cap according to the invention comprises a cap body with closed and open axial ends, and further including at least one groove extending on the outer circumference of the cap body in the axial direction from the edge at the closed end towards an intermediate position of the cap body, and at least one rib projecting from the cap body and axially extending from a position near above the intermediate end of said groove up to the edge at the open end of the cap body.
- The cap can be formed in an integral manner by using a metallic mold having a simple design. Even if the cap is accidentally swallowed, an air passage is left to allow flow of air along the axial direction of the cap in all situations, since the cap comprises one or more grooves and ribs in which one end of each rib is extended on the grooves while the other end of the rib terminates at the open end edge of the cap. Further since a connecting or supporting web of the rib is disposed at a location away from a sealing part of the cap , the sealing or tightening part will not be affected during the formation of the cap by an incomplete formation of the rib, threreby the air-tightening function of the cap is perfectly assured.
- The invention will now be described in detail hereafter with reference to the drawings, in which
- Fig. 1 shows a first embodiment of the invention,
- Fig. 2 is a right side view,
- Fig. 3 is a left side view,
- Fig. 4 is a cross-sectional view in the direction A-A of fig. 1,
- Fig. 5 shows a second embodiment of the invention,
- Fig. 6 is a right side view,
- Fig. 7 is a left side view,
- Fig. 8 shows a third embodiment of the invention,
- Fig. 9 is a sectionial view in the longitudinal direction,
- Fig. 10 is view similar to Fig. 9 with a pen inserted in the cap,
- Fig. 11 is a sectionial view in the longitudinal direction of a modification of the third embodiment,
- Fig. 12 is a fragmentary cross-sectional view showing a preferred arrangement of rib-like partition walls , and
- Fig. 13 is a fragmentary cross-sectional view showing another arrangement of rib-like partition walls.
- In the drawings same reference numbers are used throughout to indicate same or similar parts.
- In the embodiment according to Fig. 1 to 4
reference number 1 indicates a cap body having axial ends, namely anopen end 2 and an opposite closed end. A top portion of a pen (see fig. 10) can be inserted from theopen end 2 into the cap to cover the pointed end of the pen in an air-tight manner.Reference number 3 indicates a pair of ribs radially projecting from the outer circumference of thecap body 1 on diametral portions thereof and each extending from an intermediate position of thecap body 1 to theopen end 2 thereof in the longitudinal direction. While a pair ofribs 3 is shown, also less or more than tworibs 3 could be provided. The end of eachrib 3 remote from theopen end 2 of the cap extends on a pair of spacedparallel grooves 4 which are provided in thecap body 1 and extend in the longitudinal direction from the closed end of the cap up to nearly a location halfway the length of the cap.Reference number 5 indicates a surface of the cap body between thegrooves 4. - Since the first embodiment is constructed as mentioned above, it can be easily formed in an integral manner by means of an uncomplicated metallic mold. In case the cap is accidentally swallowed, in connection with the windpipe of a person an air passage extending in the axial direction of the cap is formed by the
grooves 4 and theribs 3. By proper dimensioning the grooves and ribs a sufficient cross section of the air passage to avoid suffocation can be assured. - In the embodiment of the invention according to fig. 5 to 7 the ends of the
grooves 4 of the pen according to the first embodiment are communicated with a circular groove 4' provided in thecap body 1 at about a central portion thereof, i.e. a portion of the pen into which either of thegrooves 4 andribs 3 extend. Other details of this embodiment correspond to that of the first embodiment. - The second embodiment assures an air flow along the surface of the
cap body 1 even if one or more of thelongitudinal grooves 4 should become clogged in that the air can still flow from anopen groove 4 along the circular groove 4' to the space beneath theribs 3. - Fig. 8 to 13 show a third embodiment of the invention. On a cap body 1 a number of thin, rib-like partition walls or
fins 5 is integrally formed between which comparatively longlongitudinal grooves 4 are defined. On an essentiallycylindrical sealing portion 6 of thecap body 1 disposed adjacent theopen end 2 of the cap and having an outer diameter essentially corresponding to that of the partition walls 5 a longitudinally extendingrib 3 is provided which is supported by thecap body 1 by means of a shortradial web portion 8. The dimensions of theweb portion 8 in the circumferential and longitudinal directions is less than that of therib 3. Thus a space is left between the underside of the rib and the surface of thecap body 1. Therib 3 extends along thecylindrical cap portion 6 from nearly theopen end 2 of thecap body 1 to a position above the inner ends of thegrooves 4.Reference number 7 indicates circumferentially spaced protrusions on the inner surface of thecylindrical cap portion 6 to engage an outer portion of a pen when it is inserted into the cap for aligning and sealing its pointed end (see fig. 10). - Fig. 11 is a modification of the preceding embodiment in that the web-like connecting
portion 8 is dislocated to a location near thepartition walls 5. Further the axial positions of theprotrusions 7 and an annular bead adadpted to engage an annular recess of the pen are interchanged, namely theannular bead 6 is disposed near theopen end 2 of the cap while it is provided near the grooved portion of the cap in the embodiment according to fig. 8 to 10. - Fig. 12 and 13 are cross-sectional views of different typs of arrangements of the rib-
like partition walls 5. Fig. 12 shows an arrangement where a number ofpartition walls 5 is equally spaced along the circumference of thecap body 1. Fig. 13 shows an arrangement where a pair ofpartition walls 5 is provided on diametral portions of thecap body 1.Reference number 4 indicates the grooves defined between the rib-like partition walls 5. - A cap according to the third embodiment can easily be formed by moving a metallic mold to the right and left side from the dotted line of fig. 8, thereby the metallic mold can have a simple design. Preferably, the
rib 3 is connected with thecap body 1 by means of a connectingportion 8 which is disposed on the outside at a suitable distance from the sealingprotrusion 6 on the inside of the cap, thereby the air-tight or sealing effect of this part cannot be affected by defects as a result of an incomplete formation of therib 3 during molding. Thus the air-tightening function of the cap at the pointed end of the pen is perfectly assured. The cap according to the embodiments shown in fig. 8 to 13 further prevents suffocation in case the cap is accidentally swallowed in a reliable manner. - As mentioned above, the invention enables the formation of caps in an integral and easy manner, avoids defects at the air-tightening part caused by incomplete formations, lowers the cost, and enables to make a plan on the length of a groove and a rib respectively and at one's will thus allows a plan with wide possibilities. Further it has outstanding effects on preventing suffocation caused by swallowing the cap accidentally.
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10802990 | 1990-10-17 | ||
JP108029/90 | 1990-10-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0481479A1 true EP0481479A1 (en) | 1992-04-22 |
EP0481479B1 EP0481479B1 (en) | 1995-03-22 |
Family
ID=14474157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91117739A Expired - Lifetime EP0481479B1 (en) | 1990-10-17 | 1991-10-17 | Safety pen cap |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0481479B1 (en) |
KR (1) | KR930008091Y1 (en) |
DE (1) | DE69108340T2 (en) |
ES (1) | ES2071186T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103738080A (en) * | 2013-12-25 | 2014-04-23 | 宁波江北瑞臣工艺品设计有限公司 | Child-resistant pen |
WO2017001050A1 (en) * | 2015-07-02 | 2017-01-05 | Schwan-Stabilo Cosmetics Gmbh & Co. Kg | Cap for a pen or pencil |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE906095A (en) * | 1986-12-30 | 1987-04-16 | Aermi Internat S A | Throw-away plastics pen - has profiled body and cap to give firm but removable fit |
EP0330877A2 (en) * | 1988-02-29 | 1989-09-06 | DOBELL S.p.A. | Writing instrument cap suitable to let a flow of air pass through it |
DE8907626U1 (en) * | 1989-06-22 | 1990-07-26 | J. S. Staedtler GmbH & Co, 8500 Nürnberg | Device to prevent choking on writing instrument caps |
EP0433532A1 (en) * | 1989-12-16 | 1991-06-26 | Tombow Pencil Co., Ltd. | Cap for writing instruments containing ink |
-
1991
- 1991-10-16 KR KR2019910011145U patent/KR930008091Y1/en not_active IP Right Cessation
- 1991-10-17 ES ES91117739T patent/ES2071186T3/en not_active Expired - Lifetime
- 1991-10-17 DE DE69108340T patent/DE69108340T2/en not_active Expired - Fee Related
- 1991-10-17 EP EP91117739A patent/EP0481479B1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE906095A (en) * | 1986-12-30 | 1987-04-16 | Aermi Internat S A | Throw-away plastics pen - has profiled body and cap to give firm but removable fit |
EP0330877A2 (en) * | 1988-02-29 | 1989-09-06 | DOBELL S.p.A. | Writing instrument cap suitable to let a flow of air pass through it |
DE8907626U1 (en) * | 1989-06-22 | 1990-07-26 | J. S. Staedtler GmbH & Co, 8500 Nürnberg | Device to prevent choking on writing instrument caps |
EP0433532A1 (en) * | 1989-12-16 | 1991-06-26 | Tombow Pencil Co., Ltd. | Cap for writing instruments containing ink |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103738080A (en) * | 2013-12-25 | 2014-04-23 | 宁波江北瑞臣工艺品设计有限公司 | Child-resistant pen |
CN103738080B (en) * | 2013-12-25 | 2016-04-13 | 宁波江北瑞臣工艺品设计有限公司 | Prevent the pen that child opens |
WO2017001050A1 (en) * | 2015-07-02 | 2017-01-05 | Schwan-Stabilo Cosmetics Gmbh & Co. Kg | Cap for a pen or pencil |
Also Published As
Publication number | Publication date |
---|---|
KR920007769U (en) | 1992-05-19 |
DE69108340T2 (en) | 1995-09-28 |
EP0481479B1 (en) | 1995-03-22 |
KR930008091Y1 (en) | 1993-12-08 |
ES2071186T3 (en) | 1995-06-16 |
DE69108340D1 (en) | 1995-04-27 |
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