WO1992002374A1 - Capuchon de plume d'ecriture - Google Patents

Capuchon de plume d'ecriture Download PDF

Info

Publication number
WO1992002374A1
WO1992002374A1 PCT/US1991/005424 US9105424W WO9202374A1 WO 1992002374 A1 WO1992002374 A1 WO 1992002374A1 US 9105424 W US9105424 W US 9105424W WO 9202374 A1 WO9202374 A1 WO 9202374A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
core
pen
insert
pen cap
Prior art date
Application number
PCT/US1991/005424
Other languages
English (en)
Inventor
Robert White
Original Assignee
The Gillette Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by The Gillette Company filed Critical The Gillette Company
Publication of WO1992002374A1 publication Critical patent/WO1992002374A1/fr

Links

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

Definitions

  • PE CAP This invention is concerned with writing instruments, and in particular relates to pen caps. It is usual to provide a pen with a retraction mechanism to enable the writing point to be withdrawn into the pen barrel when the pen is not being used, or to provide a detachable cap for covering the writing tip when the pen is not in use. Some pens require the writing point to be enclosed within a sealed space to prevent the ink stored within the pen drying out due to evaporation, and a removable cap is generally employed to define this space. The caps perform this function very well, but it is considered that detachable pen caps can be hazardous to children who may put the caps into their mouths.
  • an integral pen cap having a tubular main part for receiving a forward end portion of the pen barrel, and a hollow stem attached to one end of the main part by radial fins which also extend the length of the hollow stem.
  • the fins form external flutes for defining air passages while the hollow stem defines an enclosure for sealing around the writing tip when the cap is fitted to the pen.
  • the effectiveness of external flutes, and other possible methods of defining an air passage along the outside of a cap is very uncertain due to the unpredictable effects of tissue swelling in the trachea.
  • Another drawback of this cap is that it is only suitable for pens with a small diameter at the tip, otherwise the cap needs to be of large diameter.
  • the present invention has for its aim to provide a pen cap of simple and economic manufacture which will ensure in reliable manner an effective passage for air through the interstices of the cap when the cap is detached from a pen.
  • a pen cap comprising a tubular casing having an open forward end for receiving a front end portion of a pen, inwardly projecting abutment means at the rear end of the casing, and a rearwardly facing abutment shoulder spaced axially from the rear end of the casing, and an insert accommodated in the casing and providing a cup- shaped core to define a sealed enclosure around the writing point of the pen, an air passage being defined between the core and the casing along the length of the core, and a projection on the core engaged with said abutment shoulder whereby the insert is held against axial movement by engagement between said inwardly projecting abutment means and said abutment shoulder.
  • the casing has at the rear end thereof an inturned circumferential lip and a longitudinally extending slot.
  • a lateral projection on the core of the insert engages in the slot of the casing to limit forward movement of the insert and the insert is held against rearward movement by abutment with the lip.
  • a pen cap embodying the invention can be assembled easily from two injection moulded plastics parts, namely the casing and the insert, by pushing
  • the insert is conveniently formed with longitudinal spines or ribs distributed around the core to position the core centrally in the casing and define a plurality of air passages between the casing and 10 insert.
  • the ribs can be arranged to abut the casing lip to secure the insert within the casing.
  • Figure 1 is a longitudinal section through a 20 pen cap constructed in accordance with the invention
  • Figure 2 is a rear end elevation of the pen cap shown in Figure 1;
  • Figure 3 is a transverse cross-section taken along the line III-III in Figure 1; 25 Figure 4 is a rear end view of the cap insert; and
  • Figure 5 is a rear end view of the cap casing.
  • the cap illustrated in the drawings is assembled from two parts, namely a casing 1 and an 30 insert 2 , each made as an injection moulding.
  • the casing is tubular with a through bore, and at its rear end is formed with a small inturned flange or lip 3 and a longitudinally extending slot 4.
  • On its interior the casing is provided with pips 5 intended to cooperate 35 with a groove in the pen barrel to retain the cap on the pen, and on its exterior the casing is formed with a projection 6 for cooperation with the pocket clip of the pen cap as described below.
  • the insert 2 comprises a generally cup-shaped core having a cylindrical open end section 8 and a frusto-conical closed end section 9. Integral with the core and uniformly distributed thereabout are longitudinal ribs 10, the ribs being four in number in the exemplary embodiment.
  • the ribs engage the inner surface of the casing and support the core coaxially within the casing so that longitudinal passages 11 for flow of air are defined between the insert and the casing intermediate adjacent ribs.
  • As the rear end of the core is tapered there are ensured large air openings 12 at the rear of the cap, and the flow of air through the passages is not restricted by the lip 3 of the casing.
  • the rear ends of the ribs (except the rib aligned with the casing slot 4) abut the lip 3 to retain the insert securely within the casing.
  • the insert includes an integral pocket clip 14 which extends parallel to the casing to a forward end located adjacent the projection 6 for gripping a piece of cloth, in particular the edge of a pocket, between the clip and the casing.
  • the clip is attached to the frusto-conical section of the core by an arm formed by a pair of parallel lugs 16 which project laterally from the core and through the slot 4 of the casing. The lugs abut against the shoulder defined by the front edge of the slot 4 to limit the forward displacement of the insert 2.
  • the hole 17 defined between the lugs 16 at the rear end of the cap can help provide an additional flow way for air which may pass along the cap between the pocket clip 14 and the casing 1.
  • the insert is merely pushed into the rear end of the casing with the clip arm aligned with the slot 4, until the arm engages the forward end of the slot and the ribs 10 snap behind the lip 3.
  • the forward ends of the ribs 10 are tapered to facilitate insertion of the insert 2 into the casing.
  • the pen cap of the invention is simple to manufacture and assemble, and is effective in use while still meeting with safety demands.
  • the casing can be made of a substantially rigid material whereas the insert is made of more resilient material to ensure the clip 14 has the required resilience, to facilitate insertion of the insert into the casing and to form a good seal about the writing tip.
  • the insert occupies only a minor part of the length of the casing, which means the cap can be used with pens having barrels of relatively large diameter without requiring the cap to be exceptionally large.
  • the lip does not need to be a continuous flange and individual inturned projections for cooperation with the respective ribs would be adequate.

Landscapes

  • Clips For Writing Implements (AREA)

Abstract

Un capuchon d'une plume consiste en un boîtier tubulaire (1) ayant un rebord (3) tourné vers l'intérieur et une fente longitudinale (4) à son extrémité arrière, et un insert (2) introduit dans le boîtier de sorte qu'un bras portant une attache solidaire (14) de fixation à une poche d'un vêtement s'engage dans la fente et que des nervures longitudinales (10) formées sur l'extérieur d'un noyau en forme de godet viennent buter contre la lèvre (3). Le noyau de l'insert est adapté pour définir une enceinte fermée scellée autour de la pointe d'écriture de la plume. Les nervures (10) espacent le noyau du boîtier pour définir des passages (11) permettant à de l'air de s'écouler au travers du capuchon lorsqu'il n'est pas adapté sur la plume, dans le cas où il serait avaler accidentellement par un enfant.
PCT/US1991/005424 1990-08-09 1991-07-31 Capuchon de plume d'ecriture WO1992002374A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9017530A GB2246744B (en) 1990-08-09 1990-08-09 Pen caps
GB9017530.8 1990-08-09

Publications (1)

Publication Number Publication Date
WO1992002374A1 true WO1992002374A1 (fr) 1992-02-20

Family

ID=10680440

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/005424 WO1992002374A1 (fr) 1990-08-09 1991-07-31 Capuchon de plume d'ecriture

Country Status (2)

Country Link
GB (1) GB2246744B (fr)
WO (1) WO1992002374A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230578A (en) * 1991-11-13 1993-07-27 Bic Corporation Cap for writing and marking instruments
JP2595554Y2 (ja) * 1993-07-28 1999-05-31 オート株式会社 筆記具用安全キャップ
CN104596726B (zh) * 2014-12-02 2017-04-12 温州市质量技术监督检测院 一种笔帽和端盖空气流通检测装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844642A (en) * 1985-05-27 1989-07-04 Pilot Ink Co., Ltd. Cap for writing equipment
WO1989011978A1 (fr) * 1988-05-31 1989-12-14 J.S. Staedtler Gmbh & Co. Capuchon pour instruments d'ecriture
GB2220199A (en) * 1988-06-23 1990-01-04 Schwan Stabilo Schwanhaeusser Protective cap for applicator element
GB2229967A (en) * 1989-03-30 1990-10-10 Gillette Co Safety pen cap
EP0394609A1 (fr) * 1989-04-28 1990-10-31 DOBELL S.p.A. Capuchon monolithique pour instruments à écrire pourvu de deux groupes de passages à air vers l'extérieur
US4969766A (en) * 1989-02-15 1990-11-13 Binney & Smith, Inc. Cap for marking instruments
US4979840A (en) * 1988-12-07 1990-12-25 Pelikan Aktiengesellschaft Fountain pen with correction-cartridge receiver
US5000603A (en) * 1989-06-15 1991-03-19 Mitsubishi Pencil Co., Ltd. Removable cap of writing instrument

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844642A (en) * 1985-05-27 1989-07-04 Pilot Ink Co., Ltd. Cap for writing equipment
WO1989011978A1 (fr) * 1988-05-31 1989-12-14 J.S. Staedtler Gmbh & Co. Capuchon pour instruments d'ecriture
GB2220199A (en) * 1988-06-23 1990-01-04 Schwan Stabilo Schwanhaeusser Protective cap for applicator element
US4979840A (en) * 1988-12-07 1990-12-25 Pelikan Aktiengesellschaft Fountain pen with correction-cartridge receiver
US4969766A (en) * 1989-02-15 1990-11-13 Binney & Smith, Inc. Cap for marking instruments
GB2229967A (en) * 1989-03-30 1990-10-10 Gillette Co Safety pen cap
EP0394609A1 (fr) * 1989-04-28 1990-10-31 DOBELL S.p.A. Capuchon monolithique pour instruments à écrire pourvu de deux groupes de passages à air vers l'extérieur
US5000603A (en) * 1989-06-15 1991-03-19 Mitsubishi Pencil Co., Ltd. Removable cap of writing instrument

Also Published As

Publication number Publication date
GB9017530D0 (en) 1990-09-26
GB2246744A (en) 1992-02-12
GB2246744B (en) 1993-08-04

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