Cap for writing instruments containing ink

(19)

(11)

EP 0 630 761 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	01.02.1995 Bulletin 1995/05

(43)	Date of publication A2:
	28.12.1994 Bulletin 1994/52

(21)	Application number: 94113647.5

(22)	Date of filing: 12.03.1990

(51)	International Patent Classification (IPC)⁵: B43K 9/00

(84)	Designated Contracting States:
	CH DE ES FR GB IT LI

(30)

Priority:

16.12.1989 JP 324901/89
18.12.1989 JP 325960/89
18.12.1989 JP 144989/89

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	90104659.9 / 0433532

(71)	Applicant: TOMBOW PENCIL CO., LTD.
	Tokyo 114 (JP)

(72)	Inventors:
	Katami, Kazunori Saitama-ken 350-02 (JP) Suzuki, Kazuhiko Higashikurume-shi Tokyo 203 (JP)

(74)	Representative: Schmidt, Horst, Dr.
	H. Schmidt & B. Müller, Postfach 44 01 20 80750 München 80750 München (DE)

(56)

References cited: :


	Remarks:
	This application was filed on 31 - 08 - 1994 as a divisional application to the application mentioned under INID code 60.

(54)	Cap for writing instruments containing ink

(57) A cap for writing instruments containing ink, has a safety ventilation function in that it enables an air flow along the cap (201), if the cap has lodged in a person's windpipe when swallowed accidentally. The cap (201) is closed on all sides with the exception of its insertion end (204). At least one axial ventilation path is formed by a plurality of axial indentations or grooves (206) formed in the outer surface of the cap and spaced apart peripherally, and a substantially plate-like retaining clip (202) provided between an adjacent pair of axial indentations or grooves (206). Accordingly the ventilation path along its axial extension has an open cross-sectional configuration, whereby when a covering is placed around the cap, a cross-sectional area for ventilation in each radial plane is defined having a throughflow capacity corresponding to the air requirement of a person.

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