Writing instrument

Details Writing instrument Writing instrument

1998-09-11

1999-11-23

Walczak, David J.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Combined

401 68, 401 87, 401 49, B43K 2500

Patent

active

059889144

ABSTRACT:
A writing instrument includes a tubular body, a guide sleeve, an outer sleeve, and a holder. The outer sleeve includes at least one groove on an inner surface thereof, and the guide sleeve includes at least one rib on a forward portion thereof to engage the groove of the outer sleeve. An inclined surface continuously inclining relative to the axial direction of the outer sleeve is formed at a rearward end portion of either side wall of the groove such that a width of the groove becomes wider in a direction of the rearward end. An inclined surface continuously inclining relative to the axial direction of the outer sleeve is formed at a forward end portion of either side wall of the rib such that a width of the rib becomes smaller in a direction of the forward end. An inclined angle of the inclined surface of the groove is not less than that of the inclined surface of the rib.

REFERENCES:
patent: 4904101 (1990-02-01), Petterson
patent: 5662425 (1997-09-01), Mitsuya
patent: 5683191 (1997-11-01), Kageyama et al.

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