Pen point for writing instruments

Details Pen point for writing instruments Pen point for writing instruments

1974-11-29

1976-01-13

Charles, Lawrence

Coating implements with material supply

Including tool with blade-like, pad-like, or apertured...

Apertured tool

401292, B43K 106

Patent

active

039320448

ABSTRACT:
Pen point for writing instrument comprising a cylindrical article composed of united thermoplastic synthetic resin monofilaments, said cylindrical article being provided with an even number of more than 4 of radial curved narrow slots having capillary action and extending toward the center of the cylindrical article from the inside of the outer periphery, which are confined by triangular projected segments, top of which segment is circular and side walls of said radial curved narrow slot being formed by a plurality of semicircles, which are arranged so that the semicircles in the opposite side walls are engaged with each other under writing pressure.

REFERENCES:
patent: 3510227 (1970-05-01), Horie
patent: 3520629 (1970-07-01), Otsuka
patent: 3718401 (1973-02-01), Kiriu
patent: 3778495 (1973-12-01), Wooley
patent: 3830576 (1974-08-01), Koh No et al.

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