Marker pen

Details Marker pen Marker pen

1993-11-15

1999-06-08

Bratlie, Steven A.

Coating implements with material supply

Including means to apply material-moving force

By compression or suction of gas in reservoir

401183, 401184, 401199, 401188R, B43K 802, B43K 804

Patent

active

059099780

ABSTRACT:
In a marking pen, the body of the marking pen containing the cartridge is made air tight except for the opening on the distal end to receive the marker nib and a vent hole. The walls of the pen body are made flexible and the vent hole is provided through the flexible walls near the distal end so that the cavity containing the cartridge can be pressurized by squeezing the body between the thumb and index finger, with the index finger covering the vent hole. The pressuring of the cartridge cavity applies hydraulic pressure to the nib to flush the nib with ink or unclog it.

REFERENCES:
patent: 550763 (1895-12-01), Osmun
patent: 1271457 (1918-07-01), Gaines
patent: 2820233 (1958-01-01), Steiner
patent: 3231924 (1966-02-01), Lofgren
patent: 3457014 (1969-07-01), Ward
patent: 3481677 (1969-12-01), Abrahamson
patent: 3777949 (1973-12-01), Chiquiari-Arias
patent: 3781122 (1973-12-01), Chesseman
patent: 3905709 (1975-09-01), Bok
patent: 3947136 (1976-03-01), Adams
patent: 3949871 (1976-04-01), Christensen et al.
patent: 4526490 (1985-07-01), Welsh
patent: 4568214 (1986-02-01), Abe et al.
patent: 4732504 (1988-03-01), Telli

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