Ink chamber pressure enhancing control

Details Ink chamber pressure enhancing control Ink chamber pressure enhancing control

1999-03-30

2000-08-15

Recla, Henry J.

Coating implements with material supply

Including means to apply material-moving force

By compression or suction of gas in reservoir

401188A, B43K 502

Patent

active

061026018

ABSTRACT:
An ink chamber pressure enhancing control device, which includes a valve block mounted in the barrel of a writing instrument above an ink chamber, a cap axially movably mounted in the valve block above a valve port in the valve block, the cap having an air inlet, a piston supported on a spring member above the ink chamber in the barrel, wherein the piston is forced upwards by the spring member to close the valve port, enabling an air chamber to be formed within the cap and the valve block above the valve port, and from the air inlet at the cap and the valve port is forced into the ink chamber in the writing instrument when the cap is depressed.

REFERENCES:
patent: 1319556 (1919-10-01), Baker
patent: 2787249 (1957-04-01), Barlow et al.
patent: 3115868 (1963-12-01), De Molin et al.
patent: 5738458 (1998-04-01), Smith

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