Marking instrument with sealable diaphragm

Details Marking instrument with sealable diaphragm Marking instrument with sealable diaphragm

1995-06-14

1998-10-20

Bratile, Steven A.

Coating implements with material supply

Projectable and retractable tool

With movable closure or gate

401 99, B43K 900

Patent

active

058236970

ABSTRACT:
A marking instrument, e.g. a felt tip marker, has a retractable marking tip (4) carried by a marker unit (5) housed within the barrel, and a rolling diaphragm (10) connecting between the marker unit and barrel to form a sealed envelope around the tip (4) when the tip is retracted. Upon retraction of the tip the marker unit rotates to twist the diaphragm and close the envelope.

REFERENCES:
patent: 2957452 (1960-10-01), Brannon
patent: 3035299 (1962-05-01), Gordon et al.
patent: 3945734 (1976-03-01), Woodbridge

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