Writing instrument with retractable tip

Details Writing instrument with retractable tip Writing instrument with retractable tip

1979-06-25

1981-05-26

Pieprz, William

Coating implements with material supply

Projectable and retractable tool

With movable closure or gate

B43K 2400

Patent

active

042695252

ABSTRACT:
A flexible shield comprising a piece of flexible material shaped to fit into and be attached to the interior of the barrel of a retractable tip pen in proximity to the tip and having a central aperture which may comprise cross slits whose edges are adapted to move away from each other to expand the aperture when the tip is emitting from the barrel and to return to normal substantially closed position over the tip when the tip is retracted into the barrel to perform the dual function of inhibiting the passage of air to dry out the tip and to wipe the tip free of accumulated liquid build-up or dust.

REFERENCES:
patent: 2405958 (1946-08-01), Kelley
patent: 2559906 (1951-07-01), Tursky
patent: 2952242 (1960-09-01), Rosso
patent: 3203403 (1965-08-01), Yanagita
patent: 3362778 (1968-01-01), Pavese
patent: 3399946 (1968-09-01), Tokorozawa et al.
patent: 3525573 (1970-08-01), Fend
patent: 3594091 (1971-07-01), Bleuer
patent: 3637316 (1972-01-01), Bross
patent: 3945734 (1976-03-01), Woodbridge

Affiliated with

Also associated with

Rating

Writing instrument with retractable tip does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Writing instrument with retractable tip, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Writing instrument with retractable tip will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-451605