Valve unit for writing instruments or liquid applicators

Details Valve unit for writing instruments or liquid applicators Valve unit for writing instruments or liquid applicators

1990-12-28

1991-11-26

DeMille, Danton D.

Coating implements with material supply

Material flows through porous tool

With flow-regulator

401148, 401273, 401264, 401180, B43K 500, B43K 518, A46B 1104

Patent

active

050678388

ABSTRACT:
A valve unit for liquid applicators for applying liquid to articles, includes a spring support provided with a front and a rear openings, in an inner surface of which front opening is provided an annular projection serving as a sealing means; a valve seat provided with a cylindrical portion, and a seat portion; a valve stem provided with an edged piston portion brought into a slidable close contact with the cylindrical portion of the valve seat, the valve stem being seated on the valve seat at a front surface of the edged piston portion thereof; and a valve spring so resiliently urging the valve stem as to seat valve stem on the valve seat to close said valve unit.

REFERENCES:
patent: 1857467 (1932-05-01), Marsh
patent: 2516542 (1950-07-01), Blackman
patent: 2788925 (1954-08-01), Ward
patent: 3468611 (1969-09-01), Ward
patent: 3655290 (1972-04-01), Griffith
patent: 4033700 (1977-07-01), Spatz
patent: 4496258 (1985-01-01), Tanaka et al.
patent: 4773785 (1988-09-01), Katz

Affiliated with

Also associated with

Rating

Valve unit for writing instruments or liquid applicators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve unit for writing instruments or liquid applicators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve unit for writing instruments or liquid applicators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2384057