Tubular writting pen with superposed pressure equalization chamb

Details Tubular writting pen with superposed pressure equalization chamb Tubular writting pen with superposed pressure equalization chamb

1988-12-22

1990-06-05

Bratlie, Steven A.

Coating implements with material supply

Including stylus

401135, 401251, 401225, 401259, B43K 800, B43K 518

Patent

active

049309218

ABSTRACT:
Tubular writing pens of the stylographic type, as used by artists and technical draftsmen. Particularly a tubular writing pen having superposed inner and outer ink pressure equalization chambers defined in the cylindrical pen body. A removable outer sleeve complementally engages the cylindrical body of the pen, to cover the outer pressure equalization chamber. A locking surface is defined in the removable sleeve rear edge, so that the sleeve may not be removed accidently with consequent ink loss and damage.

REFERENCES:
patent: 915735 (1909-03-01), Brown
patent: 2401167 (1941-11-01), Kovacs
patent: 2951466 (1960-09-01), Bross
patent: 3418058 (1966-07-01), Gossel
patent: 3427116 (1966-05-01), Riepe
patent: 3442597 (1969-05-01), Hebrorn et al.
patent: 3539269 (1969-05-01), Dahle
patent: 3788754 (1974-01-01), Glasa
patent: 3824023 (1974-07-01), Danjczek et al.
patent: 3870421 (1972-12-01), Mutschler
patent: 4102584 (1978-07-01), Anderka

Affiliated with

Also associated with

Rating

Tubular writting pen with superposed pressure equalization chamb does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tubular writting pen with superposed pressure equalization chamb, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tubular writting pen with superposed pressure equalization chamb will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-488642