Liquid ink writing instrument with a shape memory valve

Coating implements with material supply – Including means to apply material-moving force – Intercommunicable reservoirs or reservoir sections in series

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C401S184000, C401S186000, C401S192000, C401S198000, C401S199000, C401S205000

Reexamination Certificate

active

07048459

ABSTRACT:
The liquid ink writing instrument has a body containing, from its rear end towards its front end, a reservoir for the ink and a front chamber containing a capillary element for transferring ink coming from the reservoir to a writing head. The front chamber communicates with ambient air. The writing head is fed with ink by the capillary element, and projects from the front portion of the body. The reservoir is separated from the front chamber by a flexible wall having shape memory and provided with slots. The flexible wall acts as a valve suitable for opening when the ratio of the pressure inside the reservoir over the pressure inside the volume of the front chamber facing the valve exceeds a first value, and of reclosing instantly as soon as the ratio becomes less than or equal to a second value, the valve releasing the ink in the form of a jet directed towards the rear face of the capillary element. The first value of the ratio of the pressures is preferably about 1.07, and the second value of the ratio is preferably about 1.05. The writing instrument includes means for pressurizing the reservoir.

REFERENCES:
patent: 4973180 (1990-11-01), Hori
patent: 6164858 (2000-12-01), Kaufmann
patent: 0 240 994 (1987-04-01), None
patent: 0 516 538 (1992-05-01), None
patent: 10235273 (1998-02-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Liquid ink writing instrument with a shape memory valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid ink writing instrument with a shape memory valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid ink writing instrument with a shape memory valve will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3538078

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.