Self-sealing retractable writing instrument

B - Operations – Transporting – 43 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B43K 24/02 (2006.01) B43K 5/17 (2006.01)

Patent

CA 2484081

This invention provides a retractable writing instrument (100) that substantially prevents writing fluid from evaporating through the tip (102) when the tip (102) is in a retracted position to eliminate the need for a cap. Within the writing instrument (100) is an enclosure member (300) that has a vapor chamber (306). In the retracted position, the tip (102) of the writing instrument (100) is within the vapor chamber (306) to substantially seal the tip (102) from ambient air so that writing fluid does not evaporate through the tip (102) The enclosure member (300) has a lip (302) that opens to allow the tip (102) to move forward and extend from the writing instrumen (100) so that writing fluid can be delivered to the writing surface for writing. When the tip (102) is moved back into the retracted position the lip (302) closes to substantially seal the tip (102) from the ambient air. An external compression may be made of a material that is durable so that the lip (302) does not wear out after many cycles of moving the tip (102) between the retracted and protracted positions, such as silicone, butyl rubber, and thermoplastic vulcanizate (TPV) material including butyl rubber cross-linked with polypropylene.

L'invention concerne un instrument d'écriture rétractable à auto-obturation (100) qui empêche sensiblement l'évaporation du liquide d'écriture par l'extrémité (102) lorsque celle-ci (102) est en position rétractée, d'où l'absence de capuchon. L'instrument (100) comporte une enceinte (300) qui renferme une chambre à vapeur (306). En position rétractée, l'extrémité (102) se trouve dans cette chambre (306), assurant sensiblement l'obturation de ladite extrémité (102) vis-à-vis de l'air ambiant, et empêchant donc l'évaporation du liquide d'écriture par l'extrémité (102). L'enceinte (300) comporte une lèvre (302) qui s'ouvre pour que l'extrémité (102) se déplace vers l'avant et s'étende hors de l'instrument (100), moyennant quoi le liquide d'écriture est délivré à la surface d'écriture, aux fins d'écriture. Lorsque l'extrémité (102) se rétracte, la lèvre (302) se ferme sensiblement, isolant l'extrémité (102) de l'air ambiant. On peut réaliser une compression externe en matériau durable, de sorte que la lèvre (302) ne s'use pas après de nombreux cycles de déplacement de l'extrémité (102) entre les positions rétractée et déployée (par exemple, silicone, butylcaoutchouc, et matériau en vulcanisat thermoplastique à butylcaoutchouc réticulé avec du polypropylène).

LandOfFree

Say what you really think

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

Rating

Self-sealing retractable writing instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFCA-PAI-O-1495606

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