A ball-point pen

Details A ball-point pen A ball-point pen

B - Operations, Transporting

43

K

B43K 7/02 (2006.01) B43K 1/08 (2006.01) B43K 5/18 (2006.01) B43K 23/12 (2006.01)

Patent

CA 2153589

A ball-point pen capable of preventing backflow which is liable to occur during writing with the ball-point upward. The ball-point pen (1) comprises a tip (15), of which an end protrudes from a cap (7) with a ball-point pen refill (3) rotatably holding at the front end thereof a small ball (13) for writing by caulking, an ink storage tube (17), in which ink is filled for supplying of ink to the tip, and a joint (19) which connects the ink storage tube to the tip to permit ink to be fed from the ink storage tube to the tip. Formed on the joint are a tip side hole (37a) and an ink storage tube side hole (33a) which permit ink to pass therethrough when the joint is fitted into the tip and the ink storage tube, respectively. The tip side hole and the ink storage tube side hole communicate to each other through a connection hole (45) which comprises a large diameter portion (45b) and a small diameter portion (45s) adapted to connect to the tip side hole and the ink storage tube side hole, respectively, and is eccentric with respect to the both holes. A large ball (49) having a larger diameter (1s) of the small diameter portion is movably disposed in at least a portion (47) of a space which is formed between a rear end of the tip and the large diameter portion when the tip is fitted in the tip side hole.

Stylo à bille (1) empêchant le reflux de l'encre pouvant se produire lorsque la pointe est en l'air et comprenant: une pointe (15) dont l'extrémité dépasse d'un capuchon (7); une recharge (3) comportant, fixée pivotante à son extrémité distale, une bille (13) d'écriture; un tube (17) rempli de l'encre destinée à alimenter la pointe; et un raccord reliant le tube d'encre à la pointe. Le raccord est traversé par un passage côté pointe (37a) et un passage côté tube (33a) par où passe l'encre lorsque le raccord est en place entre la pointe et le tube. Ces deux passages communiquent par un canal (45) excentré par rapport aux axes des passages et comportant une portion large (45b) et une portion étroite (45s). Une grosse bille (49) d'un diamètre supérieur au diamètre (1s) de la portion étroite est mobile à l'intérieur d'au moins une portion (47) de l'espace formé entre l' extrémité arrière de la pointe (lorsque celle-ci est fixée au raccord) et la portion de diamètre large.

Affiliated with

Also associated with

Rating

A ball-point pen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A ball-point pen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A ball-point pen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1737588