Coating implements with material supply – Including ball – roller or endless-belt tool – Ball
Patent
1994-12-22
2000-06-20
Walczak, David J.
Coating implements with material supply
Including ball, roller or endless-belt tool
Ball
401216, B43K 700
Patent
active
060769874
ABSTRACT:
The present invention provides the ballpoint pen that precludes the possibility of the pipe portion bending at the joint thereof can be provided even if the outer diameter D is small. In the ballpoint pen having a ballpoint pen tip at a front end thereof, the ballpoint pen tip rotatably accommodating a ball at a front end of a pipe made of metal, an outwardly projecting pipe portion having a uniform thickness throughout the length thereof is arranged at a front end of the ballpoint pen tip, and if a length of the pipe portion is L, an outer diameter of the pipe portion is D, a relational expression "L/D.ltoreq.4.0" is satisfied.
REFERENCES:
patent: 3418057 (1968-12-01), Shea
patent: 4139313 (1979-02-01), Hori
patent: 4251164 (1981-02-01), Nakagawa et al.
patent: 4311403 (1982-01-01), Liguori
patent: 4457644 (1984-07-01), Yokosuka
patent: 4842433 (1989-06-01), Otsuka
Andoh Masashi
Okawara Yoshiaki
Sekine Nobuo
Yokosuka Takehiko
The Pilot Ink Co., Ltd.
Walczak David J.
LandOfFree
Ballpoint pen and cap therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ballpoint pen and cap therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ballpoint pen and cap therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1846533