Pen adapted to be pressurized
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 4, 2007
Grant Date -
Jun 7, 2007
app pub date -
Nov 27, 2006
filing date -
Dec 5, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
a pen adapted to be pressurized and capable of being manufactured inexpensively, with which ink can be smoothly supplied and an excessive pressurization within an ink accommodating tube and the leakage of ink can be prevented, as well as a pen that can be easily used in a state that a pen tip is directed upwardly. The pen comprises a pressurizing pump mechanism 10 which pressurizes an inside of ink accommodating tube 3 and includes a pressurizing chamber 14 communicating with the inside of the ink accommodating tube, an elastic spherical body 16 disposed to be pushed into the pressurizing chamber, a compression spring 17 that urges the spherical body in a direction to be released from within the pressurizing chamber, and a pressing stem 18 that moves the spherical body against the urging force of the compression spring into the pressurizing chamber in an airtight state.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully