The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 11, 2009

Filed:

Dec. 14, 2004
Applicants:

Nobuaki Nagao, Kawasaki, JP;

Akira Ueda, Tokyo, JP;

Inventors:

Nobuaki Nagao, Kawasaki, JP;

Akira Ueda, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 49/06 (2006.01); F04B 49/22 (2006.01); F04B 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

It is intended to prevent ink from leaking through the ink outlet of the ink rail while the printing press is at halt. To achieve this object, a motor control sectionshown in FIG.controls the rotation of a stepping motordriving a plungerand, every time the stepping motoris stopped, the outer circumferenceof the plungerexcept a cut portionblocks at least a discharge port, thereby enabling the pressure ink invading from an intake portinto the main holeof a cylinderto press the plungeragainst the discharge portopening into the inner circumferential face of the main hole.


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