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:
Mar. 18, 2008

Filed:

Dec. 22, 2004
Applicants:

Shinsuke Yamamoto, Kariya, JP;

Masaki Akutagawa, Chiryu, JP;

Koichi Sugiyama, Nagoya, JP;

Inventors:

Shinsuke Yamamoto, Kariya, JP;

Masaki Akutagawa, Chiryu, JP;

Koichi Sugiyama, Nagoya, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 51/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A tubular member is arranged radially inward of a coil to cover outer peripheral parts of a movable core and of a stationary core. The stationary core has a tapered portion in an opposing portion, which is opposed to the movable core. The stationary core also has a large diameter portion on a counter movable core side of the tapered portion. An outer diameter of the tapered portion is increased from an opposing end surface side part toward the large diameter portion. The outer diameter of the opposing end surface of the opposing portion, which is opposed to the movable core, is generally the same as an outer diameter of the movable core. An outer diameter of the large diameter portion of the stationary-core is larger than the outer diameter of the movable core.


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