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. 19, 2024

Filed:

Oct. 07, 2021
Applicant:

Enplas Corporation, Saitama, JP;

Inventors:

Koji Noguchi, Saitama, JP;

Shigeru Uemura, Saitama, JP;

Assignee:

Enplas Corporation, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 1/00 (2006.01); B29C 45/26 (2006.01);
U.S. Cl.
CPC ...
F16J 1/005 (2013.01); B29C 45/261 (2013.01);
Abstract

Provided is a plunger including: a plunger body; a first surface configured to come into contact with an inner peripheral surface of the cylindrical member; a second surface disposed on a base end side relative to the first surface, the second surface having an outer diameter that is smaller than that of the first surface; an outer stepped surface disposed between the first surface and the second surface; a first housing disposed in an area at least partly corresponding to the second surface in the recess, the first housing being provided for housing a tip part of the pin; a second housing disposed on the base end side relative to the first housing, the second housing having an inner diameter that is smaller than a largest inner diameter of the first housing; and an inner stepped surface disposed between the first housing and the second housing.


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