logo

For the Inventor, By the Inventor

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.

Patent No.:

US 9835170 B1

PDFFull Text
Date of Patent:
Dec. 05, 2017

Filed:

Nov. 28, 2012

Vacuum pump with fiber-reinforced resin cylinder

Applicants:

Edwards Japan Limited, Yachiyo-shi, Chiba, JP;

Arisawa Mfg. Co., Ltd., Joetsu-shi, Niigata, JP;

Inventors:

Takashi Kabasawa, Chiba, JP;

Yuichi Kawai, Joetsu, JP;

Masaki Hori, Joetsu, JP;

Takahiro Iiyoshi, Joetsu, JP;

Assignees:

EDWARDS JAPAN LIMITED, Yachiyo-shi, Chiba, JP;

ARISAWA MFG. CO., LTD., Joetsu-shi, Niigata, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Jason Shanske

Assistant Examiner:

Jason T Newton

Int. Cl.
CPC ...
F04D 29/52 (2006.01); F04D 19/04 (2006.01); F04D 29/02 (2006.01);
U.S. Cl.
CPC ...
F04D 29/526 (2013.01); F04D 19/04 (2013.01); F04D 19/044 (2013.01); F04D 29/023 (2013.01); F05D 2230/10 (2013.01); F05D 2300/43 (2013.01); F05D 2300/44 (2013.01); F05D 2300/6034 (2013.01);
Abstract

Provided is a vacuum pump in which the flexing of a rotating cylinder made of a fiber-reinforced resin can be reduced as much as possible to sufficiently reduce the gap between the rotating cylinder and a fixed cylinder, and exhaust performance can thereby be improved to great effect. A vacuum pump comprising a thread groove pump portion equipped with a fixed cylinder portion () having a spiraling thread groove portion () provided in an internal peripheral surface, and a rotating cylinder portion () placed inside the fixed cylinder portion (), the thread groove pump portion exhausting through a spiraling exhaust flow channel due to the rotating cylinder portion () being caused to rotate, and the exhaust flow channel being formed from the thread groove portion () and an external peripheral surface of the rotating cylinder portion (). The rotating cylinder portion () is configured by stacking a plurality of fiber-reinforced resin layers, and the outermost fiber-reinforced resin layer is thicker than the adjacent layer.

Find Patent Forward Citations

Kabasawa, Takashi. (2017). Vacuum pump with fiber-reinforced resin cylinder (U.S. Patent No. 9835170). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9835170

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…