PROTECTIVE MESH FOR VACUUM PUMP AND VACUUM PUMP WITH SAME

Title:

PROTECTIVE MESH FOR VACUUM PUMP AND VACUUM PUMP WITH SAME

Document Type and Number:

WIPO Patent Application WO/2012/070282

Kind Code:

A1

Abstract:

[Problem] A protective mesh is configured in such a manner that the protective mesh is reduced in cost by forming the protective mesh in a single piece having required strength, that the protective mesh can be attached to an affixation groove with sufficiently high strength to prevent the protective mesh from sagging toward the inside of a pump when the air rushes into the pump from the air inlet, thereby preventing the contact of the protective mesh with equipment within the pump, and to prevent the drop of the protective mesh, and that the protective mesh can be easily attached to a portion of the air inlet and can be easily detached therefrom. [Solution] A protective mesh for a vacuum pump, configured in such a manner that the protective mesh (12) is disposed in a stretched manner at a portion of the air inlet (4) by fitting a rim (12a), which is formed at the peripheral edge of the protective mesh (12), into an affixation groove (7), which is formed in the inner periphery of the air inlet (4), and then pressing a retaining ring (8) into the affixation groove (7). Engagement sections (12d) which are engaged with the retaining ring (8) are raised from portions of the rim (12a) so as to be substantially at right angle to the rim (12a).

Inventors:

OKUDERA SATOSHI (JP)
SAKAGUCHI YOSHIYUKI (JP)

Application Number:

PCT/JP2011/067317

Publication Date:

May 31, 2012

Filing Date:

July 28, 2011

Export Citation:

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Assignee:

EDWARDS JAPAN LTD (JP)
OKUDERA SATOSHI (JP)
SAKAGUCHI YOSHIYUKI (JP)

International Classes:

F04D19/04; F04B37/02; F04B37/16; F04C25/02

Domestic Patent References:

WO2008139614A1

2008-11-20

Foreign References:

JP4250353B2	2009-04-08
JP2006299968A	2006-11-02
JPH11247790A	1999-09-14

Other References: