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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 9341188 B1

PDFFull Text
Date of Patent:
May. 17, 2016

Filed:

Feb. 07, 2012

Bolt-fastening system for turbomolecular pump, and a pump containing the same

Applicant:

Masahito Kogame, Kyoto, JP;

Inventor:

Masahito Kogame, Kyoto, JP;

Assignee:

SHIMADZU CORPORATION, Kyoto, JP;

Attorneys:

Andrew F. Young, Esq.

Lackenbach Siegel, LLP

Primary Examiner:

Thomas Denion

Assistant Examiner:

Kelsey Stanek

Int. Cl.
CPC ...
F01B 25/16 (2006.01); F04D 19/04 (2006.01); F04D 27/00 (2006.01); F04D 29/64 (2006.01); F04D 29/60 (2006.01);
U.S. Cl.
CPC ...
F04D 19/04 (2013.01); F04D 19/042 (2013.01); F04D 27/008 (2013.01); F04D 29/601 (2013.01); F04D 29/644 (2013.01);
Abstract

A bolt fastening system for a turbomolecular pump wherein a first member is fastened in an axial direction with respect to a second member by multiple bolts arranged concentrically with respect to a rotor shaft center. The bolt-fastening system equipped with multiple pairs of non-penetrating pinholes arranged concentrically with respect to a rotor shaft center and formed opposing one another in respective opposing faces of the fastened first and second members, and equipped with pins provided for each pair of pinholes and inserted into the pairs of pinholes. When the size of a gap between a bolt and a bolt hole formed in the first member is Db, and a sizes of the gaps between the pins and the pinholes formed in the first and second members are Dpand Dp, the gap sizes Db, Dp, and Dpsatisfy the equation Db≧(Dp+Dp).

Find Patent Forward Citations

Kogame, Masahito. (2016). Bolt-fastening system for turbomolecular pump, and a pump containing the same (U.S. Patent No. 9341188). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9341188

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

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