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.:
Date of Patent:
Jun. 28, 2005
Filed:
Dec. 10, 2002
Manabu Nonaka, Narashino, JP;
Takashi Kabasawa, Narashino, JP;
Manabu Nonaka, Narashino, JP;
Takashi Kabasawa, Narashino, JP;
BOC Edwards Technologies, Limited, Narashino, JP;
Abstract
A vacuum pump has a pump case having a gas suction port at an upper part of the pump case and a gas exhaust port at a lower part of the pump case. A stator column extends from a base of the pump case and has an outer circumferential surface. A rotor shaft is rotatably supported in the pump case by the stator column. A spacer is removably integrally connected to the outer circumferential surface of the stator column. The spacer has an outer circumferential surface spaced apart from an inner circumferential surface of the rotor and a through-hole extending form the outer circumferential surface to an inner circumferential surface thereof. A connecting member extends through the through-hole of the spacer and contacts the outer circumferential surface of the stator column to thereby removably integrally connect the spacer to the outer circumferential surface of the stator column.