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:
Dec. 05, 1995
Filed:
Nov. 30, 1993
Applicant:
Inventors:
Naoto Yumiki, Hirakata, JP;
Hironori Honsho, Neyagawa, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
29596 ; 29603 ; 2989807 ; 2989808 ; 310 42 ; 310 90 ;
Abstract
When detaching or attaching a rotary cylinder in a rotary cylinder device having a hydrodynamic bearing, a gap is formed between the end surface of a shaft and a thrust plate and this gap is maintained by inserting an insertion member between opposing surfaces of stronger parts of the device. In this state, the rotary cylinder is removed from or assembled to the device. Accordingly, the force required to remove or fix the cylinder from or to the device acts on the stronger parts of the device and is thus not transmitted to the thrust plate and end surface of the shaft.