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:
Oct. 20, 1987
Filed:
May. 22, 1986
Applicant:
Inventors:
Yoshiharu Namba, Nishishouji, Minoo-shi, Osaka-fu, JP;
Hiroshi Suzuki, Okazaki, JP;
Kazuhiko Sugita, Anjoh, JP;
Assignees:
Toyoda Koki Kabushiki, Kariya, JP;
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
5113 / ; 5116 / ; 409232 ;
Abstract
A spindle stock unit for surface grinding machines includes a spindle head, and a spindle assembly having a spindle body rotatably supported by a pair of axially spaced radial fluid bearings in the spindle head and positioned in place by a pair of axially spaced thrust fluid bearings in the spindle head. To minimize thermal displacement of the spindle assembly in an axial direction, the spindle body is made of crystallized glass of low coefficient of thermal expansion.