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:
Sep. 05, 1978
Filed:
Mar. 30, 1977
Shigenori Ando, Narashino, JP;
Seiko Seiki Kabushiki Kaisha, , JP;
Abstract
A sealing structure for protecting the bearing of a high speed spindle such as a grinding wheel spindle comprises a bearing cover having an opening that receives and closely surrounds the spindle adjacent the bearing. Three annular recesses provided in the opening of the bearing cover open inwardly to the spindle. An annular channel in the bearing cover radially outwardly of the opening is supplied with pressurized lubricating fluid and is connected by angularly spaced passages with the first and third of the annular recesses so as to supply the pressurized lubricating fluid to them, while the second of the recesses located between the other two is provided with exhaust passages so as to carry off the pressurized lubricating fluid together with any chips or other impurities entering between the spindle and the opening in the bearing cover. The annular channel in the bearing cover is also connected with the bearing so as to supply the pressurized lubricating fluid to the bearing.