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:
Aug. 07, 1990
Filed:
Jul. 13, 1989
Arnold Dassler, Aalen, DE;
Schwaebische Huettenwerke GmbH, Aalen-Wasseralfingen, DE;
Abstract
In a machine tool provided with a spindle head carrier and a spindle head mounted thereon when a drive shaft supported in the spindle head carrier drives a spindle via gears, an oil circulation chamber is provided for lubricating the gears. The chamber is sealed against the stationary part of the spindle head by sealing members, which are charged with compressed air via compressed pressure supply lines, and which direct compressed air to front sealing surfaces of the sealing members cooperating with rotating opposed sealing surfaces. The pressure ratios and the line cross-section are selected so that a sealing gap exists for the seal between the rotating opposed sealing surfaces and the sealing surfaces of the sealing members for contactless sealing.