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:
May. 05, 1992
Filed:
Dec. 27, 1990
Manfred Herold, Kahl/Main, DE;
Herbert Rebel, Rodgau, DE;
Man Roland Druckmaschinen AG, , DE;
Abstract
A rotating union for supplying compressed air to the end of a journal of a rotating part of a printing press including a rotor disposed on the rotational axis of the journal and a tubular housing disposed in surrounding relation about the rotor. A plurality of ball bearings each having inner and outer bearing races are disposed between the rotor and tubular housing member for defining a plurality of axially spaced annular air chambers corresponding in number to the air supply lines connected to the tubular housing. Sealing discs are disposed adjacent an axial end of the bearings which in response to communication of pressurized air to the annular air chambers sealingly engage the axial ends of the inner and outer bearing races to effect sealing of the annular air chambers. In pressureless operation, the sealing discs are retained by sealing rings.