Rotating union for supplying compressed air to a rotating part o

Details Rotating union for supplying compressed air to a rotating part o Rotating union for supplying compressed air to a rotating part o

1990-12-27

1992-05-05

Nicholson, Eric K.

Pipe joints or couplings

For branched path

Y-type,

384490, 285136, F16L 3904

Patent

active

051101599

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.

REFERENCES:
patent: 2343491 (1944-03-01), Bard et al.
patent: 2458343 (1949-01-01), Carleton
patent: 2768843 (1956-10-01), Zeilman
patent: 3829103 (1974-08-01), Sussman
patent: 3833278 (1974-09-01), Green
patent: 4577892 (1986-03-01), Wrulich et al.
patent: 4928997 (1990-05-01), Reisener et al.
patent: 4938614 (1990-07-01), Imamura et al.

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