Rotary expansible chamber devices – Pressure fluid radially balances working or rotating... – Counterbalancing fluid directed to intertooth spaces or...
Patent
1975-03-18
1976-12-07
Husar, C. J.
Rotary expansible chamber devices
Pressure fluid radially balances working or rotating...
Counterbalancing fluid directed to intertooth spaces or...
418126, 418206, F04C 2900
Patent
active
039959759
ABSTRACT:
A gear pump having a drive gear provided with trunions mounted for rotation in the housing of the pump and a driven gear meshing with the drive gear and guided in the housing only on side faces and a portion of the inner peripheral surface of the housing and pressed by fluid pressure against the driven gear. A first sealing member at the outlet of the housing presses the driven gear against a sealing zone of the housing adjacent the inlet thereof and a second sealing member subjected to fluid pressure presses the driven gear against the drive gear. A low pressure zone is arranged at the inner peripheral surface of the housing between the two sealing members, whereas a high pressure zone is arranged between the second sealing member and the sealing zone.
REFERENCES:
patent: 1134357 (1915-04-01), Silvestri
patent: 1783209 (1930-12-01), Wilsey
patent: 2918877 (1959-12-01), Woodcock
patent: 3472170 (1969-10-01), Eckerle
patent: 3838952 (1974-10-01), Futamata
Husar C. J.
Robert Bosch G.m.b.H.
Striker Michael J.
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