Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – Responsive to moving member developed fluid force – current...
Reexamination Certificate
2006-10-17
2006-10-17
Kershteyn, Igor (Department: 3745)
Rotary kinetic fluid motors or pumps
With control means responsive to non-cyclic condition...
Responsive to moving member developed fluid force, current...
C415S055100
Reexamination Certificate
active
07121786
ABSTRACT:
A mix-in structure for a gas or the like in a pressurization centrifugal pump, capable of mix-discharging liquid and gas or the like to prevent cavitation and of suppressing gas residence in the pump chamber at the time of operation stoppage or the like. It comprises a drum-like case having a suction port and a delivery port, in which opposedly disposed are a vane wheel radially formed with a plurality of vanes, a pressurization surface formed with a compression chamber opposed to the vane wheel and converging from the suction port toward the vanes, and pressurization section formed with a pressurization partition wall disposed close to the side surfaces of the vanes to prevent leakage of the fluid in the vane chamber, wherein a gas supply device is installed for supplying a gas into the suction port by an increase in the liquid pressure in the delivery port by using a pressurization centrifugal pump for pressurizing the liquid taken in from the suction port in a pump chamber defined by the vane wheel and the pressurization section and delivering it through the delivery port.
REFERENCES:
patent: 3100964 (1963-08-01), Bevers et al.
patent: 6152687 (2000-11-01), Wilhelm et al.
patent: 6527506 (2003-03-01), Pickelman et al.
patent: 6659713 (2003-12-01), Fujii et al.
patent: 58-68000 (1983-05-01), None
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patent: 9-119396 (1997-05-01), None
patent: 10-196580 (1998-07-01), None
patent: 2000-230492 (2000-08-01), None
patent: 2002-089477 (2002-03-01), None
English language Abstract of JP2002-089477.
English language Abstract of JP 2000-230492.
English language Abstract of JP 10-196580.
English language Abstract of JP 9-119396.
Greenblum & Bernstein P.L.C.
Kershteyn Igor
Yonehara Giken Co., Ltd.
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