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US 6,558,127 B2Granted
Fluid discharge device and fluid discharge method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTeruo Maruyama, Takashi Sonoda
Life of this patent
Estimating the term…
Abstract
The fluid discharge device includes an axial drive device for giving an axial relative displacement to between a piston and a cylinder, a device for giving rotary motion, and a device for pressure feed of fluid. The ON/OFF control of discharge flow rate can be fulfilled by changing the fluid resistance of the discharge passage with the axial drive device.
Claims16
A fluid discharge device comprising:
- a housing having an fluid inlet port and a fluid discharge port dedicated for discharging a fluid;
- a shaft disposed in the housing such that a pump chamber is defined by the shaft and the housing, wherein the fluid inlet port and the fluid discharge port are communicated with the pump chamber;
- a device for relatively rotating the shaft and the housing;
- an axial drive device for shifting the shaft with respect to the housing in an axial direction of the shaft to effect an axial displacement thereof;
- and
- a device for pressure-feeding the fluid that has flowed into the pump chamber toward a discharge port side of the housing.
3 more elements
A fluid discharge device comprising:
- a housing having a fluid inlet port;
- a shaft disposed in the housing such that a pump chamber is defined between an outer peripheral surface of the shaft and an inner peripheral surface of the housing, wherein the fluid inlet port opens into the pump chamber;
- a discharge nozzle connected to an end of the housing member, the discharge nozzle having a discharge hole that is in communication with the pump chamber;
- a device for rotating the shaft relative to the housing;
- and
- an axial drive device for shifting the shaft with respect to the housing in an axial direction of the shaft to effect an axial displacement thereof, wherein the shaft can be concurrently rotated and axially displaced, and
- wherein the shaft has a groove formed in an outer peripheral surface thereof so that, when the shaft is rotated relative to the housing, a volume of the fluid is pressure-fed from the pump chamber toward the discharge nozzle.
4 more elements
Dependencies are inferred from the claim text.