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US 6,244,829 B1Granted
Liquid forced-feed apparatus
AssigneeTLV Co., Ltd.
InventorHideaki Yumoto
Life of this patent
Estimating the term…
Abstract
A liquid forced-feed apparatus has a built-in float in a hermetic vessel provided with a working fluid inlet port, a working fluid discharge port, a forced-feed liquid inlet port, and a forced-feed liquid discharge port. A snap mechanism which is actuated to operate the working fluid inlet port and the working fluid discharge port with the upward and downward strokes of the float, to thereby force a liquid in the hermetic vessel out through the forced-feed liquid discharge port. A power transmitting shaft for transmitting the upward-and-downward movement of the float to the snap mechanism extends out of the hermetic vessel. The snap mechanism is disposed outside of the hermetic vessel.
Claims33
A liquid forced-feed apparatus comprising:
- a vessel including a working fluid inlet port, a working fluid discharge port, a liquid inlet port, a liquid discharge port;
- a float;
- a power transmitting shaft, the power transmitting shaft extending outside of the vessel, the float connected to the power transmitting shaft;
- and
- a snap mechanism located outside the vessel, the snap mechanism operating a change-over valve, the change-over valve including a working fluid feed valve at the working fluid inlet port and a working fluid discharge valve at the working fluid discharge port, the working fluid feed valve opening the working fluid inlet port and the working fluid discharge valve closing the working fluid discharge port with movement in a first direction of the power transmitting shaft, and the working fluid feed valve closing the working fluid inlet port and the working fluid discharge valve opening the working fluid discharge port with movement in a second direction of the power transmitting shaft.
2 more elements
A snap mechanism comprising:
- a power transmitting shaft, two annular grooves provided on the surface of the power transmitting shaft, an elastic member, and a locking member pressed by the elastic member into one of the grooves of the power transmitting shaft.
A snap mechanism comprising:
- a power transmitting shaft and a reversing plate spring, the reversing plate spring connected at its center to a power transmitting shaft and fixed at its outer edge.
A liquid forced-feed apparatus comprising:
- a vessel including a working fluid inlet port, a working fluid discharge port, a liquid inlet port, a liquid discharge port;
- a float;
- a power transmitting shaft, the float connected to the power transmitting shaft;
- and
- a snap mechanism including two annular grooves provided on the surface of the power transmitting shaft, an elastic member, and a locking member pressed by the elastic member into one of the grooves of the power transmitting shaft, wherein the snap mechanism operates a change-over valve, the change-over valve including a working fluid feed valve at the working fluid inlet port and a working fluid discharge valve at the working fluid discharge port, the working fluid feed valve opening the working fluid inlet port and the working fluid discharge valve closing the working fluid discharge port with movement in a first direction of the power transmitting shaft, and the working fluid feed valve closing the working fluid inlet port and the working fluid discharge valve opening the working fluid discharge port with movement in a second direction of the power transmitting shaft.
2 more elements
A liquid forced-feed apparatus comprising:
- a vessel including a working fluid inlet port, a working fluid discharge port, a liquid inlet port, a liquid discharge port;
- a float;
- a power transmitting shaft, the float connected to the power transmitting shaft;
- and
- a snap mechanism including a reversing plate spring connected at its center to the power transmitting shaft and at its outer edge to the vessel, wherein the snap mechanism operates a change-over valve, the change-over valve including a working fluid feed valve at the working fluid inlet port and a working fluid discharge valve at the working fluid discharge port, the working fluid feed valve opening the working fluid inlet port and the working fluid discharge valve closing the working fluid discharge port with movement in a first direction of the power transmitting shaft, and the working fluid feed valve closing the working fluid inlet port and the working fluid discharge valve opening the working fluid discharge port with movement in a second direction of the power transmitting shaft.
2 more elements
A liquid forced-feed apparatus comprising:
- a vessel including a working fluid inlet port, a working fluid discharge port, a liquid inlet port, a liquid discharge port;
- a float;
- a power transmitting shaft, the float connected to the power transmitting shaft;
- an elastic member disposed between the float and the power transmitting shaft;
- and
- a snap mechanism located outside the vessel and connected to the power transmitting shaft, the snap mechanism operating a change-over valve, the change-over valve including a working fluid feed valve at the working fluid inlet port and a working fluid discharge valve at the working fluid discharge port, the working fluid feed valve opening the working fluid inlet port and the working fluid discharge valve closing the working fluid discharge port with movement in a first direction of the power transmitting shaft, and the working fluid feed valve closing the working fluid inlet port and the working fluid discharge valve opening the working fluid discharge port with movement in a second direction of the power transmitting shaft.
3 more elements
Dependencies are inferred from the claim text.