Claims
- 1. A liquid atomizer having a piston adapted to be reciprocally moved within a cylinder to suck up and pressurize a liquid, and a nozzle from which the pressurized liquid is atomized, said atomizer comprising:
- a liquid container containing the liquid to be atomized and having a neck portion formed at its upper end portion,
- a fixed cylinder having an upper large-diameter portion and a lower small-diameter portion, said cylinder being inserted into said container through the opening of said neck portion in such a manner as to extend from said neck portion toward the bottom of said container,
- a supporting member adapted to be fixed to said neck portion so as to make said neck portion hold said cylinder,
- a first piston adapted to be slidingly moved in the large-diameter portion of said cylinder,
- a first conduit pipe extending upwardly from said first piston to make said nozzle and the source in said large-diameter portion communicate with each other,
- a valve including a valve seat formed on said first conduit pipe and a cooperating valve body and adapted to open and close the passage of said first conduit pipe,
- a second piston connected to said valve body and adapted to be slidingly moved in said large-diameter portion of said fixed cylinder, said second piston being of the same diameter as said first piston and cooperating with said first piston in defining therebetween a valve chamber,
- a second conduit pipe connected to the lower end of said second piston and making the space in said small-diameter portion communicate with said valve chamber defined above said second piston,
- a third piston connected to the lower end of said second conduit pipe and adapted to be slidingly moved in said small-diameter portion,
- a spring disposed between said third piston and the lower end of said small-diameter portion and adapted to upwardly bias an operation body which consists of said valve body of said valve, said second piston, said second conduit pipe and said third piston,
- a suction pipe connected to the lower end of said small-diameter portion for sucking up the liquid into a pressurizing chamber defined by said cylinder and said operation body, and
- a check valve interposed between said suction pipe and said small-diameter portion and adapted to allow only the flow of the liquid directed to said pressurizing chamber,
- said second piston being larger than said third piston, whereby when the first piston is depressed, said valve provided on said second piston is opened as a result of the difference in area between said second piston and said third piston.
- 2. A liquid atomizer as claimed in claim 1, wherein said first conduit pipe has a long cylindrical shape, and is provided at its upper end with a valve seat, while the valve body cooperating with said valve seat has an elongated rod-like form and received by the passage in said conduit pipe.
- 3. A liquid atomizer as claimed in claim 1, wherein a rod-like member is fixed to the inside of said small-diameter portion of said cylinder, said rod-like member being adapted to be inserted into said second conduit pipe when said operation body is moved downward.
- 4. A liquid atomizer as claimed in claim 1, wherein a small ventilation port is formed in the wall of said large-diameter portion of said cylinder at an upper portion of said large-diameter portion, so that air may be introduced into said container through the gap between said supporting member and said first conduit pipe and then through said small ventilation port.
- 5. A liquid atomizer as claimed in claim 1, wherein a small port is formed in the wall of said large diameter portion at a lower portion of the latter, so as to smoothen the up and downward movement of said operation body in said cylinder.
Parent Case Info
This is a continuation of Application Ser. No. 871,702, filed Jan. 23, 1978.
US Referenced Citations (5)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2542851 |
Apr 1976 |
DEX |
2310163 |
Dec 1976 |
FRX |
Continuations (1)
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Number |
Date |
Country |
Parent |
871702 |
Jan 1978 |
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