US3565344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric sprayer
Assignee: Mitsubishi Electric Corp
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Filing: 1968-06-28
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Granted: 1971-02-23
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Expires: 1988-06-28
Abstract
Abstract In an electric sprayer, a valve system is provided in the liquid path between an opening of an electric pump and a jet of a nozzle. The valve system is connected to the on/off switch of the electric pump so as to keep the system closed when the switch is off (i.e., when the sprayer is not in use), to prevent leakage of spraying liquid from the nozzle jet due to the increased pressure within the container when the atmospheric temperature rises or when the sprayer is inverted.
Inventors
- 👤 Hisao Takei
- 👤 Nobumichi Hattori
- 👤 Naoyuki Iwata
- 👤 Seiji Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:06
CPC Classifications
A; A45; A45D; A45D34/00; A45D34/02; B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/08; B05B9/085; B05B9/0855; B05B9/0861; F; F04; F04B; F04B17/00; F04B17/03; F04B17/04; F04B17/042; F04B7/00; F04B7/0042; F04B7/0053; F16; F16K; F16K35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
In an electric sprayer having: an airtight container; an electric pump system for pumping liquid from said container; a switch controlling said pump system; nozzle means having a passage for liquid flow therethrough and including: a jet coupled to said passage through which said liquid is sprayed; and a spinner member provided within said passage; means for providing liquid flow between said pump and said nozzle; and valve means controlled by said switch, said valve means including: a valve rod slidably mounted in said passage; a valve seat mounted in said passage; biasing means interposed between said valve rod and said spinner member for biasing said valve rod against said valve seat on the side of said valve seat adjacent said jet to close said passage, and for biasing said spinner member against said jet; and a valve operating means connected to said switch for moving said valve rod against said biasing means to open said passage when said switch is operated to turn the prayer on.
Claim 2
Dependent Claim
167 words
In an electric sprayer having: an airtight container; an electric pump system for pumping liquid from said container; a switch controlling said pump system; nozzle means having a passage for liquid flow therethrough and including: a jet coupled to said passage through which said liquid is sprayed; and a spinner member provided within said passage; means for providing liquid flow between said pump and said nozzle; and valve means controlled by said switch, said valve means including: a valve rod slidably mounted in said passage; a valve seat mounted in said passage; biasing means interposed between said valve rod and said spinner member for biasing said valve rod against said valve seat on the side of said valve seat adjacent said jet to close said passage, and for biasing said spinner member against said jet; and a valve operating means connected to said switch for moving said valve rod against said biasing means to open said passage when said switch is operated to turn the prayer on.
References Cited (Backward Citations)
US1881963A
Cited
US1953393A
Cited
US2494837A
Cited
US2815984A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |