Patent US2846675A successfully refreshed from Google Patents.
Patent US3770206A successfully refreshed from Google Patents.
US3770206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single hand operated sprayer
Assignee: Individual
•
Filing: 1972-11-21
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Granted: 1973-11-06
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Expires: 1992-11-21
Abstract
Abstract A single hand operated sprayer comprising a body including a neck touched by the palm of a user''s hand and a head provided with a hollow cylinder, said cylinder being fitted with a nozzle at that end which faces the user; and a lever gripped by the user''s fingers to cause a piston to slide through the cylinder wherein, when the lever is pulled toward the user the liquid contained in the sprayer is ejected from the nozzle toward the user.
Inventors
- 👤 T Tada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:34
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/34; B05B1/3405; B05B11/00; B05B11/01; B05B11/10; B05B11/1042; B05B11/1052; B05B11/1056; B05B11/1057; B05B11/0005; B05B11/0037; B05B11/0039; B05B11/0044; B05B11/00442; B05B11/1001; B05B11/1009; B05B11/1011
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A single hand operated sprayer comprising a body including a neck touched by the palm of a user''s hand and a head provided with a hollow cylinder, said cylinder being opened at one end and fitted with a nozzle at the other end facing the user; a first passageway for conducting spray liquid into the cylinder; a first check valve for permitting the flow of spray liquid only from the passageway to the cylinder; a piston slidably inserted into the cylinder from said open end; means for urging the piston outward of the cylinder; a lever rockably supported on the spray body and, when gripped by user''s fingers, pulled toward the user to move the piston inward of the cylinder; and a spinner for causing spray liquid to be atomized and ejected through the nozzle upon inward movement of the piston.
Claim 2
Dependent Claim
141 words
A single hand operated sprayer comprising a body including a neck touched by the palm of a user''s hand and a head provided with a hollow cylinder, said cylinder being opened at one end and fitted with a nozzle at the other end facing the user; a first passageway for conducting spray liquid into the cylinder; a first check valve for permitting the flow of spray liquid only from the passageway to the cylinder; a piston slidably inserted into the cylinder from said open end; means for urging the piston outward of the cylinder; a lever rockably supported on the spray body and, when gripped by user''s fingers, pulled toward the user to move the piston inward of the cylinder; and a spinner for causing spray liquid to be atomized and ejected through the nozzle upon inward movement of the piston.
Claim 3
Dependent Claim
98 words
The sprayer according to claim 1, further comprising an abutting member firmly inserted in the cylinder to divide the cylinder into two parts one of which is a compartment defined between the inner end of the abutting member and said other end of the cylinder, said abutting member having a penetrating passage connecting said compartment with the other part of the cylinder, said compartment containing therein said spinner to be pressed onto said inner end of the abutting member to shut fluid communication between the cylinder and the nozzle when the piston is moved outward of the cylinder.
Claim 4
Dependent Claim
61 words
The sprayer according to claim 2 wherein said piston has a piston valve extending from the inner end of the piston into the penetrating passage, the extending end of said piston valve being engaged with the inner peripheral wall of the penetrating passage to prevent spray liquid from leaking through the nozzle when the piston is urged in the outermost position.
Claim 5
Dependent Claim
31 words
The sprayer according to claim 2 wherein the urging means consists of a compression spring arranged between the inner end of the piston and the outer end of the abutting member.
Claim 6
Dependent Claim
33 words
The sprayer according to claim 1, further comprising a contaiNer for holding spray liquid to be fed to said first passageway and means for connecting the container to the neck of the body.
Claim 7
Dependent Claim
87 words
The sprayer according to claim 5 wherein said connecting means includes a first cavity formed at the bottom of the neck, an insert member firmly fitted into said first cavity with the lower part thereof projecting downward of the neck, a tubular connecting protrusion projecting upward from the top of the container with the upper end thereof pressed against the underside of the insert member, and a tightening ring surrounding the connecting protrusion and said lower part of the insert member to securely fix them in place.
Claim 8
Dependent Claim
36 words
The sprayer according to claim 6 wherein said insert member has a saw toothed projection formed on the outer periphery, said projection tightly pressed against the inner wall of the first cavity in a liquidtight condition.
Claim 9
Dependent Claim
16 words
The sprayer according to claim 6, further comprising means for preventing negative pressure within the container.
Claim 10
Dependent Claim
91 words
The sprayer according to claim 8 wherein said means for preventing negative pressure includes a second cavity formed at the bottom of the insert member, a first vent port perforated in the insert member to connect the second cavity to the first cavity, a second vent port made in the neck to provide air communication between atmosphere and the second cavity through the first vent port, and a second check valve held in the second cavity to permit the air flow only through the second vent port into the second cavity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |