Patent US3762647A successfully refreshed from Google Patents.
US3762647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprayer
Assignee: Individual
•
Filing: 1972-08-24
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Granted: 1973-10-02
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Expires: 1992-08-24
Abstract
Abstract A sprayer comprising a sprayer body having a cylinder, a check valve for permitting only a flow of spray material into the cylinder, a piston reciprocatively inserted in the cylinder, said piston having a passage therethrough, a swirl member positioned in the passage, wherein upon backward movement of the piston the swirl member opens the passage to atomize the material and upon forward movement of the piston the member closes the passage to introduce the material through the check valve into the cylinder.
Inventors
- 👤 T Tada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:08
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/34; B05B1/3405; B05B1/341; B05B1/3421; B05B1/3431; B05B1/3436; B05B11/00; B05B11/0005; B05B11/0037; B05B11/0039; B05B11/0044; B05B11/00442; B05B11/01; B05B11/10; B05B11/1001; B05B11/1009
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
129 words
A sprayer comprising: a sprayer body having a cylinder with an opening at one side; a first check valve for introducing spray material into the cylinder; a piston member slidably inserted in the cylinder from said opening, said piston member having a main passage therethrough; reciprocating means for moving the piston member back and forth in the cylinder; and a swirl member disposed in the main passage to be axially movable to atomize the spray material flowing through the main passage from the cylinder, said swirl member being adapted to open the main passage by increased pressure of the material due to the backward movement of the piston member and to close the passage by reduced pressure in the cylinder due to the forward movement of the piston member.
Claim 2
Dependent Claim
129 words
A sprayer comprising: a sprayer body having a cylinder with an opening at one side; a first check valve for introducing spray material into the cylinder; a piston member slidably inserted in the cylinder from said opening, said piston member having a main passage therethrough; reciprocating means for moving the piston member back and forth in the cylinder; and a swirl member disposed in the main passage to be axially movable to atomize the spray material flowing through the main passage from the cylinder, said swirl member being adapted to open the main passage by increased pressure of the material due to the backward movement of the piston member and to close the passage by reduced pressure in the cylinder due to the forward movement of the piston member.
Claim 3
Dependent Claim
67 words
A sprayer according to claim 1, wherein said swirl member has a polygonal cross section, the edges of the swirl member abutting on the inner surface of the main passage to form a plurality of sub passages between the peripheral surface of the swirl member and the inner surface of the main passage, said sub passages being opened and closed by axial movement of the swirl member.
Claim 4
Dependent Claim
31 words
A sprayer according to claim 2, wherein said swirl member has a recess in the end surface opposite to the cylinder, and grooves extending from the recess to the sub passages.
Claim 5
Dependent Claim
33 words
A sprayer according to claim 1, wherein said reciprocating means includes a lever for moving the piston member backward in cylinder and a spring for urging the piston member forward in the cylinder.
Claim 6
Dependent Claim
26 words
A sprayer according to claim 1, further comprising a piston valve for closing the main passage as the piston member is placed in the foremost position.
Claim 7
Dependent Claim
31 words
A sprayer according to claim 1, further comprising a container for containing the spray material and a second check valve arranged in the container to prevent reduced pressure in the container.
Claim 8
Dependent Claim
16 words
A sprayer according to claim 6, wherein the body and container are integrally formed in one-piece.
Claim 9
Dependent Claim
19 words
A sprayer according to claim 7, wherein the second check valve is disposed on the bottom of the container.
Claim 10
Dependent Claim
59 words
A sprayer according to claim 6, wherein the body has a first neck portion and a recess formed in the neck portion, and the container has a second neck portion inserted in the recess of the first neck portioN, said second neck portion having serrations at its periphery to be frictionally engaged with the inner surface of the recess.
Claim 11
Dependent Claim
21 words
A sprayer according to claim 9, wherein the second check valve is disposed in the recess of the first neck portion.
References Cited (Backward Citations)
US2605142A
Cited
US2921747A
Cited
US3112074A
Cited
US3379381A
Cited
US3627206A
Cited
US3685739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |