US3913797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid dispensing system
Assignee: Baldwin Gegenheimer Corp
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Filing: 1974-02-11
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Granted: 1975-10-21
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Expires: 1994-02-11
Abstract
Abstract For delivery of cleansing liquid to printing rollers, a collapsible chamber is incompletely filled with a liquid which is thereafter delivered directly to spray nozzles by compression of the chamber. Reexpansion of the chamber draws in a new charge of liquid and concurrently withdraws residual liquid from the spray orifices to prevent dripping on the cleaned printing rollers. A two chamber system is disclosed in which a new charge of cleaning liquid is received in and metered by a first chamber for subsequent transfer to the second chamber.
Inventors
- 👤 Stanley J Brym
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:47
CPC Classifications
B; B41; B41F; B41F35/00; B41F35/02; B05; B05B; B05B12/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
191 words
In a press washer, a liquid dispensing system of the type which includes a source of liquid, an orifice through which such liquid is to be projected, and a conduit system extending between said source and said orifice for establishing a liquid-bearing connection between them to convey washing liquid to the press parts to be washed comprising, A. control apparatus to be interposed in the conduit system, such apparatus comprising, 1. a first expansible and collapsible chamber for alternatively a. establishing flow of liquid from the source to the portion of the conduit system which connects with the orifice when said chamber is collapsed, and b. a multi-position valve in the conduit system for interrupting such flow, and 2. a second expansible and collapsible smaller chamber interconnected to said first chamber to operate in opposite expanding or collapsing phase thereto, and being connected to the conduit system through said valve when said valve interrupts flow from said first chamber and effective upon such interruption of flow to establish a negative pressure within the portion of the conduit system which connects with the orifice, thereby to withdraw residual liquid from the orifice.
Claim 2
Dependent Claim
191 words
In a press washer, a liquid dispensing system of the type which includes a source of liquid, an orifice through which such liquid is to be projected, and a conduit system extending between said source and said orifice for establishing a liquid-bearing connection between them to convey washing liquid to the press parts to be washed comprising, A. control apparatus to be interposed in the conduit system, such apparatus comprising, 1. a first expansible and collapsible chamber for alternatively a. establishing flow of liquid from the source to the portion of the conduit system which connects with the orifice when said chamber is collapsed, and b. a multi-position valve in the conduit system for interrupting such flow, and 2. a second expansible and collapsible smaller chamber interconnected to said first chamber to operate in opposite expanding or collapsing phase thereto, and being connected to the conduit system through said valve when said valve interrupts flow from said first chamber and effective upon such interruption of flow to establish a negative pressure within the portion of the conduit system which connects with the orifice, thereby to withdraw residual liquid from the orifice.
Claim 3
Dependent Claim
161 words
multi-position valve means to be interposed between said pressurized liquid source and said chambers, said valve means a. being effective in a first position thereof to permit delivery of pressurized liquid from the source to the smaller of the two chambers, thereby concurrently expanding that chamber and collapsing the larger chamber so as to impel toward the orifice any liquid contained in the larger chamber, and b. being effective in a second position thereof to interconnect said first and second chambers while isolating both chambers from said pressurized fluid source, whereby the concurrent expansion of the larger chamber and contraction of the smaller chamber which occurs under the influence of their normal biases i. transfers from the smaller to the larger of the chambers a metered amount of liquid corresponding to the decrease in volune of the smaller chamber, and ii. produces in the larger chamber a net pressure decrease effective to withdraw residual liquid from the orifice connected to it.
Claim 4
Dependent Claim
161 words
multi-position valve means to be interposed between said pressurized liquid source and said chambers, said valve means a. being effective in a first position thereof to permit delivery of pressurized liquid from the source to the smaller of the two chambers, thereby concurrently expanding that chamber and collapsing the larger chamber so as to impel toward the orifice any liquid contained in the larger chamber, and b. being effective in a second position thereof to interconnect said first and second chambers while isolating both chambers from said pressurized fluid source, whereby the concurrent expansion of the larger chamber and contraction of the smaller chamber which occurs under the influence of their normal biases i. transfers from the smaller to the larger of the chambers a metered amount of liquid corresponding to the decrease in volune of the smaller chamber, and ii. produces in the larger chamber a net pressure decrease effective to withdraw residual liquid from the orifice connected to it.
Claim 5
Dependent Claim
57 words
For use in a liquid dispensing system of the type which includes a source of liquid, an orifice through which such liquid is to be projected, and a conduit system extending between said source and said orifice for establishing a liquid-bearing connecting between them, A. control apparatus to be interposed in the conduit system, such apparatus comprising
Claim 6
Dependent Claim
57 words
For use in a liquid dispensing system of the type which includes a source of liquid, an orifice through which such liquid is to be projected, and a conduit system extending between said source and said orifice for establishing a liquid-bearing connecting between them, A. control apparatus to be interposed in the conduit system, such apparatus comprising
Claim 7
Dependent Claim
72 words
a second expansible and collapsible smaller chamber inter-connected to said first chamber to operate in opposite expanding or collapsing phase thereto, and being connected to the conduit system through said valve when said valve interrupts flow from said first chamber and effective upon such interruption of flow to establish a negative pressure within the portion of the conduit system which connects with the orifice, thereby to withdraw residual liquid from the orifice.
Claim 8
Dependent Claim
72 words
a second expansible and collapsible smaller chamber inter-connected to said first chamber to operate in opposite expanding or collapsing phase thereto, and being connected to the conduit system through said valve when said valve interrupts flow from said first chamber and effective upon such interruption of flow to establish a negative pressure within the portion of the conduit system which connects with the orifice, thereby to withdraw residual liquid from the orifice.
Claim 9
Dependent Claim
53 words
Control apparatus according to claim 2 in which the said means for progressively collapsing the said chamber comprises: A. a second expansible and collapsible chamber which in its expanding phase operates to collapse the first such chamber; and B. control means for admitting to the second chamber pressurized fluid for expanding that chamber.
Claim 10
Dependent Claim
33 words
Control apparatus according to claim 3 in which the first chamber in its expanded condition has an enclosed volume significantly greater than the enclosed volume of the second chamber in its expanded condition.
Claim 11
Dependent Claim
62 words
Control apparatus according to claim 4 which further includes means effective during the collapsing phase of the second chamber to connect that chamber with the interior of the first chamber, whereby liquid which may be introduced into the second chamber during its expanding phase will be transferred as a metered liquid quantity into the first chamber during the second chamber''s collapsing phase.
Claim 12
Dependent Claim
77 words
Control apparatus according to claim 5 which further includes multi-position valve means for alternatively A. admitting liquid from said supply source to said second chamber for expanding it while maintaining that chamber out of connection with said first chamber; and B. terminating admission of liquid to the second chamber to permit its collapse while establishing connection between that chamber and the first chamber, whereby the liquid content of the second chamber is transferred to the first chamber.
Claim 13
Dependent Claim
52 words
For use in a liquid dispensing system of the type which includes a source of pressurized liquid, an orifice to which such liquid is to be supplied, and a conduit system extending between said source and said orifice: A. flow control apparatus to be interposed in the conduit system, such apparatus comprising
Claim 14
Dependent Claim
52 words
For use in a liquid dispensing system of the type which includes a source of pressurized liquid, an orifice to which such liquid is to be supplied, and a conduit system extending between said source and said orifice: A. flow control apparatus to be interposed in the conduit system, such apparatus comprising
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |