Patent US3756474A successfully refreshed from Google Patents.
US3756474A
Expired / Lapsed
US
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Compressed air fluid product dispenser with metering chamber
Assignee: Novartis Corp
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Filing: 1971-12-28
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Granted: 1973-09-04
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Expires: 1991-12-28
Abstract
Abstract A compressed air fluid product dispenser has a valve assembly having a valve body with at least a portion thereof in the form of a piston, the valve assembly having a compressed air flow path therethrough. A valve member is movable in the valve body for obturating the compressed air flow path. Aspirating means are provided at one end of the compressed air flow path, the other end of the compressed air flow path opening out of the valve body remote from the aspirating means. The valve body has a metering chamber therein in communication with the aspirating means. A product containing means is provided which forms part of said fluid product dispenser, and a product flow path extends through the valve body from the metering chamber to the product containing means. A closed end cylinder is fitted around at least the piston-shaped portion of the valve body in air tight sliding engagement with the closed end over the end of the compressed air flow path, the cylinder and valve body being movable toward each other in a compression stroke to compress air within the cylinder, either the valve member or the piston having means thereon engagable with the other at the end of the compression stroke for moving the valve member to open the compressed air path only after the air is compressed in the cylinder.
Inventors
- 👤 P Riccio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:33
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/06; B65; B65D; B65D83/00; B65D83/14; B65D83/44; B65D83/52; F; F04; F04B; F04B33/00; F04B39/00; F04B39/0005; F04B39/0016; F04F; F04F5/00; F04F5/54; G; G01; G01F; G01F11/00; G01F11/10; G01F11/26; G01F11/262
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
261 words
A fluid product dispenser comprising a valve assembly having a valve body with one end thereoF in the form of a piston, said valve assembly having a compressed air flow path extending from the one end through the valve body, a valve member movable in the valve body and obturating the compressed air flow path, aspirating means at the end of the compressed air flow path remote from the one end of said valve body, the compressed air flow path at the one end of the valve body opening out of the said one end, said valve body having a metering chamber therein on the opposite side of said aspirating means from said one end and being in communication with said aspirating means, a product containing means forming part of said fluid product dispenser and located on the opposite side of said aspirating means from said metering chamber, a product flow path through said valve body from said metering chamber to said product containing means, and a closed end cylinder fitted around at least the piston-shaped portion of said valve body in air tight sliding engagement with the closed end over the end of the compressed air flow path, the cylinder and valve body being movable toward each other in a compression stroke to compress air within the cylinder, one of said valve member and said piston having means thereon engageable with the other at the end of the compression stroke for moving the valve member to open the compressed air path only after the air is compressed in said cylinder.
Claim 2
Dependent Claim
261 words
A fluid product dispenser comprising a valve assembly having a valve body with one end thereoF in the form of a piston, said valve assembly having a compressed air flow path extending from the one end through the valve body, a valve member movable in the valve body and obturating the compressed air flow path, aspirating means at the end of the compressed air flow path remote from the one end of said valve body, the compressed air flow path at the one end of the valve body opening out of the said one end, said valve body having a metering chamber therein on the opposite side of said aspirating means from said one end and being in communication with said aspirating means, a product containing means forming part of said fluid product dispenser and located on the opposite side of said aspirating means from said metering chamber, a product flow path through said valve body from said metering chamber to said product containing means, and a closed end cylinder fitted around at least the piston-shaped portion of said valve body in air tight sliding engagement with the closed end over the end of the compressed air flow path, the cylinder and valve body being movable toward each other in a compression stroke to compress air within the cylinder, one of said valve member and said piston having means thereon engageable with the other at the end of the compression stroke for moving the valve member to open the compressed air path only after the air is compressed in said cylinder.
Claim 3
Dependent Claim
36 words
A fluid product dispenser as claimed in claim 1 further comprising a product flow control means in said metering chamber for controlling flow of product to said aspirating means only when said aspirating means is aspirating.
Claim 4
Dependent Claim
45 words
A fluid product dispenser as claimed in claim 1 in which said product container is provided around said valve body and is connected to said piston for movement therewith, the engagement of said product container around said valve body being a sliding and sealing engagement.
Claim 5
Dependent Claim
44 words
A fluid product dispenser as claimed in claim 3 in which air return means is provided between said product container and said valve body for admitting air to said product container at the end of each compression stroke of said piston and valve body.
Claim 6
Dependent Claim
52 words
A fluid product dispenser as claimed in claim 3 in which said product container has a collar at the top thereof around said valve body, a sealing ring in sliding sealing engagement between said collar and said valve body, said product flow path opening out of said valve body within said container.
Claim 7
Dependent Claim
103 words
A fluid product dispenser as claimed in claim 5 in which connecting members extend between said collar and said piston, and spaces are provided between said connecting members through which said product flow path opens into said container, said sealing ring being on said valve body and said collar moving relative thereto during said compression stroke, said connecting members and said spaces extending past said sealing ring at the end of said compression stroke to place the interior of said container in communication with the atmosphere through the space between the collar and the valve body at the end of the compression stroke.
Claim 8
Dependent Claim
57 words
A fluid product dispenser as claimed in claim 3 in which said piston has a hollow extension thereon extending away from said valve body, said product container having a bottom extending across the free end of said hollow extension in sealing engagement therewith, and said product container bottom having an aperture therein opening into said hollow extension.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |