US3764046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed air fluid product dispenser
Assignee: Novartis Corp
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Filing: 1971-12-09
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Granted: 1973-10-09
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Expires: 1991-12-09
Abstract
Abstract A fluid product dispenser has an assembly in the form of a piston, the piston having a compressed air flow path therethrough, a valve member movable in the piston and obturating the compressed air flow path, aspirating means at one end of the compressed air flow path, the other end of the compressed air path opening out of the piston remote from said aspirating means, and a product containing means in the device and a product flow path through the device from the product containing means to the aspirating means. A closed end cylinder is fitted around the piston in air tight sliding engagement with the closed end over the end of the compressed air flow path, so that the cylinder and piston are movable toward each other in a compression stroke to compress air within the cylinder. An extension means on either or both the valve member and the closed end of the cylinder engages 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. The piston has a detachable portion which includes the product container and the aspirating means. The device also includes a special product flow control diaphragm with a slit therein, and a special air return means in the form of a gasket held in place over apertures in the closed end of the cylinder by a cylinder return spring.
Inventors
- 👤 P Riccio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:00
CPC Classifications
F; F04; F04B; F04B33/00; B; B05; B05B; B05B11/00; B05B11/01; B05B11/06; F04B39/00; F04B39/0005; F04B39/0016; F04F; F04F5/00; F04F5/54
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
222 words
A dispensing device comprising: an assembly in the form of a piston, said piston having a compressed air flow path therethrough; a valve member movable in said piston and obturating said compressed air flow path; a product container mounting forming part of said piston and being detachably connected thereto; aspirating means in said mounting at one end of said compressed air flow path, the other end of the compressed air flow path opening out of the piston remote from said aspirating means; said product container mounting having a product container means therein and a product flow path therethrough from said product containing means to said aspirating means; a closed end cylinder around and in air tight sliding engagement with said piston and having the closed end around said other end of the compressed air flow path, said piston and said cylinder being relatively movable toward each other in a compression stroke to compress air within said cylinder, air return means at the closed end of said cylinder, and extension means on at least one of said valve member and the closed end of said cylinder and engageable with the other at the end of the compression stroke for moving said valve member relative to said piston for opening said compressed air flow path only after the air in said cylinder is compressed.
Claim 2
Dependent Claim
222 words
A dispensing device comprising: an assembly in the form of a piston, said piston having a compressed air flow path therethrough; a valve member movable in said piston and obturating said compressed air flow path; a product container mounting forming part of said piston and being detachably connected thereto; aspirating means in said mounting at one end of said compressed air flow path, the other end of the compressed air flow path opening out of the piston remote from said aspirating means; said product container mounting having a product container means therein and a product flow path therethrough from said product containing means to said aspirating means; a closed end cylinder around and in air tight sliding engagement with said piston and having the closed end around said other end of the compressed air flow path, said piston and said cylinder being relatively movable toward each other in a compression stroke to compress air within said cylinder, air return means at the closed end of said cylinder, and extension means on at least one of said valve member and the closed end of said cylinder and engageable with the other at the end of the compression stroke for moving said valve member relative to said piston for opening said compressed air flow path only after the air in said cylinder is compressed.
Claim 3
Dependent Claim
21 words
A device as claimed in claim 1 in which said mounting is threadedly connected to the remainder of said valve body.
Claim 4
Dependent Claim
96 words
A device as claimed in claim 1 in which the part of said piston other than said mounting comprises a lower body portion having a recess in the end thereof remote from the mounting into which the compressed air flow path opens, a valve seat member over the end of said recess, and a closed end sleeve over saiD lower body portion holding said valve seat member in place and having fastening means on the open end for detachable engagement with said mounting, said valve member being a poppet valve engageable with said valve seat member.
Claim 5
Dependent Claim
43 words
A device as claimed claim 3 in which sealing means are provided between said mounting and said lower body portion, said compressed air flow path extending through the joint between said lower body and said mounting within the periphery of said sealing means.
Claim 6
Dependent Claim
32 words
A device as claimed in claim 1 in which said mounting has a recess therein and a closure member closing said recess, said recess and closure member defining said product containing means.
Claim 7
Dependent Claim
27 words
A device as claimed in claim 1 in which said product containing means further has product flow control means therein controlling product flow to said aspirating means.
Claim 8
Dependent Claim
67 words
A device as claimed in claim 6 in which said product flow control means is a flexible diaphragm having at least one slit therein, said diaphragm being sufficiently flexible and resilient to be flexed under the aspirating action of said aspirating means to open said slit to pass product therethrough, and to close to prevent product flow therethrough when the aspirating action of aid aspirating means ceases.
Claim 9
Dependent Claim
57 words
A device as claimed in claim 7 in which said product containing means is a recess in said mounting and has a concave end out of which said product flow path opens, said diaphragm being at the wide part of the concave end and flexing into said concave end under the aspirating effect of said aspirating means.
Claim 10
Dependent Claim
75 words
A device as claimed in claim 1 in which said air return means comprises a gasket, said closed end of said cylinder having apertures therein covered by said gasket, said device having spring means between said closed end of said cylinder and said piston urging said cylinder and piston away from each other, said spring means being engaged with said gasket for holding it in air tight engagement over said apertures during said compression stroke.
Claim 11
Dependent Claim
62 words
A device as claimed in claim 9 in which said closed end of said cylinder has said extension means thereon, said gasket being around said extension means, the inside surface of said closed end having an annular groove therein into which said apertures open, and said extension having grooves therein opening out of said annular groove past the edge of said gasket.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |