US3860150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerosol dispenser for fluid products comprising a piston pump assembly for generating compressed air serving as propellant and a product metering device
Assignee: Novartis Corp
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Filing: 1973-12-20
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Granted: 1975-01-14
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Expires: 1993-12-20
Abstract
Abstract An aerosol dispenser for fluid products which comprises a container, A PISTON PUMP ASSEMBLY MOUNTED THEREIN FOR GENERATING COMPRESSED AIR PROPELLANT, A SPRAY NOZZLE FIXEDLY MOUNTED IN THE PISTON, A COMPRESSED AIR FLOW PATH EXTENDING FROM THE PISTON PUMP TO THE SPRAY NOZZLE, A COMPRESSED AIR FLOW CONTROLLING VALVE IN THE FLOW PATH, A PRODUCT FLOW PATH EXTENDING THROUGH THE PISTON SEPARATE FROM THE AIR FLOW PATH WITH A PRODUCT FLOW CONTROL AND A PRODUCT METERING DEVICE MOUNTED THEREIN; AND A CONNECTION EXTENDING FROM THE VALVE THROUGH THE AIR FLOW PATH AND ENGAGING THE PRODUCT FLOW CONTROL, THEREBY OPENING THE PRODUCT FLOW PATH IN CONJUNCTION WITH THE FLOW OF COMPRESSED AIR.
Inventors
- 👤 Christian Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:33
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: 10
Claim 1
Independent Claim
386 words
An aerosol dispenser for fluid products, comprising container means for product to be dispensed, a piston pump separately from the product container and having a piston and a cylinder and an air compression space therein, a spray nozzle in which compressed air flowing therethrough aspirates, and from which it sprays, product in aerosol form, duct means for compressed air flow, extending as a flowpath from said piston pump to said spray nozzle, compressed air flow-controlling vaLve means in said flowpath and comprising a valve member movable in a valve housing and obturating the compressed air flowpath when closed, a product flowpath separate from said compressed air flowpath, product flow control means in said product flowpath, engaging means provided between said compressed air flowcontrolling valve means and said cylinder, which engaging means comprises an abutting part on the inside of the end wall of the compression space in said cylinder and a projection of said valve member extending out of the front face of said piston facing toward said compression space end wall when out of contact with said abutting part, and a product metering device mounted on the said piston adjacent said spray nozzle in said product flowpath; said product flow control means comprising a valve member biassed toward closed position and being provided with abutting means in an open end of said compressed air flow duct in said piston, said valve member comprising contact rod means extending through said air flow duct and engaging said abutting means of said product flow control means and thereby opening the product flowpath, when said abutment means in the piston pump act on the valve body of said compressed air flow-controlling valve means; wherein at least the front end part of said piston extending into said cylinder constitutes the said valve housing of the compressed air flow-controlling valve means, said spray nozzle is fixedly mounted in said piston, and said duct means for compressed air flow extends through the piston, said product flow control means are located between said metering device and said spray nozzle, said product container means comprises a product reservoir surrounding the cylinder of said piston pump and the said product flowpath extends from said reservoir to said metering device through a part of said piston sealingly separated from the air compression space in said cylinder.
Claim 2
Dependent Claim
386 words
An aerosol dispenser for fluid products, comprising container means for product to be dispensed, a piston pump separately from the product container and having a piston and a cylinder and an air compression space therein, a spray nozzle in which compressed air flowing therethrough aspirates, and from which it sprays, product in aerosol form, duct means for compressed air flow, extending as a flowpath from said piston pump to said spray nozzle, compressed air flow-controlling vaLve means in said flowpath and comprising a valve member movable in a valve housing and obturating the compressed air flowpath when closed, a product flowpath separate from said compressed air flowpath, product flow control means in said product flowpath, engaging means provided between said compressed air flowcontrolling valve means and said cylinder, which engaging means comprises an abutting part on the inside of the end wall of the compression space in said cylinder and a projection of said valve member extending out of the front face of said piston facing toward said compression space end wall when out of contact with said abutting part, and a product metering device mounted on the said piston adjacent said spray nozzle in said product flowpath; said product flow control means comprising a valve member biassed toward closed position and being provided with abutting means in an open end of said compressed air flow duct in said piston, said valve member comprising contact rod means extending through said air flow duct and engaging said abutting means of said product flow control means and thereby opening the product flowpath, when said abutment means in the piston pump act on the valve body of said compressed air flow-controlling valve means; wherein at least the front end part of said piston extending into said cylinder constitutes the said valve housing of the compressed air flow-controlling valve means, said spray nozzle is fixedly mounted in said piston, and said duct means for compressed air flow extends through the piston, said product flow control means are located between said metering device and said spray nozzle, said product container means comprises a product reservoir surrounding the cylinder of said piston pump and the said product flowpath extends from said reservoir to said metering device through a part of said piston sealingly separated from the air compression space in said cylinder.
Claim 3
Dependent Claim
68 words
An aerosol dispenser as described in claim 1, in which said metering chamber is disposed on one side of said spray nozzle in the direction of the relative movement of said cylinder about said piston, and said product reservoir is disposed on the opposite side of said spray nozzle, whereby product can be caused to flow from the product container to the metering chamber by inverting the dispenser.
Claim 4
Dependent Claim
67 words
An aerosol dispenser as described in claim 1 in which said product reservoir is provided around said valve housing part of said piston and is connected to said cylinder for movement therewith, said product reservoir bring in free communication with part of the interior of said cylinder separated sealing by from the compression space of the latter, and being in sliding and sealing engagement with said piston.
Claim 5
Dependent Claim
44 words
An aerosol dispenser as described in claim 3 in which air return means is provided between said product reservoir and said valve housing part of said piston for admitting air to said product reservoir at the end of each compression stroke of said piston.
Claim 6
Dependent Claim
69 words
An aerosol dispenser as described in claim 4 in which said product reservoir has a collar part at the top thereof around said valve housing part of said piston and, a sealing ring in sliding sealing engagement between said collar part and said valve housing part, said product flowpath through said piston opening out of said valve housing part within said cylinder interior part in communication with said reservoir.
Claim 7
Dependent Claim
96 words
An aerosol dispenser as described in claim 5 in which said collar part has a hollow interior about said valve housing part of said piston, and at least one vent is provided in the wall of said collar part through which vent said product flow path opens into said reservoir, said collar part moving relative to said sealing ring on said valve housing part during a compression stroke, whereby said vent extends past said sealing ring at the end of said compression stroke to place the interior of said reservoir in communication with the outside atmosphere.
Claim 8
Dependent Claim
37 words
An aerosol dispenser as described in claim 1, wherein said compressed air flow-controlling valve means comprise spring means and a valve seat in said valve housing, said spring means urging said valve member against said valve seat.
Claim 9
Dependent Claim
36 words
An aerosol dispenser as described in claim 1, wherein one way valve means for admitting air into said cylinder compression space during the return stroke of said piston are mounted in the wall of said cylinder.
Claim 10
Dependent Claim
49 words
An aerosol dispenser as described in claim 1, wherein said product flow control means comprise valve seat means engaged by said product valve member when in closed position and elastically deformable membrane means engaging said product valve member and biassing the latter into engagement with said valve seat means.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |