US3586066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of filling flexible containers
Assignee: Individual
•
Filing: 1969-05-09
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Granted: 1971-06-22
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Expires: 1989-05-09
Abstract
Abstract This disclosure relates to the filling of flexible containers with a finely divided material utilizing a filler providing a pressure differential including a vacuum in excess of that which effects a prohibited collapsing of the containers. A flexible container is sealed relative to the filler and the material is initially directed into the container under pressure to provide for an initial pressurization of the container, followed by the application of a vacuum to the container so as to permit the compact filling of the container without the collapsing of the container.
Inventors
- 👤 Charles E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:03
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/20; B65B1/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A method of filling flexible containers with a finely divided material utilizing a filler providing a pressure differential including a vacuum in excess of that which effects a prohibited collapsing of the containers, said method comprising the steps of connecting a container to the filler in sealed relation to a discharge portion thereof, applying an above atmospheric gaseous pressure to the material to be placed in the container and pressure filling the container until the container is partially filled and is internally pressurized, and then while continuing to apply said above atmospheric gaseous pressure applying said vacuum to the interior of the container to accelerate filling and remove gases from the material entering the container.
Claim 2
Independent Claim
115 words
A method of filling flexible containers with a finely divided material utilizing a filler providing a pressure differential including a vacuum in excess of that which effects a prohibited collapsing of the containers, said method comprising the steps of connecting a container to the filler in sealed relation to a discharge portion thereof, applying an above atmospheric gaseous pressure to the material to be placed in the container and pressure filling the container until the container is partially filled and is internally pressurized, and then while continuing to apply said above atmospheric gaseous pressure applying said vacuum to the interior of the container to accelerate filling and remove gases from the material entering the container.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein the application of gaseous pressure is terminated at least at the time of termination of the vacuum.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein termination of the vacuum occurs after the filling of the container.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein the application of gaseous pressure is terminated prior to the termination of the vacuum.
Claim 6
Dependent Claim
34 words
The method of claim 1 wherein the material to be placed within The container is disposed in a porous wall magazine and the gaseous pressure is applied to the material through the magazine wall.
Claim 7
Dependent Claim
21 words
The method of claim 1 wherein the gaseous pressure is at least as great as the vacuum to balance the vacuum.
Claim 8
Dependent Claim
21 words
The method of claim 1 wherein the gaseous pressure is on the order of 15 to 20 p.s.i. above atmospheric pressure.
Claim 9
Dependent Claim
35 words
The method of claim 1 wherein the gaseous pressure is on the order of 15 to 20 p.s.i. above atmospheric pressure and the vacuum is on the order of 15 to 28 inches of mercury.
Claim 10
Dependent Claim
40 words
The method of claim 1 wherein the container is a paperboard container and the pressure applied within the container is sufficient to stretch the container to a uniform size notwithstanding variations in size thereof due to variations in moisture content.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |