US3586067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for filling containers
Assignee: SACK FILLERS Ltd
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Filing: 1969-06-05
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Granted: 1971-06-22
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Expires: 1989-06-05
Abstract
Abstract This invention relates to a method and apparatus for densifying or compacting powder in a chamber and then transferring it to a container such as a sack, the method being that the powder is fed to a chamber where it is first subjected to a pressure below ambient pressure and then rapidly increasing the pressure, the increase of pressure may be used to feed the densified powder to the container, the apparatus comprises a chamber having a charging opening, an evacuating and pressurizing connection, and a connection for transferring the treated powder to the container.
Inventors
- 👤 Han-Jorgen Bye-Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:19
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/04; B65B1/18; B65B63/00; B65B63/02; B65B63/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A method of filling a container with densified powder, which includes the steps of: reducing the gas pressure upon a powder in a container to less than atmospheric pressure; thereafter rapidly increasing the pressure upon the powder to a pressure greater than atmospheric pressure whereby the powder is densified; and expelling the densified powder from the chamber, under the influence of said pressure greater than atmospheric pressure, into a container until the container is filled to its capacity, without significant reaeration of the densified powder.
Claim 2
Independent Claim
85 words
A method of filling a container with densified powder, which includes the steps of: reducing the gas pressure upon a powder in a container to less than atmospheric pressure; thereafter rapidly increasing the pressure upon the powder to a pressure greater than atmospheric pressure whereby the powder is densified; and expelling the densified powder from the chamber, under the influence of said pressure greater than atmospheric pressure, into a container until the container is filled to its capacity, without significant reaeration of the densified powder.
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 |