US3832828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evacuation and venting system for vacuum packages and vacuum chamber therefor
Assignee: Standard Packaging Corp
•
Filing: 1973-01-29
•
Granted: 1974-09-03
•
Expires: 1993-01-29
Abstract
Abstract An evacuation and venting system and method for providing vacuum packages utilizing a vacuum chamber having two vacuum channels or ports, located at the side of the vacuum chamber, and a vacuum channel or port, located at the top of the chamber. The side vacuum channels are arranged to provide efficient evacuation of a package disposed in the vacuum chamber to allow the space between the bottom of the package and the top of the package to be evacuated without adversely affecting the sealing bars of the vacuum chamber. The vacuum chamber may be used to vacuum pack liquid-packed foodstuffs by having the top vacuum channel vent or otherwise remove the liquid from the side vacuum channels subsequent to evacuation.
Inventors
- 👤 L Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/02; B65B31/021
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
An apparatus for packaging a material comprising means for providing a first package member defining a material-receiving cavity, means for depositing said material in said materialreceiving cavity, means for providing a second package member, means for partially sealing said first package member to said second package member and for defining an unsealed package portion, means including a first conduit for evacuating said package through said unsealed package portion, means for sealing said unsealed package portion thereby maintaining said package in its evacuated state, and means including a second conduit for venting said first conduit by introducing air into said second conduit.
Claim 2
Independent Claim
101 words
An apparatus for packaging a material comprising means for providing a first package member defining a material-receiving cavity, means for depositing said material in said materialreceiving cavity, means for providing a second package member, means for partially sealing said first package member to said second package member and for defining an unsealed package portion, means including a first conduit for evacuating said package through said unsealed package portion, means for sealing said unsealed package portion thereby maintaining said package in its evacuated state, and means including a second conduit for venting said first conduit by introducing air into said second conduit.
Claim 3
Dependent Claim
43 words
The invention according to claim 1 wherein said means for evacuating said package further includes a vacuum chamber adapted to be connected to a source of vacuum for withdrawing at least the air between said first package member and said second package member.
Claim 4
Dependent Claim
28 words
The invention according to claim 2 wherein said vacuum chamber includes at least two channels adapted to be connected to said first conduit and said second conduit, respectively.
Claim 5
Dependent Claim
67 words
The invention according to claim 3 wherein said second conduit includes valve means for limiting flow of air from said vacuum chamber to said source of vacuum and for permitting flow of air to said vacuum chamber, said first conduit including valve means for permitting flow of air from said vacuum chamber to said source of vacuum and for limiting flow of air to said vacuum chamber.
Claim 6
Dependent Claim
54 words
The invention according to claim 3 wherein said means for venting said vacuum chamber includes means for providing a source of air and said first and second conduits define a venting path from said source of air to said second conduit to said vacuum chamber and from said vacuum chamber to said first conduit.
Claim 7
Dependent Claim
31 words
The invention according to claim 5 wherein said means for evacuating said package includes means for withdrawing air from said vacuum chamber into said first conduit in a first predetermined direction.
Claim 8
Dependent Claim
52 words
The invention according to claim 6 wherein said venting means includes means for introducing air into said vacuum chamber and for causing said air to flow from said vacuum chamber through said first conduit in the same direction as the flow of air in said first conduit during evacuation of said package.
Claim 9
Dependent Claim
20 words
The invention according to claim 7 wherein said first conduit includes means for trapping material withdrawn from said vacuum chamber.
Claim 10
Dependent Claim
37 words
The invention according to claim 8 wherein said means for venting said vacuum chamber includes means for causing the material remaining in said first conduit subsequent to evacuation of said package to move toward said trap means.
Claim 11
Dependent Claim
21 words
The invention according to claim 1 further comprising means for maintaIning said package in proper position relative to said vacuum chamber.
Claim 12
Dependent Claim
25 words
The invention according to claim 10 wherein said means for keeping said package in proper position includes means for applying a vacuum to said package.
Claim 13
Dependent Claim
13 words
The invention according to claim 11 further comprising means for removing said package.
Claim 14
Dependent Claim
22 words
The invention according to claim 12 wherein said means for removing said package includes means for applying air pressure against said package.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |