US3219072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-venting spout for bag filling machines
Assignee: Amcor Flexibles North America Inc
•
Filing: 1963-02-28
•
Granted: 1965-11-23
•
Expires: 1983-02-28
Abstract
No abstract record available.
Inventors
- 👤 Erwin M Lau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:51
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/04; B65B1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A SELF VENTING SPOUT FOR A BAG FILLING MACHINE COMPRISING AN OUTER SHELL ADAPTED FOR COOPERATION WITH A BAG TO BE FILLED, MEANS PROVIDING A VENT CHAMBER LOCATED WITHIN SAID SHELL, SAID VENT CHAMBER PROVIDING MEANS INCLUDING A FILTER ELEMENT EXTENDING LONGITUDINALLY OF SAID SHELL, CONDUIT MEANS PROVIDING COMMUNICATION BETWEEN SAID VENT CHAMBER AND THE ATMOSPHERE, A JET TUBE LOCATED IN SAID CONDUIT MEANS TO REDUCE THE PRESSURE WITHIN SAID VENT CHAMBER BELOW ATMOSPHERIC PRESSURE, SAID AIR SUPPLY MEANS COMMUNICATING WITH SAID JET TUBE.
Claim 2
Dependent Claim
84 words
A SELF VENTING SPOUT FOR A BAG FILLING MACHINE COMPRISING AN OUTER SHELL ADAPTED FOR COOPERATION WITH A BAG TO BE FILLED, MEANS PROVIDING A VENT CHAMBER LOCATED WITHIN SAID SHELL, SAID VENT CHAMBER PROVIDING MEANS INCLUDING A FILTER ELEMENT EXTENDING LONGITUDINALLY OF SAID SHELL, CONDUIT MEANS PROVIDING COMMUNICATION BETWEEN SAID VENT CHAMBER AND THE ATMOSPHERE, A JET TUBE LOCATED IN SAID CONDUIT MEANS TO REDUCE THE PRESSURE WITHIN SAID VENT CHAMBER BELOW ATMOSPHERIC PRESSURE, SAID AIR SUPPLY MEANS COMMUNICATING WITH SAID JET TUBE.
References Cited (Backward Citations)
US1437876A
Cited
US2032140A
Cited
US2142990A
Cited
US2564969A
Cited
US2770439A
Cited
US2936994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |