Patent US3219072A successfully refreshed from Google Patents.
US3219072A
Expired / Lapsed
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Self-venting spout for bag filling machines
Assignee: Amcor Flexibles North America Inc
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Filing: 1963-02-28
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Granted: 1965-11-23
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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
2026-11-06 18:20
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.
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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 |