US3124828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid impermeable vent
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:42
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/28; A47L13/30; A47L13/31; A47L13/312
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN APPLICATOR DEVICE FOR DISPENSING LIQUIDS WHICH COMPRISES A CONTAINER ADAPTED TO HOLD A LIQUID AND HAVING ONE PERFORATED WALL; AN APPLICATOR PAD COEXTENSIVE WITH SAID PERFORATED WALL AND COMMUNICATING WITH SAID CONTAINER THROUGH SAID PERFORATED WALL; AND A VENT PROVIDED IN AN OPENING IN THE CONTAINER, NORMALLY SUBMERGED IN SAID LIQUID, MAINTAINING A PRESSURE DIFFERENTIAL BETWEEN THE SURROUNDINGS AND THE HEAD SPACE OF THE CONTAINER SUFFICIENT TO OFFSET SUBSTANTIALLY THE EFFECT OF THE LIQUID HEAD IN THE CONTAINER, AND COMPRISING A GAS PERMEABLELIQUID IMPERMEABLE MEMBRANE INTEGRALLY AFFIXED AROUND THE PERIMETER OF SAID OPENING IN SAID CONTAINER.
Claim 2
Dependent Claim
97 words
AN APPLICATOR DEVICE FOR DISPENSING LIQUIDS WHICH COMPRISES A CONTAINER ADAPTED TO HOLD A LIQUID AND HAVING ONE PERFORATED WALL; AN APPLICATOR PAD COEXTENSIVE WITH SAID PERFORATED WALL AND COMMUNICATING WITH SAID CONTAINER THROUGH SAID PERFORATED WALL; AND A VENT PROVIDED IN AN OPENING IN THE CONTAINER, NORMALLY SUBMERGED IN SAID LIQUID, MAINTAINING A PRESSURE DIFFERENTIAL BETWEEN THE SURROUNDINGS AND THE HEAD SPACE OF THE CONTAINER SUFFICIENT TO OFFSET SUBSTANTIALLY THE EFFECT OF THE LIQUID HEAD IN THE CONTAINER, AND COMPRISING A GAS PERMEABLELIQUID IMPERMEABLE MEMBRANE INTEGRALLY AFFIXED AROUND THE PERIMETER OF SAID OPENING IN SAID CONTAINER.
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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) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |