Patent US3565075A successfully refreshed from Google Patents.
US3606089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Product-isolating sack for pressurized dispensers
Assignee: Valve Corp of America Inc
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Filing: 1969-05-19
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Granted: 1971-09-20
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Expires: 1989-05-19
Abstract
Abstract A VERTICALLY COLLAPSIBLE PRODUCT-ISOLATING SACK HAVING A REDUCED NECK PORTION AT ITS TOP, THROUGH WHICH THE PRODUCE PASSES, AND HAVING BELOW SAID NECK PORTION AN EXTERNALLY GROOVED ANNULAR SHOULDER ADAPTED TO FIT WITHIN THE TOP SHOULDER OF THE DISPENSER CASING AND TO PROVIDE PASSAGES WITHIN THE CASING SHOULDER FOR THE CHARGING OF THE CASING WITH PROPELLANT LIQUID. DURING SAID CHARGING THE ACK NECK IS SUPPORTED ABOVE THE CASING NECK AND IS SPACED RELATION THERETO, AND THE PROPELLANT LIQUID PASSES THROUGH THE EXISTING SPACE BETWEEN THE NECKS AND THROUGH THE GROOVES OF THE SACK SHOULDER, BEING BROUGHT INTO THE CASING.
Inventors
- 👤 Charles D Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:30
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/60; B65D83/62
Claims Analysis
Total Claims: 0
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |