Patent US3285308A successfully refreshed from Google Patents.
US3285308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic closure
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1964-02-06
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Granted: 1966-11-15
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Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 George W Stambaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:13
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/46; B; B65; B65D; B65D90/00; B65D90/10; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/205; Y10T292/212
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A PNEUMATIC CLOSURE FOR A SINGLE COMPARTMENT RECEPTACLE HAVING AN UPPER OPENING THEREIN COMPRISING, IN COMBINATION, A FRAME HAVING AN UPWARDLY FACING SEAT SURROUNDING SAID OPENING, A MOVABLE CLOSURE PLATE HAVING A MARGINAL PORTION ADAPTED TO REST ON SAID SEAT TO CLOSE SAID RECEPTACLE, AN INFLATABLE PNEUMATIC BAG CARRIED BY SAID FRAME ADJACENT SAID SEAT AND SURROUNDING THE SEAT FOR SEALING ENGAGING THE PERIPHERAL OF SAID MARGINAL PORTION AT THE PERIPHERALOF SAID SEAT AND FOR ENGAGING THE TOP OF SAID MARGINAL PORTION ABOVE SAID SEAT WHEN INFLATED, SAID BAG HAVING A DEFLATED POSITION WHICH PERMITS MOVEMENT OF SAID CLOSURE PLATE UPWARDLY AWAY FROM SAID SEAT TO OPEN SAID RECEPTACLE, AND MEANS FOR PREVENTING RADIAL OUTWARD MOVEMENT OF SAID INFLATABLE BAG DURING INFLATION THEREOF TO CAUSE THE INFLATED BAG TO MOVE RADIALLY INWARD OVER THE TOP OF SAID MARGINAL PORTION THROUGHOUT THE PERIPHERY OF SAID CLOSURE PLATE TO HOLD THE PLATE IN ITS FULLY CLOSED POSITION WHILE TIGHTLY SEALING SAID OPENING.
Claim 2
Dependent Claim
160 words
A PNEUMATIC CLOSURE FOR A SINGLE COMPARTMENT RECEPTACLE HAVING AN UPPER OPENING THEREIN COMPRISING, IN COMBINATION, A FRAME HAVING AN UPWARDLY FACING SEAT SURROUNDING SAID OPENING, A MOVABLE CLOSURE PLATE HAVING A MARGINAL PORTION ADAPTED TO REST ON SAID SEAT TO CLOSE SAID RECEPTACLE, AN INFLATABLE PNEUMATIC BAG CARRIED BY SAID FRAME ADJACENT SAID SEAT AND SURROUNDING THE SEAT FOR SEALING ENGAGING THE PERIPHERAL OF SAID MARGINAL PORTION AT THE PERIPHERALOF SAID SEAT AND FOR ENGAGING THE TOP OF SAID MARGINAL PORTION ABOVE SAID SEAT WHEN INFLATED, SAID BAG HAVING A DEFLATED POSITION WHICH PERMITS MOVEMENT OF SAID CLOSURE PLATE UPWARDLY AWAY FROM SAID SEAT TO OPEN SAID RECEPTACLE, AND MEANS FOR PREVENTING RADIAL OUTWARD MOVEMENT OF SAID INFLATABLE BAG DURING INFLATION THEREOF TO CAUSE THE INFLATED BAG TO MOVE RADIALLY INWARD OVER THE TOP OF SAID MARGINAL PORTION THROUGHOUT THE PERIPHERY OF SAID CLOSURE PLATE TO HOLD THE PLATE IN ITS FULLY CLOSED POSITION WHILE TIGHTLY SEALING SAID OPENING.
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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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |