US3223443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handling of sheet material
Assignee: PPG Industries Inc
•
Filing: 1963-10-17
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Granted: 1965-12-14
•
Expires: 1983-10-17
Abstract
No abstract record available.
Inventors
- 👤 George W Misson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:44
CPC Classifications
B; B65; B65G; B65G49/00; B65G49/05; B65G49/06; B65G49/061; B65G2249/00; B65G2249/04; B65G2249/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD OF SUPPORTING A SHEET OF GLASS WHICH COMPRISES SUPPLYING AGAS UNDER PRESSURE GREATER THAN AMGLASS AND WITHDRAWING GAS AT A PRESSURE LESS THAN AMBIENT BIENT PRESSURE TO SPACED PRESSURE ZONES ABOVE A SHEET OF PRESSURE FROM EXHAUST ZONES INTERMEDIATE SAID SPACED PRESSURE ZONES AT RATES THAT DIFFERENTIALLY ESTABLISH A PRESSURE ABOVE SAID SHEET OF GLASS OF A MAGNITUDE SUFFICIENTLY LESS THAN AMBIENT PRESSURE TO CAUSE THE WEIGHT OF SAID SHEET TO BE SUPPORT BY THE AMBIENT PRESSURE.
Claim 2
Independent Claim
79 words
A METHOD OF SUPPORTING A SHEET OF GLASS WHICH COMPRISES SUPPLYING AGAS UNDER PRESSURE GREATER THAN AMGLASS AND WITHDRAWING GAS AT A PRESSURE LESS THAN AMBIENT BIENT PRESSURE TO SPACED PRESSURE ZONES ABOVE A SHEET OF PRESSURE FROM EXHAUST ZONES INTERMEDIATE SAID SPACED PRESSURE ZONES AT RATES THAT DIFFERENTIALLY ESTABLISH A PRESSURE ABOVE SAID SHEET OF GLASS OF A MAGNITUDE SUFFICIENTLY LESS THAN AMBIENT PRESSURE TO CAUSE THE WEIGHT OF SAID SHEET TO BE SUPPORT BY THE AMBIENT PRESSURE.
References Cited (Backward Citations)
US2927707A
Cited
GB944175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |