Patent US2721144A successfully refreshed from Google Patents.
US2721144A
Expired / Lapsed
US
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Method and apparatus for saturating felt
Assignee: Honeywell International Inc
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Filing: 1952-06-03
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Granted: 1955-10-18
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Expires: 1972-06-03
Abstract
No abstract record available.
Inventors
- 👤 Benjamin S Penley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:55
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/655
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A CONTINUOUS METHOD FOR SATURATING FELT WHICH COMPRISES CONTINUOUSLY PASSING HOT GAS UNDER PRESSURE AGAINST ONE SURFACE AND THROUGH A CONTINUOUSLY MOVING SHEET OF FELT THEREBY HEATING AND EXPELLING ENTRAPPED MOSITURE FROM THE FELT, CONTINUOUSLY PASSING THE THUS HEATED DRY FELT AROUND AN IMPERFORATE CIRCUMFERENTIALLY GROOVED ROTATING CYLINDER, CONTINUOUSLY PASSING HOT LIQUID BITUMINOUS SATURANT UNDER SUPERATMOSPHERIC PRESSURE AGAINST THE OUTER SURFACE OF THE FELT SHEET LYING AGAINST THE GROOVED CYLINDER AND THROUGH THE FELT AND INTO THE GROOVES OF THE CYLINDER THEREBY EXPELLING ENTRAPPED GASES FROM THE FELT AND REPLACING IT WITH SATURANT, CONTINUOUSLY RELEASING EXCESS SATURANT PASSING THROUGH THE FELT VIA THE CHANNELS FORMED BY THE GROOVES INTO AN OVERFLOW PAN HAVING WALLS SURROUNDING THE TOP OF THE IMPERFORATE GROOVED CYLINDER TO RECEIVE AND COLLECT THE RELEASED SATURANT, AND CONTINUOUSLY WITHDRAWING THE SATURATED FELT SHEET FROM THE IMPERFORATE GROOVED CYLINDER.
Claim 2
Dependent Claim
141 words
A CONTINUOUS METHOD FOR SATURATING FELT WHICH COMPRISES CONTINUOUSLY PASSING HOT GAS UNDER PRESSURE AGAINST ONE SURFACE AND THROUGH A CONTINUOUSLY MOVING SHEET OF FELT THEREBY HEATING AND EXPELLING ENTRAPPED MOSITURE FROM THE FELT, CONTINUOUSLY PASSING THE THUS HEATED DRY FELT AROUND AN IMPERFORATE CIRCUMFERENTIALLY GROOVED ROTATING CYLINDER, CONTINUOUSLY PASSING HOT LIQUID BITUMINOUS SATURANT UNDER SUPERATMOSPHERIC PRESSURE AGAINST THE OUTER SURFACE OF THE FELT SHEET LYING AGAINST THE GROOVED CYLINDER AND THROUGH THE FELT AND INTO THE GROOVES OF THE CYLINDER THEREBY EXPELLING ENTRAPPED GASES FROM THE FELT AND REPLACING IT WITH SATURANT, CONTINUOUSLY RELEASING EXCESS SATURANT PASSING THROUGH THE FELT VIA THE CHANNELS FORMED BY THE GROOVES INTO AN OVERFLOW PAN HAVING WALLS SURROUNDING THE TOP OF THE IMPERFORATE GROOVED CYLINDER TO RECEIVE AND COLLECT THE RELEASED SATURANT, AND CONTINUOUSLY WITHDRAWING THE SATURATED FELT SHEET FROM THE IMPERFORATE GROOVED CYLINDER.
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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) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |