US3253897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat cleaning of fibrous glass fabrics
Assignee: JP Stevens and Co Inc
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Filing: 1962-04-05
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Granted: 1966-05-31
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Expires: 1982-04-05
Abstract
No abstract record available.
Inventors
- 👤 Henry S Falls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
CPC Classifications
D; D06; D06B; D06B3/00; D06B3/10; D06B3/20; C; C03; C03C; C03C25/00; C03C25/002; D06B2700/00; D06B2700/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A CONTINUOUS METHOD OF CLEANING AN ADVANCING FABRIC HAVING WOVEN YARNS FORMED OF INORGANIC FIBERS PROTECTIVELY COATED WITH SIZING MATERIALS COMPRISING THE STEPS OF PREHEATING AIR TO A TEMPERATURE ABOVE 200*F., IMPINGING SAID PREHEATED AIR UPON THE SURFACE OF THE ADVANCING FABRIC TO HAT THE FABRIC TO A TEMPERATURE SUFFICIENT TO VOLATILIZE THE SIZING MATERIAL THEREON, AND WITHDRAWING THE HEATED EXHAUST GASES INCLUDING VOLATILIZATION PRODUCTS FROM SAID FABRIC WITHOUT COMBUSTION AT THE SURFACE THEREOF.
Claim 2
Dependent Claim
74 words
A CONTINUOUS METHOD OF CLEANING AN ADVANCING FABRIC HAVING WOVEN YARNS FORMED OF INORGANIC FIBERS PROTECTIVELY COATED WITH SIZING MATERIALS COMPRISING THE STEPS OF PREHEATING AIR TO A TEMPERATURE ABOVE 200*F., IMPINGING SAID PREHEATED AIR UPON THE SURFACE OF THE ADVANCING FABRIC TO HAT THE FABRIC TO A TEMPERATURE SUFFICIENT TO VOLATILIZE THE SIZING MATERIAL THEREON, AND WITHDRAWING THE HEATED EXHAUST GASES INCLUDING VOLATILIZATION PRODUCTS FROM SAID FABRIC WITHOUT COMBUSTION AT THE SURFACE THEREOF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |