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US2712171A
Expired / Lapsed
US
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Method of manufacturing wool felt
Assignee: Individual
•
Filing: 1952-05-26
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Granted: 1955-07-05
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Expires: 1972-05-26
Abstract
No abstract record available.
Inventors
- 👤 Hoffman Manfred Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:50
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/04; D04H1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF PRODUCING WOOL FELT COMPRISING THE STEPS OF CONDENSING A BATT CONSISTING OF A PLURALITY OF SUPERIMPOSED WEB OF WOOL FIBERS, OF FEEDING SAID CONDENSED BUT SUBSTANTIALLY UNHARDENED BATT SUCCESSIVELY THROUGH A PLURALITY OF ZONES WHEREIN PRESSURE AND RUBBING ACTION ARE SIMULTANEOUSLY APPLIED TO SAID BATT, OF SUBJECTING SAID BATT TO THE JOINT ACTION OF WATER, STREAM AND A CLEANING FLUID WHILE IN TRANSISTION BETWEEN SAID PLURALITY OF ZONES TO EFFECT SIMULTANEOUSLY HARDENING, FULLING AND CLEANING OF SAID BAT WHEN FED THROUGH SAID PLURALITY OF ZONES, AND OF CONTINUING TO FEED SAID BATT SUCCESSIVELY THROUGH SAID PLURALITY OF ZONES UNTIL SAID BATT IS CONVERTED INTO A SUBSTANTIALLY CLEAN AND UNIFORM LENGTH OF FELT.
Claim 2
Independent Claim
115 words
THE METHOD OF PRODUCING WOOL FELT COMPRISING THE STEPS OF CONDENSING A BATT CONSISTING OF A PLURALITY OF SUPERIMPOSED WEB OF WOOL FIBERS, OF FEEDING SAID CONDENSED BUT SUBSTANTIALLY UNHARDENED BATT SUCCESSIVELY THROUGH A PLURALITY OF ZONES WHEREIN PRESSURE AND RUBBING ACTION ARE SIMULTANEOUSLY APPLIED TO SAID BATT, OF SUBJECTING SAID BATT TO THE JOINT ACTION OF WATER, STREAM AND A CLEANING FLUID WHILE IN TRANSISTION BETWEEN SAID PLURALITY OF ZONES TO EFFECT SIMULTANEOUSLY HARDENING, FULLING AND CLEANING OF SAID BAT WHEN FED THROUGH SAID PLURALITY OF ZONES, AND OF CONTINUING TO FEED SAID BATT SUCCESSIVELY THROUGH SAID PLURALITY OF ZONES UNTIL SAID BATT IS CONVERTED INTO A SUBSTANTIALLY CLEAN AND UNIFORM LENGTH OF FELT.
References Cited (Backward Citations)
US1620957A
Cited
US1589626A
Cited
US2158533A
Cited
US2385873A
Cited
US2441390A
Cited
US2636248A
Cited
US2616152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-04 | 1959-01-03 | 1959-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-04 | 1963-01-03 | 1963-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-04 | 1967-01-03 | 1967-07-05 | $7700.00 | Window Closed / Lapsed |