Patent US2496873A successfully refreshed from Google Patents.
US2496873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Felting and shrinking process
Assignee: Neumann-Endler Inc
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Filing: 1946-04-16
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Granted: 1950-02-07
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Expires: 1966-04-16
Abstract
No abstract record available.
Inventors
- 👤 Manfred T Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:02
CPC Classifications
D; D04; D04H; D04H17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOD OF FELTING AND SHRINKING A FIBRE BAT AFTER HARDENING TO FORM THEREOF A FELT BODY WHICH COMPRISES ADVANCING THE BAT WHILE SUBJECTING A SURFACE THEREOF TO OSCILLATING WORKING MOTION RELATIVE TO ITS OTHER SURFACE PARALLEL TO THE PLANE OF THE BAT AND WHILE APPLYING PRESSURE AND WATER TO THE BAT, AND DURING THE PROCESS PROGRESSIVELY INCREASING THE LENGTH OF SAID OSCILLATORY WORKING MOTION, THE AMOUNT OF SAID PRESSURE AND THE TEMPERATURE OF SAID WATER AND PROGRESSIVELY REDUCING THE FREQUENCY OF SAID OSCILLATORY MOTION.
Claim 2
Independent Claim
85 words
THE METHOD OF FELTING AND SHRINKING A FIBRE BAT AFTER HARDENING TO FORM THEREOF A FELT BODY WHICH COMPRISES ADVANCING THE BAT WHILE SUBJECTING A SURFACE THEREOF TO OSCILLATING WORKING MOTION RELATIVE TO ITS OTHER SURFACE PARALLEL TO THE PLANE OF THE BAT AND WHILE APPLYING PRESSURE AND WATER TO THE BAT, AND DURING THE PROCESS PROGRESSIVELY INCREASING THE LENGTH OF SAID OSCILLATORY WORKING MOTION, THE AMOUNT OF SAID PRESSURE AND THE TEMPERATURE OF SAID WATER AND PROGRESSIVELY REDUCING THE FREQUENCY OF SAID OSCILLATORY MOTION.
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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |