Patent US3147144A successfully refreshed from Google Patents.
US3147144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for dusting tacky filaments with powder
Assignee: Rohm and Haas Co
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Filing: 1962-05-01
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Granted: 1964-09-01
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Expires: 1982-05-01
Abstract
No abstract record available.
Inventors
- 👤 Kurt E Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:08
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0067; B29C37/0071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
APPARATUS FOR APPLYING POWDERED DUSTING MATERIAL SUCH AS TALC TO REDUCE THE TACKINESS OF FILAMENTS OF LATEX AND SIMILAR MATERIALS COMPRISING A TROUGH FOR RETAINING A PILE OF POWDERED DUSTING MATERIAL THROUGH WHICH THE FILAMENTS TO BE DUSTED ARE PASSED, MEANS FOR AGITATING THE MATERIAL PILE WITHIN SAID TROUGH, A FEED SCREW ROTATABLY MOUNTED TO OVERLIE THE LONGITUDINAL DIMENSION OF SAID TROUGH, A CASING ENCLOSING SAID SCREW AND HAVING OUTLET MEANS DISPOSED ALONG THE LOWER PORTION OF SAID CASING PROVIDING FOR FLOW OF MATERIAL FROM SAID CASING AS MOVED THEREALONG BY ROTATION OF SAID SCREW, MATERIAL SUPPLY MEANS COMMUNICATING WITH THE INNER END OF SAID SCREW TO SUPPLY POWDERED DUSTING MATERIAL TO SAID SCREW, MEANS FOR DRIVING SAID SCREW, A DISTRIBUTOR SLEEVE ENCIRCLING SAID
Claim 2
Dependent Claim
124 words
APPARATUS FOR APPLYING POWDERED DUSTING MATERIAL SUCH AS TALC TO REDUCE THE TACKINESS OF FILAMENTS OF LATEX AND SIMILAR MATERIALS COMPRISING A TROUGH FOR RETAINING A PILE OF POWDERED DUSTING MATERIAL THROUGH WHICH THE FILAMENTS TO BE DUSTED ARE PASSED, MEANS FOR AGITATING THE MATERIAL PILE WITHIN SAID TROUGH, A FEED SCREW ROTATABLY MOUNTED TO OVERLIE THE LONGITUDINAL DIMENSION OF SAID TROUGH, A CASING ENCLOSING SAID SCREW AND HAVING OUTLET MEANS DISPOSED ALONG THE LOWER PORTION OF SAID CASING PROVIDING FOR FLOW OF MATERIAL FROM SAID CASING AS MOVED THEREALONG BY ROTATION OF SAID SCREW, MATERIAL SUPPLY MEANS COMMUNICATING WITH THE INNER END OF SAID SCREW TO SUPPLY POWDERED DUSTING MATERIAL TO SAID SCREW, MEANS FOR DRIVING SAID SCREW, A DISTRIBUTOR SLEEVE ENCIRCLING SAID
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |