US3071415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus of producing converging bristle tufts
Assignee: Individual
•
Filing: 1960-07-05
•
Granted: 1963-01-01
•
Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Beck Sigmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:27
CPC Classifications
A; A46; A46D; A46D9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF PRODUCING TUFTS OF BRISTLES FOR POINTED BRUSHES COMPRISING THE STEPS OF MECHANICALLY MOLDING A TUFT OF SUBSTANTIALLY STRAIGHT BRISTLES WHICH ARE STILL IN A MOLDABLE CONDITION INTO THE DESIRED SHAPE, SAID MOLDING BEING EFFECTED BY APPLYING AXIAL PRESSURE TO THE BRISTLES WHILE THE BRISTLE ENDS ARE CONFINED IN A SHAPING ZONE, WHEREBY THE BRISTLES BULGE FREELY BETWEEN THEIR ENDS, AND THEN SUBJECTING SAID MOLDED TUFT TO A HEAT TREATMENT AT A TEMPERATURE OF APPROXIMATELY 100*C.
Claim 2
Independent Claim
78 words
A METHOD OF PRODUCING TUFTS OF BRISTLES FOR POINTED BRUSHES COMPRISING THE STEPS OF MECHANICALLY MOLDING A TUFT OF SUBSTANTIALLY STRAIGHT BRISTLES WHICH ARE STILL IN A MOLDABLE CONDITION INTO THE DESIRED SHAPE, SAID MOLDING BEING EFFECTED BY APPLYING AXIAL PRESSURE TO THE BRISTLES WHILE THE BRISTLE ENDS ARE CONFINED IN A SHAPING ZONE, WHEREBY THE BRISTLES BULGE FREELY BETWEEN THEIR ENDS, AND THEN SUBJECTING SAID MOLDED TUFT TO A HEAT TREATMENT AT A TEMPERATURE OF APPROXIMATELY 100*C.
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |