US3289265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spun glass crimper
Assignee: Joseph Bancroft and Sons Co
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Filing: 1963-06-20
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Granted: 1966-12-06
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 James R Hodges
- 👤 John N Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:03
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/022; C03B37/10; C03B37/14; C03B37/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
APPARATUS FOR CRIMPING FILAMENTS WHICH COMPRISES A MEMBER HAVING WALLS FORMING A CONFINED CRIMPING CHAMBER HAVING INLET AND DISCHARGE ENDS, FEED ROLLS MOUNTED AT SAID INLET END AND POSITIONED TO FEED SAID FILAMENTS INTO SAID CHAMBER TO BE FOLDED OVER AND CRIMPED AGAINST THE MASS OF PREVIOUSLY CRIMPED FILAMENTS IN SAID CHAMBER, A MEMBER HAVING WALLS FORMING A SETTING CHAMBER COMMUNICATING WITH THE DISCHARGE END OF SAID CRIMPING CHAMBER AND HAVING A CROSS SECTIONAL AREA SUFFICIENTLY GREATER THAN THAT OF THE CRIMPING CHAMBER SO AS TO CAUSE THE MASS OF PACKED FILAMENTS TO OPEN UP TO REDUCE THE STRAIN AT THE POINTS OF CRIMP AND TO MAKE THE MASS MORE PERVIOUS TO AIR AND HEAT, MEANS HEATING THE SETTING CHAMBER WALLS TO A TEMPERATURE OF ABOUT THE SOFTENING TEMPERATURE OF THE MATERIAL, SAID WALLS BEING ADAPTED TO TRANSFER HEAT BY CONDUCTION TO SAID SETTING CHAMBER FOR HEATING THE FILAMENTS THEREIN TO A SOMEWHAT LOWER TEMPERATURE.
Claim 2
Dependent Claim
155 words
APPARATUS FOR CRIMPING FILAMENTS WHICH COMPRISES A MEMBER HAVING WALLS FORMING A CONFINED CRIMPING CHAMBER HAVING INLET AND DISCHARGE ENDS, FEED ROLLS MOUNTED AT SAID INLET END AND POSITIONED TO FEED SAID FILAMENTS INTO SAID CHAMBER TO BE FOLDED OVER AND CRIMPED AGAINST THE MASS OF PREVIOUSLY CRIMPED FILAMENTS IN SAID CHAMBER, A MEMBER HAVING WALLS FORMING A SETTING CHAMBER COMMUNICATING WITH THE DISCHARGE END OF SAID CRIMPING CHAMBER AND HAVING A CROSS SECTIONAL AREA SUFFICIENTLY GREATER THAN THAT OF THE CRIMPING CHAMBER SO AS TO CAUSE THE MASS OF PACKED FILAMENTS TO OPEN UP TO REDUCE THE STRAIN AT THE POINTS OF CRIMP AND TO MAKE THE MASS MORE PERVIOUS TO AIR AND HEAT, MEANS HEATING THE SETTING CHAMBER WALLS TO A TEMPERATURE OF ABOUT THE SOFTENING TEMPERATURE OF THE MATERIAL, SAID WALLS BEING ADAPTED TO TRANSFER HEAT BY CONDUCTION TO SAID SETTING CHAMBER FOR HEATING THE FILAMENTS THEREIN TO A SOMEWHAT LOWER TEMPERATURE.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |