Patent US3339237A successfully refreshed from Google Patents.
US3339237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for converting tow into sliver
Assignee: Rhodiaceta SA
•
Filing: 1964-07-24
•
Granted: 1967-09-05
•
Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Chezaud Jean Claude
- 👤 Muller Pierre
- 👤 Saint-Genis Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:25
CPC Classifications
D; D01; D01G; D01G1/00; D01G1/06; D01G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
AN APPARATUS FOR CONVERTING TOW INTO SILVER, SAID APPARATUS COMPRISING A PLURALITY OF SETS OF PRE-STRETCHING ROLLERS ARRANGED IN A PROTRUDING FASHION ON EACH SIDE OF THE APPARATUS AND THROUGH WHICH TOW MAY BE PASSED, AT LEAST THREE SETS OF BREAKING ROLLERS ARRANGED IN A PROTRUDING FASHION SUBSEQUENT TO THE PRE-STRETCHING ROLLERS AND THROUGH WHICH THE TOW MAY BE PASSED AFTER PASSING THROUGH THE PRE-STRETCHING ROLLERS, DRIVE MEANS TO DRIVE SAID SETS OF ROLLERS AT PREDETERMINED SURFACE VELOCITIES, A DEVICE FOR REGULATING SAID SURFACE VELOCITIES IN ACCORDANCE WITH THE DESIRED STRETCHING RATE, SAID DEVICE COMPRISING MEANS FOR DETECTING SAID VELOCITIES, MEANS FOR COMPARING THE VELOCITY DETECTING SIGNALS WITH REFERENCE VALUES CORRESPONDING TO THE DESIRED STRETCHING RATES, AND MEANS OPERATIVELY CONNECTED TO SAID DRIVE MEANS FOR ADJUSTING THE VELOCITIES OF AT LEAST ONE SET OF SAID ROLLERS IN RESPONSE TO CHANGE IN VELOCITY OF ANOTHER OF SAID SETS OF ROLLERS TO MAINTAIN THE DESIRED STRETCHING RATE.
Claim 2
Independent Claim
155 words
AN APPARATUS FOR CONVERTING TOW INTO SILVER, SAID APPARATUS COMPRISING A PLURALITY OF SETS OF PRE-STRETCHING ROLLERS ARRANGED IN A PROTRUDING FASHION ON EACH SIDE OF THE APPARATUS AND THROUGH WHICH TOW MAY BE PASSED, AT LEAST THREE SETS OF BREAKING ROLLERS ARRANGED IN A PROTRUDING FASHION SUBSEQUENT TO THE PRE-STRETCHING ROLLERS AND THROUGH WHICH THE TOW MAY BE PASSED AFTER PASSING THROUGH THE PRE-STRETCHING ROLLERS, DRIVE MEANS TO DRIVE SAID SETS OF ROLLERS AT PREDETERMINED SURFACE VELOCITIES, A DEVICE FOR REGULATING SAID SURFACE VELOCITIES IN ACCORDANCE WITH THE DESIRED STRETCHING RATE, SAID DEVICE COMPRISING MEANS FOR DETECTING SAID VELOCITIES, MEANS FOR COMPARING THE VELOCITY DETECTING SIGNALS WITH REFERENCE VALUES CORRESPONDING TO THE DESIRED STRETCHING RATES, AND MEANS OPERATIVELY CONNECTED TO SAID DRIVE MEANS FOR ADJUSTING THE VELOCITIES OF AT LEAST ONE SET OF SAID ROLLERS IN RESPONSE TO CHANGE IN VELOCITY OF ANOTHER OF SAID SETS OF ROLLERS TO MAINTAIN THE DESIRED STRETCHING RATE.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |