US3119152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for doffing and drafting fibrous webs
Assignee: Johnson and Johnson
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Filing: 1960-02-19
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Granted: 1964-01-28
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Expires: 1980-02-19
Abstract
No abstract record available.
Inventors
- 👤 Kalwaites Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:48
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/02; D01G15/12; D01G15/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
334 words
THE METHOD OF DOFFING A WEB OF FIBERS FROM A ROTATING SURFACE AND SUBSTANTIALLY SIMULTANEOUSLY DRAFTING THE SAME WHICH COMPRISES: (A) CARRYING A WEB OF FIBERS ON A ROTATING SURFACE WITH ENDS OF THE FIBERS PROTRUDING OUTWARDLY BEYOND THE PERIPHERY OF THE ROTATING SURFACE; (B) GRADUALLY GUIDING A MOVING SURFACE MOVABLE IN A CLOSED PATH TOWARD SAID ROTATING SURFACE WHEREBY THE PROTRUDING ENDS OF THE FIBERS CONTACT THE MOVING SURFACE AND PROVIDING A STATIONARY SUPPORT FOR SAID MOVING SURFACE TO CONTROL THE POINT OF CLOSEST PROXIMITY BETWEEN SAID MOVING SURFACE AND SAID ROTATING SURFACE, SAID STATIONARY SUPPORT CONTACTING SAID MOVING SURFACE SUBSTANTIALLY ONLY AT SAID POINT OF CLOSEST PROXIMITY; (C) DRIVING SAID MOVING SURFACE FROM WITHIN SAID CLOSED PATH AT A LINEAR SPEED GREATER THAN THE LINEAR SPEED OF THE ROTATING SURFACE WHEREBY THE ENDS OF THE FIBERS CONTACTING THE MOVING SURFACE ARE GRADUALLY INCLINED FORWARDLY AND DRAWN FORWARDLY IN THE DIRECTION OF MOVEMENT OF THE MOVING SURFACE; (D) GRADUALLY PRESSING THE FIBERS OF SAID WEB AGAINST SAID ROTATING SURFACE OVER AN ARCUATE AREA THEREOF TO FORM A MORE COMPACTED WEB HAVING INCREASED FIBERTO-FIBER COHESION AND CAPABLE OF BEING RESTRAINED MORE POSITIVELY ON THE SURFACE OF SAID ROTATING SURFACE; (E) TRANSFERRING THE LEADING FREE ENDS OF INDIVIDUAL FIBERS OF THE COMPACTED WEB CARRIED BY SAID ROTATING SURFACE TO SAID MOVING SURFACE; (F) GRASPING THE LEADING FREE ENDS OF THE INDIVIDUAL FIBERS CARRIED BY SAID MOVING SURFACE AT A REGION IN CLOSE PROXIMITY TO SAID ROTATING SURFACE; AND (G) DRAWING SAID LEADING FREE ENDS OF THE INDIVIDUAL FIBERS AWAY FROM SAID ROTATING SURFACE AT A LINEAR SPEED GREATER THAN THE LINEAR SPEED OF THE FIBERS ON SAID ROTATING SURFACE, WHILE MAINTAINING SUBSTANTIALLY THE UNIFORMITY OF THE FIBER WEIGHT DISTRIBUTION OF THE FIBROUS WEB AND WHILE RESTRAINING THE TRAILING ENDS OF SAID FIBERS BY SLIDING ENGAGEMENT WITH THE ROTATING SURFACE AND BY SAID INCREASED FIBER-TO-FIBER COHESION, WHEREBY THE INDIVIDUAL FIBERS ARE STRAIGHTENED AND THEIR DEGREE OF ORIENTATION IN THE LONG DIRECTION OF THE WEB IS INCREASED.
Claim 2
Independent Claim
334 words
THE METHOD OF DOFFING A WEB OF FIBERS FROM A ROTATING SURFACE AND SUBSTANTIALLY SIMULTANEOUSLY DRAFTING THE SAME WHICH COMPRISES: (A) CARRYING A WEB OF FIBERS ON A ROTATING SURFACE WITH ENDS OF THE FIBERS PROTRUDING OUTWARDLY BEYOND THE PERIPHERY OF THE ROTATING SURFACE; (B) GRADUALLY GUIDING A MOVING SURFACE MOVABLE IN A CLOSED PATH TOWARD SAID ROTATING SURFACE WHEREBY THE PROTRUDING ENDS OF THE FIBERS CONTACT THE MOVING SURFACE AND PROVIDING A STATIONARY SUPPORT FOR SAID MOVING SURFACE TO CONTROL THE POINT OF CLOSEST PROXIMITY BETWEEN SAID MOVING SURFACE AND SAID ROTATING SURFACE, SAID STATIONARY SUPPORT CONTACTING SAID MOVING SURFACE SUBSTANTIALLY ONLY AT SAID POINT OF CLOSEST PROXIMITY; (C) DRIVING SAID MOVING SURFACE FROM WITHIN SAID CLOSED PATH AT A LINEAR SPEED GREATER THAN THE LINEAR SPEED OF THE ROTATING SURFACE WHEREBY THE ENDS OF THE FIBERS CONTACTING THE MOVING SURFACE ARE GRADUALLY INCLINED FORWARDLY AND DRAWN FORWARDLY IN THE DIRECTION OF MOVEMENT OF THE MOVING SURFACE; (D) GRADUALLY PRESSING THE FIBERS OF SAID WEB AGAINST SAID ROTATING SURFACE OVER AN ARCUATE AREA THEREOF TO FORM A MORE COMPACTED WEB HAVING INCREASED FIBERTO-FIBER COHESION AND CAPABLE OF BEING RESTRAINED MORE POSITIVELY ON THE SURFACE OF SAID ROTATING SURFACE; (E) TRANSFERRING THE LEADING FREE ENDS OF INDIVIDUAL FIBERS OF THE COMPACTED WEB CARRIED BY SAID ROTATING SURFACE TO SAID MOVING SURFACE; (F) GRASPING THE LEADING FREE ENDS OF THE INDIVIDUAL FIBERS CARRIED BY SAID MOVING SURFACE AT A REGION IN CLOSE PROXIMITY TO SAID ROTATING SURFACE; AND (G) DRAWING SAID LEADING FREE ENDS OF THE INDIVIDUAL FIBERS AWAY FROM SAID ROTATING SURFACE AT A LINEAR SPEED GREATER THAN THE LINEAR SPEED OF THE FIBERS ON SAID ROTATING SURFACE, WHILE MAINTAINING SUBSTANTIALLY THE UNIFORMITY OF THE FIBER WEIGHT DISTRIBUTION OF THE FIBROUS WEB AND WHILE RESTRAINING THE TRAILING ENDS OF SAID FIBERS BY SLIDING ENGAGEMENT WITH THE ROTATING SURFACE AND BY SAID INCREASED FIBER-TO-FIBER COHESION, WHEREBY THE INDIVIDUAL FIBERS ARE STRAIGHTENED AND THEIR DEGREE OF ORIENTATION IN THE LONG DIRECTION OF THE WEB IS INCREASED.
Claim 3
Dependent Claim
391 words
APPARATUS FOR DOFFING A WEB OF FIBERS FROM A ROTATABLE SURFACE AND SUBSTANTIALLY SIMULTANEOUSLY DRAFTING THE SAME WHICH COMPRISES: (A) A ROTATABLE CYLINDRICAL SURFACE FOR CARRYING A WEB OF FIBERS WITH ENDS OF THE FIBERS EXTENDING OUTWARDLY BEYOND THE PERIPHERY OF THE ROTATABLE CYLINDRICAL SURFACE; (B) A MOVABLE SURFACE MOVABLE IN A CLOSED PATH ADJACENT SAID ROTATABLE CYLINDRICAL SURFACE; (C) GUIDE MEANS FOR GRADUALLY BRINGING SAID MOVABLE SURFACE INTO A POSITION OF CLOSE PROXIMITY TO SAID ROTATABLE CYLINDRICAL SURFACE WHEREBY THE PROTRUDING ENDS OF THE FIBERS CONTACT THE MOVABLE SURFACE AT A POINT WELL IN ADVANCE OF A HEREINAFTER-MENTIONED PICK-OFF POINT, SAID GUIDE MEANS INCLUDING STATIONARY MEANS CONTACTING SAID MOVABLE SURFACE SUBSTANTIALLY ONLY AT SAID PICK-OFF POINT; (D) MEANS WITHIN SAID CLOSED PATH TO DRIVE SAID MOVABLE SURFACE AT A LINEAR SPEED GREATER THAN THE LINEAR SPEED OF THE ROTATABLE CYLINDRICAL SURFACE WHEREBY THE ENDS OF THE FIBERS CONTACTING THE MOVABLE SURFACE ARE GRADUALLY INCLINED FORWARDLY AND DRAWN FORWARDLY IN THE DIRECTION OF MOVEMENT OF THE MOVABLE SURFACE AS THEY APPROACH THE HEREINAFTER-MENTIONED PICK-OFF POINT, SAID FIBERS BEING GRADUALLY PRESSED BY SAID MOVABLE SURFACE AGAINST AN ARCUATE AREA OF THE ROTATABLE CYLINDRICAL SURFACE TO FORM A MORE COMPACTED WEB THEREON HAVING INCREASED FIBER-TO-FIBER COHESION, SAID MOVABLE SURFACE BEING BROUGHT INTO SUCH CLOSE PROXIMITY TO SAID ROTATABLE CYLINDRICAL SURFACE AS TO PROVIDE FOR FIBER TRANSFER FROM SAID ROTATABLE CYLINDRICAL SURFACE TO SAID MOVABLE SURFACE AT A PICK-OFF POINT WHICH IS THE POINT OF CLOSEST PROXIMITY OF SAID MOVABLE SURFACE TO SAID ROTATABLE CYLINDRICAL SURFACE; AND (E) MEANS COOPERATING WITH SAID MOVABLE SURFACE TO GRASP THE LEADING FREE ENDS OF THE ADVANCING INDIVIDUAL FIBERS OF THE COMPACTED WEB CARRIED ON SAID MOVABLE SURFACE AT A REGION IN CLOSE PROXIMITY TO SAID PICK-OFF POINT, SAID DRIVING MEANS IN DIRECT CONTACT WITH SAID MOVABLE SURFACE DRIVING THE SAME AND DRAWING SAID LEADING FREE ENDS OF THE INDIVIDUAL FIBERS AWAY FROM SAID PICK-OFF POINT WITH A LINEAR SPEED GREATER THAN THE SURFACE LINEAR SPEED OF THE ROTATABLE CYLINDRICAL SURFACE, WHILE MAINTAINING SUBSTANTIALLY THE UNIFORMITY OF THE FIBER WEIGHT DISTRIBUTION OF THE FIBROUS WEB AND WHILE RESTRAINING THE TRAILING ENDS OF SAID FIBERS BY SLIDING ENGAGEMENT WITH SAID ROTATABLE CYLINDRICAL SURFACE AND BY THE INCREASED FIBER-TO-FIBER COHESION, WHEREBY THE INDIVIDUAL FIBERS ARE STRAIGHTENED AND THEIR DEGREE OF ORIENTATION IN THE LONG DIRECTION OF THE WEB IS INCREASED.
Claim 4
Dependent Claim
391 words
APPARATUS FOR DOFFING A WEB OF FIBERS FROM A ROTATABLE SURFACE AND SUBSTANTIALLY SIMULTANEOUSLY DRAFTING THE SAME WHICH COMPRISES: (A) A ROTATABLE CYLINDRICAL SURFACE FOR CARRYING A WEB OF FIBERS WITH ENDS OF THE FIBERS EXTENDING OUTWARDLY BEYOND THE PERIPHERY OF THE ROTATABLE CYLINDRICAL SURFACE; (B) A MOVABLE SURFACE MOVABLE IN A CLOSED PATH ADJACENT SAID ROTATABLE CYLINDRICAL SURFACE; (C) GUIDE MEANS FOR GRADUALLY BRINGING SAID MOVABLE SURFACE INTO A POSITION OF CLOSE PROXIMITY TO SAID ROTATABLE CYLINDRICAL SURFACE WHEREBY THE PROTRUDING ENDS OF THE FIBERS CONTACT THE MOVABLE SURFACE AT A POINT WELL IN ADVANCE OF A HEREINAFTER-MENTIONED PICK-OFF POINT, SAID GUIDE MEANS INCLUDING STATIONARY MEANS CONTACTING SAID MOVABLE SURFACE SUBSTANTIALLY ONLY AT SAID PICK-OFF POINT; (D) MEANS WITHIN SAID CLOSED PATH TO DRIVE SAID MOVABLE SURFACE AT A LINEAR SPEED GREATER THAN THE LINEAR SPEED OF THE ROTATABLE CYLINDRICAL SURFACE WHEREBY THE ENDS OF THE FIBERS CONTACTING THE MOVABLE SURFACE ARE GRADUALLY INCLINED FORWARDLY AND DRAWN FORWARDLY IN THE DIRECTION OF MOVEMENT OF THE MOVABLE SURFACE AS THEY APPROACH THE HEREINAFTER-MENTIONED PICK-OFF POINT, SAID FIBERS BEING GRADUALLY PRESSED BY SAID MOVABLE SURFACE AGAINST AN ARCUATE AREA OF THE ROTATABLE CYLINDRICAL SURFACE TO FORM A MORE COMPACTED WEB THEREON HAVING INCREASED FIBER-TO-FIBER COHESION, SAID MOVABLE SURFACE BEING BROUGHT INTO SUCH CLOSE PROXIMITY TO SAID ROTATABLE CYLINDRICAL SURFACE AS TO PROVIDE FOR FIBER TRANSFER FROM SAID ROTATABLE CYLINDRICAL SURFACE TO SAID MOVABLE SURFACE AT A PICK-OFF POINT WHICH IS THE POINT OF CLOSEST PROXIMITY OF SAID MOVABLE SURFACE TO SAID ROTATABLE CYLINDRICAL SURFACE; AND (E) MEANS COOPERATING WITH SAID MOVABLE SURFACE TO GRASP THE LEADING FREE ENDS OF THE ADVANCING INDIVIDUAL FIBERS OF THE COMPACTED WEB CARRIED ON SAID MOVABLE SURFACE AT A REGION IN CLOSE PROXIMITY TO SAID PICK-OFF POINT, SAID DRIVING MEANS IN DIRECT CONTACT WITH SAID MOVABLE SURFACE DRIVING THE SAME AND DRAWING SAID LEADING FREE ENDS OF THE INDIVIDUAL FIBERS AWAY FROM SAID PICK-OFF POINT WITH A LINEAR SPEED GREATER THAN THE SURFACE LINEAR SPEED OF THE ROTATABLE CYLINDRICAL SURFACE, WHILE MAINTAINING SUBSTANTIALLY THE UNIFORMITY OF THE FIBER WEIGHT DISTRIBUTION OF THE FIBROUS WEB AND WHILE RESTRAINING THE TRAILING ENDS OF SAID FIBERS BY SLIDING ENGAGEMENT WITH SAID ROTATABLE CYLINDRICAL SURFACE AND BY THE INCREASED FIBER-TO-FIBER COHESION, WHEREBY THE INDIVIDUAL FIBERS ARE STRAIGHTENED AND THEIR DEGREE OF ORIENTATION IN THE LONG DIRECTION OF THE WEB IS INCREASED.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |