Patent US3287482A successfully refreshed from Google Patents.
US3287482A
Expired / Lapsed
US
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Parison cutting method and apparatus
Assignee: Union Carbide Corp
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Filing: 1963-02-12
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Granted: 1966-11-22
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Expires: 1983-02-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Wnek
- 👤 Richards Stowe
- 👤 Herbert M Case
- 👤 Bruce G Rook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:23
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/28; B29C49/30; Y; Y10; Y10T; Y10T83/00; Y10T83/485; Y10T83/49
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
IN A MOLDING PROCESS IN WHICH A PARISON IS CONTINOUSLY EXTRUDED FROM A DIE, CUT WITH A CUTTING BLADE FROM SAID DIE AND GRASPED BY LOWERING JAWS FOR LOWERING TO A MOLD THE IMPROVEMENT COMPRISING LOWERING AT LEAST A PORTION OF THE BLADE IN CONCERT WITH SAID JAWS WHILE RESILIENTLY MAINTAINING THE CUTTING EDGE OF SAID BLADE IN CONTACT WITH THE FACE OF SAID DIE THROUGHOUT THE CUTTING OPERATON, MAINTAINING SAID BLADE SUBSTANTIALLY PARALLEL TO THE DIRECTION OF EXTRUSION TO PRESENT A NARROW EDGE TO THE ONCOMING EXTRUDATE AS IT IS CUT AND PROVIDING AN APERTURE IN SAID BLADE BELOW THE CUTTING EDGE OF SUFFICIENT AREA TO ALLOW THE PASSAGE OF SAID PARISON AND THEREBY MINIMIZE THE BLOCKAGE OF SAID DIE DURING SAID CUTTING STEP.
Claim 2
Dependent Claim
125 words
IN A MOLDING PROCESS IN WHICH A PARISON IS CONTINOUSLY EXTRUDED FROM A DIE, CUT WITH A CUTTING BLADE FROM SAID DIE AND GRASPED BY LOWERING JAWS FOR LOWERING TO A MOLD THE IMPROVEMENT COMPRISING LOWERING AT LEAST A PORTION OF THE BLADE IN CONCERT WITH SAID JAWS WHILE RESILIENTLY MAINTAINING THE CUTTING EDGE OF SAID BLADE IN CONTACT WITH THE FACE OF SAID DIE THROUGHOUT THE CUTTING OPERATON, MAINTAINING SAID BLADE SUBSTANTIALLY PARALLEL TO THE DIRECTION OF EXTRUSION TO PRESENT A NARROW EDGE TO THE ONCOMING EXTRUDATE AS IT IS CUT AND PROVIDING AN APERTURE IN SAID BLADE BELOW THE CUTTING EDGE OF SUFFICIENT AREA TO ALLOW THE PASSAGE OF SAID PARISON AND THEREBY MINIMIZE THE BLOCKAGE OF SAID DIE DURING SAID CUTTING STEP.
Claim 3
Dependent Claim
119 words
IN A MOLDING APPARATUS COMPRISING A DIE ADAPTED TO CONTINUOUSLY EXTRUDE A PARISON, A CUTTING BLADE FOR CUTTING SAID PARISON FROM SAID DIE AND LOWERING JAWS FOR GRASPING SAID PARISON AND LOWERING IT TO A MOLD, SAID BLADE BEING MOUNTED TO LOWER IN CONCERT WITH SAID JAWS, THE IMPROVEMENT COMPRISING MEANS FOR RESILIENTLY MAINTAINING THE CUTTING EDGE OF SAID BLADE IN CONTACT WITH THE FACE OF SAID DIE WHILE MOVING SAID BLADE ACROSS THE DIE FACE DURING THE CUTTING OPERATION AND FOR MAINTAINING SAID BLADE SUBSTANTIALLY PARALLEL WITH THE DIRECTION OF EXTRUSION, SAID BLADE HAVING AN APERTURE BELOW THE CUTTING EDGE TO PERMIT PASSAGE OF THE EXTRUDATE THERETHROUGH AND MINIMIZE THE BLOCKAGE OF SAID DIE DURING SAID CUTTING OPERATION.
Claim 4
Dependent Claim
119 words
IN A MOLDING APPARATUS COMPRISING A DIE ADAPTED TO CONTINUOUSLY EXTRUDE A PARISON, A CUTTING BLADE FOR CUTTING SAID PARISON FROM SAID DIE AND LOWERING JAWS FOR GRASPING SAID PARISON AND LOWERING IT TO A MOLD, SAID BLADE BEING MOUNTED TO LOWER IN CONCERT WITH SAID JAWS, THE IMPROVEMENT COMPRISING MEANS FOR RESILIENTLY MAINTAINING THE CUTTING EDGE OF SAID BLADE IN CONTACT WITH THE FACE OF SAID DIE WHILE MOVING SAID BLADE ACROSS THE DIE FACE DURING THE CUTTING OPERATION AND FOR MAINTAINING SAID BLADE SUBSTANTIALLY PARALLEL WITH THE DIRECTION OF EXTRUSION, SAID BLADE HAVING AN APERTURE BELOW THE CUTTING EDGE TO PERMIT PASSAGE OF THE EXTRUDATE THERETHROUGH AND MINIMIZE THE BLOCKAGE OF SAID DIE DURING SAID CUTTING OPERATION.
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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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |